journal: 二乗マトリクスの出典を正式タイトルと参照先に分けて書く

略記していたタイトルを各記事の正式タイトルに直し、著者・掲載先・日付と URL を分けた。
ikeji 2019 の記事名は「キーボードの回路」ではなく「キーボードのマトリクス方式の分類」だった。

Journal: journal/2026-10-29-square-matrix.md

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WRs1RXxQe5ZgZFoSsXppV5

.markdownlint.jsonc

@@ -0,0 +1,4 @@
+// VS Codeのユーザー設定(markdownlint.config)と同じ規則にそろえる
+{
+  "MD007": { "indent": 4 }
+}

.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+  "[markdown]": {
+    "editor.detectIndentation": false,
+    "editor.tabSize": 4,
+    "editor.insertSpaces": true
+  }
+}

CLAUDE.md

@@ -127,6 +127,9 @@ PHY(物理配置) / ELC(電気配線) / IDX(キー識別) / MAP(キーマップ)
 - ドキュメントを更新するときは、上のルール1〜5のどこに属する情報かを判断してから書く。分類に迷うものは書く前に確認する。
 - 調査タスクの結果は、結論だけをメインドキュメントに書き、調査過程は `journal/` に落とす。
 - 既存ドキュメントの記述と食い違う事実を見つけたら、勝手に上書きせず指摘する。
+- Markdownをコミットする前に、変更したファイルへ `npx markdownlint-cli2 --fix <files>` をかける。
+    エディタが保存時に同じ修正を入れるため、かけずにコミットするとコミット直後に差分が出る。
+    規則は `.markdownlint.jsonc`。変更していないファイルの指摘は直さない。
 
 ## 未確認事項
 

backlog/README.md

@@ -86,6 +86,15 @@
 - 完了条件: 対象方式の配線と整合する走査方法を確認し、必要な出力設定と対応範囲を定める。
     全方式で走査手順が一意に決まることの証明は求めない。
 
+### ELC-P-4 GPIOに直結したLEDの表し方
+
+- 関連仕様: [ELCレイヤー](../ELCレイヤー.md)「LEDの識別番号」
+- 未決事項: インジケータなど、チェーンに入らずマイコンのピンで直接点灯するLEDをELCにどう持つか。
+    LEDの部品ノードとピンの対応だけで足りるか、極性(ピン側がアノードかカソードか)も要るかを含む。
+- 保留できる理由: チェーン方式(WS2812系)のLEDとキーの配線は、直結LEDと独立に扱える。
+- 再開条件: インジケータLEDの出力に対応するとき、またはLED配線の編集画面の仕様を作るとき。
+- 完了条件: 実在の基板で直結LEDの配線を確認し、ELCでの表し方と、ファームウェア出力に必要な情報を定める。
+
 ## IDX
 
 ### IDX-P-1 単一のorderから既存コミュニティレイアウトの並びを得られる範囲

journal/2026-09-18-editor-base.md

@@ -22,6 +22,7 @@
 ## 検証ログ
 
 ### ijprest/keyboard-layout-editor
+
 - LICENSE.md (ローカル HEAD d2945e5 / 本家 master 2026-09-18 取得、同文)
     - "Copyright(C) 2013-2018 by Ian Prest. All rights reserved."
     - "But it's not permissively licensed!"
@@ -37,10 +38,12 @@
 - ローカルクローン(Documents/Dev/keyboard-layout-editor)の未コミット差分はPNG解像度調整と円形プロファイル追加のみ(ユーザー談)。本件と無関係
 
 ### kle-serial (ijprest)
+
 - MIT, Copyright (c) 2013-2019 Ian Prest。npm @ijprest/kle-serial 0.15.1 (2019-06-30)
 - README: "This library currently only handles deserialization; the serialization code still needs to be ported."
 
 ### kle-serial2 (adamws, ijprest/kle-serial のフォーク)
+
 - MIT。2025-08-22作成、最終push 2026-02-14、star 1
 - serialize あり。書き出しプロパティ: r rx ry x y c t ta g p sm sb st _r_rs a f fa w h w2 h2 x2 y2 l n d
 - 出自の懸念: 元READMEは serialize を「KLE本体から移植予定」としていた。kle-serial2 の serialize 冒頭
@@ -49,6 +52,7 @@
     → 気になるなら書き出しは自前で書く(畳み込み後の絶対座標 → KLE行形式。rx/ry選択は PHY P-1 と一体)
 
 ### adamws/kle-ng
+
 - MIT, Copyright (c) 2025 adamws。Vue 3 + Pinia + TS + Vite, bootstrap 5, three.js, ergogen, makerjs
 - 最終コミット 9eb350f 2026-09-03 (0.48.0)。star 267
 - 規模: TypeScript 2.97MB + Vue 0.99MB (GitHub languages API, テスト込み)
@@ -60,6 +64,7 @@
 - ijprest のコードから派生したかは README に記載なし。未確認
 
 ### その他
+
 - ymkn/keyboard-layout-studio: MIT, Vue3, SVG, KLE import, QMK keyboard.json / Vial 出力, matrix割り当て。star 4, 21 commits。回転・グループの記載なし
 - ローカル Documents/Dev/kbd-editor: Nuxt3 + Pinia, 2025-07, 約2,500行 (deserializer.ts, Key.vue, KeyPropEditor.vue 等)。ユーザーが以前自作を試みたもの。うまくいかなかった記憶あり(ユーザー談)。中身の確認は保留
 

journal/2026-09-21-idx-necessity.md

@@ -66,10 +66,11 @@ ZMKの matrix transform `map`:
 引数の数え間違いでキーが1つずれるのが定番のバグであることも、この層が手書きである傍証になる。
 
 出典:
-- https://docs.qmk.fm/reference_configurator_support
+
-- https://docs.qmk.fm/reference_info_json
+- <https://docs.qmk.fm/reference_configurator_support>
-- https://zmk.dev/docs/config/layout
+- <https://docs.qmk.fm/reference_info_json>
-- https://github.com/KMKfw/kmk_firmware/blob/main/docs/en/porting_to_kmk.md
+- <https://zmk.dev/docs/config/layout>
+- <https://github.com/KMKfw/kmk_firmware/blob/main/docs/en/porting_to_kmk.md>
 
 ## 根拠: マトリクス順 ≠ キー番号順 の実物
 
@@ -96,7 +97,7 @@ QMKの分割も同じ構造。
 > Since the matrix scanning procedure operates on entire rows, it first populates the left half's rows,
 > then the right half's. Thus, the matrix as QMK views it has double the rows instead of double the columns.
 
-出典: https://docs.qmk.fm/features/split_keyboard
+出典: <https://docs.qmk.fm/features/split_keyboard>
 
 ## 保存形式を `order: string[]` にした理由
 

journal/2026-09-22-map-via-workflow.md

@@ -28,16 +28,16 @@ VIA向けのキーボード定義生成と、MAPの割り当ての読み書き
 公式文書・実装を参照した。実機による読み書きの検証は行っていない。
 
 - RemapはWebHIDを使い、QMKのVIAクライアント向け機能へアクセスする。Workbenchにはソース編集・ビルド・書き込みもある。
-  参照: https://github.com/remap-keys/remap#references
+    参照: <https://github.com/remap-keys/remap#references>
-  参照: https://remap-keys.app/docs/workbench
+    参照: <https://remap-keys.app/docs/workbench>
 - VIAのキーボード定義には配置とmatrix座標の対応がある。QMKのVIA実装はキー単位の読み書きにlayer・row・colを使う。
-  参照: https://caniusevia.com/docs/specification/
+    参照: <https://caniusevia.com/docs/specification/>
-  参照: https://github.com/qmk/qmk_firmware/blob/master/quantum/via.c
+    参照: <https://github.com/qmk/qmk_firmware/blob/master/quantum/via.c>
 - Vialではタップダンスやコンボを実機へ保存できるが、枠数等にはビルド時の制約がある。
-  参照: https://get.vial.today/manual/tap-dance.html
+    参照: <https://get.vial.today/manual/tap-dance.html>
-  参照: https://get.vial.today/manual/combos.html
+    参照: <https://get.vial.today/manual/combos.html>
 - ZMK Studioは既存behaviorの割り当てを変更できるが、新しいbehavior定義等は対象外。実機に保存した変更とソース側の設定の扱いにも注意が必要。
-  参照: https://zmk.dev/docs/features/studio
+    参照: <https://zmk.dev/docs/features/studio>
 
 ## 未採用の提案との区別
 

journal/2026-09-23-qmk-dynamic-scope.md

@@ -3,6 +3,7 @@
 ## 結論
 
 当面の対象ファームウェアはQMK。
+
 - Dynamic: QMK本家のVIAプロトコルが公開する項目のみ
 - Static: QMK本家の公式機能のうちVIAで変更できないものは、Firmware Generatorで生成する対象
 - 非公式機能(Vial等のフォーク、XAP等のmaster以外のブランチ)は当面非対応
@@ -29,10 +30,12 @@
 実機での検証はしていない。
 
 ### A. QMK本家 VIA
-参照: https://raw.githubusercontent.com/qmk/qmk_firmware/master/quantum/via.h
+
+参照: <https://raw.githubusercontent.com/qmk/qmk_firmware/master/quantum/via.h>
 VIA_PROTOCOL_VERSION = 0x000D
 
 command:
+
 - 0x01 get_protocol_version
 - 0x02/0x03 get/set_keyboard_value
     - 0x01 uptime(get), 0x02 layout_options(get/set), 0x03 switch_matrix_state(get),
@@ -57,8 +60,9 @@ MAPに関係するもの: キーコード、レイヤー数、エンコーダ、
 照明・オーディオはMAPの所有データ外(MAPレイヤー.md「持たないもの」)。
 
 ### B. Vial(フォーク、今回非対応)
-参照: https://raw.githubusercontent.com/vial-kb/vial-qmk/vial/quantum/vial.h
+
-参照: https://raw.githubusercontent.com/vial-kb/vial-qmk/vial/quantum/qmk_settings.c
+参照: <https://raw.githubusercontent.com/vial-kb/vial-qmk/vial/quantum/vial.h>
+参照: <https://raw.githubusercontent.com/vial-kb/vial-qmk/vial/quantum/qmk_settings.c>
 VIAL_PROTOCOL_VERSION = 6
 
 - keyboard_id、圧縮キーボード定義JSONの取得(get_size/get_def)
@@ -75,7 +79,9 @@ VIAL_PROTOCOL_VERSION = 6
 - VialRGB(RGB Matrixエフェクト列挙・設定)。ソース未確認
 
 ### C. プロトコル外で実機上だけ変わるもの(Dynamicの定義外)
+
 当初「すべてEEPROMに保存される」と書いたが誤り。確認結果:
+
 - 保存されない(再起動で消える): ダイナミックマクロ(docs/features/dynamic_macros.md
     "lost when the keyboard is unplugged or otherwise rebooted")、DT_UP/DT_DOWN(docs/tap_hold.md "*not* persistent")
 - EEPROMに保存される(quantum/eeconfig.h): keymap config(Magic)、default layer、unicode mode、audio、backlight、
@@ -86,4 +92,5 @@ VIAL_PROTOCOL_VERSION = 6
     初期化する。再ビルドして書き込むとDynamicの変更は消える前提になる。
 
 ### XAP
+
 QMK公式の次世代プロトコルとして開発されていたが、masterには入っていない認識。未確認。

journal/2026-09-24-qmk-feature-inventory.md

@@ -69,6 +69,7 @@ Key Lock、One Shot on/off/toggle、Key Override on/off/toggle、Secure 4、Dyna
 Autocorrect 3、Tri Layer Lower/Upper、Repeat/Alt Repeat、Layer Lock。
 
 補足:
+
 - 20250831で旧RGB・マウスの非推奨キーコードを削除(#25444)。
 - VIAはキーマップを16bit値で読み書きするため、上のどの値もキーへ書ける。ファームウェアで無効な機能の値は何もしない。
 
@@ -147,6 +148,7 @@ QMK本家VIAにはこれらを読み出すコマンドがない(9/23調査の再
 ## VIA 0x000D の読み書き範囲(0.34.4で再確認)
 
 9/23の journal(qmk-dynamic-scope)と同じコマンド構成。差分・補足:
+
 - `id_switch_matrix_state` は既定で0を返す(上記)。
 - `id_eeprom_reset` は `VIA_EEPROM_ALLOW_RESET` 定義時のみ有効。
 - エンコーダは `ENCODER_MAP_ENABLE` 時のみ。
@@ -158,5 +160,5 @@ QMK本家VIAにはこれらを読み出すコマンドがない(9/23調査の再
 - 機能一覧: docs/_sidebar.json、builddefs/generic_features.mk の GENERIC_FEATURES。
 - キーコード: data/constants/keycodes/keycodes_*.hjson をバージョン順にマージ。
 - 変更点: docs/ChangeLog/20250223〜20260830。
-- VIA移行PR: https://github.com/qmk/qmk_firmware/pull/26315(develop向けDraft。VIA_EEPROM_MAGIC_ADDR 以外は後方互換を維持する方針と記載)
+- VIA移行PR: <https://github.com/qmk/qmk_firmware/pull/26315(develop向けDraft。VIA_EEPROM_MAGIC_ADDR> 以外は後方互換を維持する方針と記載)
 - 実機での検証はしていない。

journal/2026-09-24-via-module-migration.md

@@ -21,7 +21,7 @@
 - docs/ChangeLog/20260830.md(QMK 0.34.4):
     "upkeep of the VIA integration will transition to the VIA team" /
     "in a future release, the old VIA feature-based implementation is expected to be removed."
-- PR https://github.com/qmk/qmk_firmware/pull/26315 : develop向けDraft。追加ファイルは
+- PR <https://github.com/qmk/qmk_firmware/pull/26315> : develop向けDraft。追加ファイルは
     modules/qmk/via/{qmk_module.json, via.c, via.h, post_config.h, post_rules.mk}。
     qmk_module.json にバージョン欄なし。VIA_EEPROM_MAGIC_ADDR 以外は後方互換を維持すると記載。
 - 0.34.4時点のVIAは従来どおり quantum/via.c、VIA_PROTOCOL_VERSION 0x000D。

journal/2026-10-23-stabilizer-positions.md

@@ -0,0 +1,85 @@
+# スタビライザー位置とswitchOffsetの裏取り(T-30 単位8)
+
+## 結論
+
+- 6U以上の幅の中には、スタビライザー位置が何通りもあるものがある。6U・6.25U・7Uがそう。
+    6.5U と 8〜10U は、出典にある範囲では1通り。
+- switchOffset が要るのは2U未満のキーに限らない。6U offset・6.25U(Cherry G80のWindowsキー付き)・BAE(ANSI互換)では
+    スイッチがキーの中心から外れる。逆に、2U未満でよくあるステップドCaps Lockは、KLEの表し方のおかげで offset 0 になる。
+- ISO Enterは「(w,h)矩形の中心にスイッチ、2U間隔のスタビを縦向きに置く」とすれば、出典にある生成ツールの扱いと合う。
+    実物の寸法の出典はまだ見つけていない。
+- BAEは、スイッチとスタビの配置が型によって違う。決まった形はない。
+
+座標はすべてキーのローカル座標で、(w,h)矩形の中心を原点にした値(U、1U = 19.05mm)。
+PHYの `switchOffset` と同じ基準になる。スタビは中心から±の位置に2つ置く。
+
+## 候補表(Cherry MX系、横向き。縦長のキーは長辺の向きに読み替える)
+
+| 幅 | スタビ(中心から) | switchOffset.x | 使っているキーボード・出典 |
+| --- | --- | --- | --- |
+| 2〜2.75U | ±11.938mm(±0.6267U) | 0 | kad・kiswitch・ai03 で一致 |
+| 3U | ±1U | 0 | DT(Deskthority wiki、以下同じ)、kad、kiswitch |
+| 4U | ±1.5U | 0 | DT、kad(ai03 は3U以上をすべて±1Uにしている) |
+| 4.5U | ±34.671mm(±1.82U) | 0 | DT、kad |
+| 5.5U | ±2.25U | 0 | DT、kad |
+| 6U offset | ±2.5U(芯々95mm) | +0.5U | DT: Cherry G80-1800/11900/11908/11800。kad、kiswitch `6uOffset` |
+| 6U 中央A | ±2U | 0 | DT: Razer BlackWidow、TG3 BL-82 |
+| 6U 中央B | ±2.5U(47.625mm) | 0 | kiswitch の 6U スタビ、kad の6U値。フォーラム: FC660C、Topre |
+| 6.25U 標準 | ±50mm(±2.6247U) | 0 | DT: Filco、Ducky、Poker、Das 3 ほか。kad・kiswitch・ai03 で一致 |
+| 6.25U G80 | ±50mm | +0.625U(11.9mm) | DT: Cherry G80-1000/3000(Windowsキー付き)、Das 2。キーキャップに中央のマウントがない |
+| 6.25U 40mm | ±40mm(±2.1U) | 0 | DT: Leopold FC200、SteelSeries 6GV2/7G、Zowie Celeritas |
+| 6.25U 42.5mm | ±42.5mm | 0 | DT: Leopold FC500、Keycool 87(2012年より前のモデル) |
+| 6.5U | ±2.75U(52.38mm) | 0 | DT: Corsair K60〜K95、QuickFire TK、G710+。kad |
+| 7U | ±3U | 0 | DT: Cherry G80-1000/1800/3000(Windowsキーなし)ほか。kad・kiswitch・ai03 で一致 |
+| 8U / 9U / 9.75U / 10U | ±3.5U | 0 | DT(9U以上も8Uと同じ間隔)。kiswitch は8U〜10Uに同じフットプリントを使う |
+
+候補表から外したもの(実物の位置が出典から決まらない):
+
+- 6U CMStorm QuickFire Ultimate: 「43.5mm, 49mm」「芯々98mm」とだけ書かれていて、軸がどれだけずれているか読み取れない
+- 7U Compaq MX-11800: 軸から見てスタビが左3U・右2.25U。キーキャップの中でどう対称になっているかは書かれていない。
+    スタビがキーの中心に対して対称なら±2.625U、switchOffset +0.375U になり、6.25U と同じ100mmのワイヤーになるが、これは推測
+- 7U Propac: 「55mm apart」とあるだけ
+
+## 異形キー
+
+KLEのプリセット(`keys.json`)と、PHYの `size` の主矩形(w,h):
+
+| キー | KLE | スイッチ | スタビ |
+| --- | --- | --- | --- |
+| ISO Enter | w1.25 h2, w2 1.5 h2 1, x 0.25, x2 -0.25 | 主矩形の中心(0,0) | 縦向きに±0.6267U。kad は h>w なら自動で縦にする。ai03 は長辺を幅として扱うが、向きは利用者が `_rs` で回す |
+| BAE (a) ANSI互換 | w1.5 h2, w2 2.25 h2 1, x 0.75, x2 -0.75, y2 1 | 下段2.25Uの中心 = (-0.375, +0.5) | (-0.375±0.6267, +0.5) の横向き。GMK CYL BAE: 「ANSIの2.25U Enterのスイッチとスタビの位置、1.5UのPipeキーの位置にマウントがある」 |
+| BAE (b) 旧Cherry | 同上 | 不明 | 検索の要約には「上段1.5Uを中心にISO風のスタビ、補助のMXスイッチ」とあったが、原文は確認できていない |
+| ステップドCaps Lock | w1.25 w2 1.75 l | 主矩形 = 高い側の1.25Uの中心。よくある軸の位置(左寄り)と一致し、offset 0 | なし |
+| ステップドCaps Lock(軸が中央) | 同上 | 1.75Uの中心 = +0.25U | なし。数は少ない(Leopoldのセットにある) |
+| Center-stepped | w1 w2 1.5, x 0.25, x2 -0.25 l | 主矩形の中心 | なし |
+
+KLEのステップドキーは、`w` が高い側、`w2` が全幅(kb.js の `stepped` の処理)。
+kad も主矩形の中心にスイッチを置く(`AltWidth > Width` のときは外形の計算だけを広げる)。
+
+## switchOffset が0でないケース
+
+- 2U以上: 6U offset (+0.5U)、6.25U G80 (+0.625U)、BAE(a) (-0.375, +0.5)、おそらく7U Compaq
+- 2U未満: 軸が中央にあるステップドCaps Lock (+0.25U) だけ。よくある左寄りの軸は0
+- 「2U未満のみ」という想定は当たらない
+
+## ツールどうしの食い違い(参考)
+
+- ai03 は6Uで、スイッチをKLEのキーの中心に置いたまま、スタビを+38.1/-57.15mmと左右非対称に置く。
+    kad はスタビをキーの中心に対して±47.5mmで対称に置き、スイッチを+0.5Uずらす。DTの実測(マウントは左から0.5/3.5/5.5U)と合うのは kad
+- ai03 は3U〜5.5Uをすべて±19.05mmにしている。DT・kad とは4U以上で合わない
+- kad は2Uの値を11.9mmに丸めている。kiswitch・ai03 は11.938mm
+
+## 出典
+
+- Deskthority wiki "Space bar dimensions"(`?action=raw` で原文を確認): <https://deskthority.net/wiki/Space_bar_dimensions>
+- swill/kad `key.go` の `GetCherryStabOffset`、`Draw`: <https://github.com/swill/kad>
+- perigoso/keyswitch-kicad-library `KiSwitch/switch.py` の `StabilizerCherryMX.LU_TABLE`、`KiSwitch/keycap.py`:
+    <https://github.com/perigoso/keyswitch-kicad-library>
+- ai03-2725/another-keyboard-builder `plategen.py` の `generate_stabs`: <https://github.com/ai03-2725/another-keyboard-builder>
+- KLE `keys.json`(異形キーのプリセット)、`kb.js` の `stepped`: <https://github.com/ijprest/keyboard-layout-editor>
+- GMK CYL BAE addon: <https://geon.works/products/gmk-cyl-bae-addon-kits>
+- ステップドCaps Lockの軸の位置(フォーラム): <https://deskthority.net/viewtopic.php?p=112099>、
+    <https://deskthority.net/keyboards-f2/keycap-cherry-mx-stepped-capslock-t3794.html>
+- 6Uの中央軸とTopreの値(フォーラム): <https://www.keebtalk.com/t/topre-6u-stabilizer-spacing-spec/17047>
+
+Alpsのスタビ(kad `GetAlpsStabOffset`: 1.75U 11.938、2〜2.75U 14.096、6.25U 41.859、6.5U 45.3mm。DT: 7U ±55mm)は、モックにスイッチの種別がないので扱っていない。

journal/2026-10-29-square-matrix.md

@@ -0,0 +1,92 @@
+# 二乗マトリクスの一般知識(ELC Editorの要検討の前提)
+
+## 結論
+
+- 二乗マトリクス: N本のピンがどれも駆動側にも受信側にもなる。キーは異なる2ピンの順序付きの組 (駆動, 受信) に1つ。
+    上限 N(N−1) キー。対角 (i, i) は使えない。考案は ikeji 氏(2019)。英語では Square / Round-robin / Charlieplex matrix。
+- 実用されているのは改良二乗マトリクス(各ピンに追加ダイオード1つ)。素の二乗マトリクスは主要MCUでゴーストが出る。
+- 通常・倍マトリクスは、二乗マトリクスの部分集合とみなせる(使うピンの組を row→col に限ったもの、その両向き)。
+- 追加ダイオードはELCで持たない。マトリクス方式に依存し、位置が決定的なのでGeneratorで扱える(ユーザー判断)。
+- QMKとZMKで row/col の向きが逆になる問題はGeneratorで扱う(ユーザー判断)。
+- GND直結で対角を使う変形(N² キー)は標準対応しない。Directとの組み合わせで表せるかは、仕様が固まってから確認する(ユーザー判断)。
+
+## 方式の比較(ikeji 2022)
+
+| 方式 | 正常経路のダイオード数 | ゴースト経路のダイオード数 | 成立条件 |
+| --- | --- | --- | --- |
+| 倍 | 1 | 3 | Vf < Vth < 3Vf |
+| 二乗 | 1 | 2 | Vf < Vth < 2Vf |
+| 改良二乗 | 2 | 4 | 2Vf < Vth < 4Vf |
+
+同じピン数Nでのキー数: 通常 N²/4、倍 N²/2、二乗 N(N−1)(N=18 で 81 / 162 / 306)。
+
+## ファームウェア
+
+### QMK
+
+- 標準の二乗マトリクス対応はない。ただし標準機能の組み合わせで実現できる:
+    - `matrix_pins.rows` と `cols` に同じピンを同じ順で並べる。
+    - `config.h` に `#define MATRIX_MASKED` を置き、`<keyboard>.c` の `matrix_mask` で対角のビットを0にする。
+- 対角のマスクは改良版かどうかに関係なく必須。Lowに駆動したrowピンを同じピンのcolとして読むので、常に押された扱いになる
+    (gachiham: マスクしないとPCに認識されなくなった。STM32/RP2040)。
+- `matrix_mask` は使わない位置も0にできる。対角はその一例。
+- 実例 ewderna/cr0wn/cr0wn60(`Dev/KBDs/qmk_firmware/keyboards/ewderna/cr0wn/cr0wn60`):
+    RP2040、9ピン(GP8 GP9 GP10 GP11 GP19 GP21 GP20 GP12 GP18)を rows/cols の両方に列挙、`diode_direction: COL2ROW`。
+    `matrix_mask` は row0〜6 で対角と未使用の位置を0にし、row7 は一部だけ1、row8 は全部0。
+- 対応関係: row = Lowに駆動するピン、col = 読むピン。電流は col → row に流れる。
+
+### ZMK `zmk,kscan-gpio-charlieplex`
+
+- 専用ドライバ。`gpios` にピンを並べるだけで、row/colの区別はない。
+- `interrupt-gpios` なしで n本 → n(n−1)キー(ポーリング)。ありで (n−1)(n−2)キー(割り込み、省電力)。
+    - 割り込みピンは `gpios` に含めない別のピン(ソース上、セルは `gpios` だけから作る)。
+    - 待機中は全セルを出力1にし、割り込みピンのレベルを待つ。割り込みピンの配線はドキュメントに書かれていない。
+    - 低電力改良二乗マトリクス(Cheena: 1ピンを復帰用にして (N−1)(N−2))と同じ構成と思われるが、回路は追えていない。
+- キーの位置は matrix transform の `RC(row, col)` で書き、row = 駆動ピン、col = 受信ピン。対角は transform から除くよう明記されている。
+- ドキュメントは `GPIO_ACTIVE_HIGH` を指定するよう求めている。この場合は入力プルダウン・High駆動で、電流は row → col に流れる。
+    - QMK COL2ROW と逆向き。同じ基板では row/col が転置される。
+    - ソース上は `GPIO_ACTIVE_LOW` ならプルアップ・Low駆動になり、QMKと同じ向きにできる。割り込みと併用できるかは未確認。
+- 待ち時間の設定: `CONFIG_ZMK_KSCAN_CHARLIEPLEX_WAIT_BEFORE_INPUTS` / `_WAIT_BETWEEN_OUTPUTS`。
+
+## 改良二乗マトリクスの追加ダイオードの位置
+
+記事の図は読めなかった。以下は経路の段数から組み立てたもので、ユーザーの認識(各ピンに追加ダイオード)と合う。
+
+- ピン i を、GPIOにつながる線 G_i と、ダイオード D_i(アノードが G_i 側)を挟んだ線 S_i に分ける。
+- キー (駆動 a, 受信 b) は、S_b → G_a の向きのダイオードを付ける(QMK COL2ROW の場合)。
+- 正常経路: G_b →D_b→ S_b →キー→ G_a で2段。
+- ゴースト経路: G_c →D_c→ S_c →キー→ G_b →D_b→ S_b →キー→ G_a で4段。中継するピンでも D_b を通らされる。
+- 回路図を格子に描くと D_i は対角 (i, i) の位置に来る。gachiham の「[0,0] はダイオードを入れているだけなのでスイッチとして使えない」と合う。
+
+## 実測値(ikeji 2022)
+
+| MCU | Vth | Vf | 2Vf | 3Vf | 4Vf |
+| --- | --- | --- | --- | --- | --- |
+| ATmega32u4 | 1.45〜1.56V | 0.513V | 1.034V | 1.495V | 1.963V |
+| RP2040 | 1.26〜1.36V | 0.474V | 0.949V | 1.418V | 1.862V |
+
+- 素の二乗マトリクスは両MCUとも Vth > 2Vf で、ゴーストがLowと読まれる。改良版は両MCUとも成立する。
+- ATmega32u4 では倍マトリクスの条件(Vth < 3Vf)が際どい。著者は測定条件(5V弱の電源、非選択線の電流)を疑っている。
+- MCUとダイオードの相性は Vf と Vth の比で決まる。
+
+## 出典
+
+- ikeji 2019: ikeji「キーボードのマトリクス方式の分類」ikejiのblog、2019-12-14
+    - 参照先: <https://blog.ikejima.org/make/keyboard/2019/12/14/keyboard-circuit.html>
+    - 二乗マトリクスの初出。ゴーストはダイオード2つ分なので部品の組み合わせに注意、1キー2ダイオードが要るかも、と書いている。
+- ikeji 2022: ikeji「変則マトリクスキーボード設計」ikejiのblog、2022-12-07
+    - 参照先: <https://blog.ikejima.org/make/keyboard/2022/12/07/atypical-matrix-design.html>
+- gachiham: gachiham「QMK 0.19.2で改良二乗マトリクスのキーボードファームウェアを作っていく話」gachiham's blog、2022-12-17
+    - 参照先: <https://gachiham.hatenablog.com/entry/2022/12/17/000000>
+    - 9ピン72キーから63キー。rows/colsに同じピンを並べ、MATRIX_MASKEDを使う。
+- Cheena: Cheena「自作キーボード初心者のためのでかいキーボード設計法」note、2025-05-26(2025-09 追記あり)
+    - 参照先: <https://note.com/cheena/n/n846846c3efce>
+    - 低電力改良二乗マトリクス。
+- ZMK kscan: 「Keyboard Scan Configuration」ZMK Firmware ドキュメント
+    - 参照先: <https://zmk.dev/docs/config/kscan>
+- ZMK ドライバ: zmkfirmware/zmk のソース `app/module/drivers/kscan/kscan_gpio_charlieplex.c`(main ブランチ)
+    - 参照先: <https://raw.githubusercontent.com/zmkfirmware/zmk/main/app/module/drivers/kscan/kscan_gpio_charlieplex.c>
+
+## 捨てた記述
+
+- 二乗マトリクスを e3w2q 氏の発案とした記憶は誤り。初出は ikeji 2019。

mock/.gitignore

@@ -0,0 +1,4 @@
+node_modules/
+dist/
+test-results/
+playwright-report/

mock/.prettierrc.json

@@ -0,0 +1 @@
+{ "printWidth": 110 }

mock/e2e/elc.spec.ts

@@ -0,0 +1,170 @@
+import { expect, test } from "@playwright/test";
+import path from "node:path";
+import { readFile } from "node:fs/promises";
+
+async function projectJson(page: import("@playwright/test").Page) {
+  const [download] = await Promise.all([
+    page.waitForEvent("download"),
+    page.getByRole("button", { name: "プロジェクトを保存" }).click(),
+  ]);
+  const file = path.join(test.info().outputDir, download.suggestedFilename());
+  await download.saveAs(file);
+  return JSON.parse(await readFile(file, "utf8"));
+}
+async function loadProject(page: import("@playwright/test").Page, project: unknown) {
+  const chooser = page.waitForEvent("filechooser");
+  await page.getByRole("button", { name: "プロジェクトを開く" }).click();
+  await (
+    await chooser
+  ).setFiles({
+    name: "case.bkle.json",
+    mimeType: "application/json",
+    buffer: Buffer.from(JSON.stringify(project)),
+  });
+}
+
+test("provider, key terminals and diode edit wiring and show collisions", async ({ page }) => {
+  await page.goto("/");
+  await page.getByRole("button", { name: "ELC" }).click();
+  await page.getByTestId("provider-id").fill("MCU");
+  await page.getByRole("button", { name: "MCUを追加・更新" }).click();
+  await expect(page.getByText(/MCU · mcu · RP2040/)).toBeVisible();
+  const view = page.locator(".wiring-box [data-testid=keyboard-view]");
+  const first = view.locator(".kv-key").nth(0);
+  await first.click();
+  await page.locator(".edit-form select").nth(0).selectOption("MCU.GP0");
+  await page.locator(".edit-form select").nth(1).selectOption("MCU.GP1");
+  await page.locator(".edit-form select").nth(2).selectOption("a-to-b");
+  await page.getByRole("button", { name: "配線を保存" }).click();
+  await expect(page.getByTestId("unwired-count")).toHaveText("15");
+  await expect(first).toHaveClass(/ok/);
+  await expect(first).toContainText("GP0/GP1");
+
+  await view.locator(".kv-key").nth(1).click();
+  await page.locator(".edit-form select").nth(0).selectOption("MCU.GP0");
+  await page.locator(".edit-form select").nth(1).selectOption("MCU.GP1");
+  await page.locator(".edit-form select").nth(2).selectOption("a-to-b");
+  await page.getByRole("button", { name: "配線を保存" }).click();
+  await expect(page.getByText("wiring-collision", { exact: false }).first()).toBeVisible();
+  await expect(view.locator(".kv-key.error")).toHaveCount(2);
+});
+
+test("batch wiring applies selected keys in row-major PHY order", async ({ page }) => {
+  await page.goto("/");
+  await page.getByRole("button", { name: "ELC" }).click();
+  await page.getByTestId("provider-id").fill("MCU");
+  await page.getByRole("button", { name: "MCUを追加・更新" }).click();
+  const views = page.locator(".wiring-box [data-testid=keyboard-view]");
+  const batchView = views.nth(1);
+  await batchView.locator(".kv-key").nth(0).click();
+  await batchView.locator(".kv-key").nth(1).click();
+  await page.getByTestId("batch-row-select").selectOption("MCU.GP0");
+  await page.getByRole("button", { name: "rowへ追加" }).click();
+  await page.getByTestId("batch-col-select").selectOption("MCU.GP1");
+  await page.getByRole("button", { name: "colへ追加" }).click();
+  await page.getByTestId("batch-col-select").selectOption("MCU.GP2");
+  await page.getByRole("button", { name: "colへ追加" }).click();
+  await page.getByTestId("batch-wire").click();
+  await expect(page.getByTestId("batch-preview")).toBeVisible();
+  await expect(page.getByTestId("batch-preview").locator("tbody tr").nth(0)).toContainText("MCU.GP0");
+  await page.getByTestId("batch-confirm").click();
+  await expect(page.getByTestId("unwired-count")).toHaveText("14");
+  await expect(views.first().locator(".kv-key").nth(0)).toContainText("GP0/GP1");
+  await expect(views.first().locator(".kv-key").nth(1)).toContainText("GP0/GP2");
+});
+
+test("batch wiring previews overwritten assignments and blocks insufficient capacity", async ({ page }) => {
+  await page.goto("/");
+  await page.getByRole("button", { name: "ELC" }).click();
+  await page.getByTestId("provider-id").fill("MCU");
+  await page.getByRole("button", { name: "MCUを追加・更新" }).click();
+  const view = page.locator(".wiring-box [data-testid=keyboard-view]");
+  await view.locator(".kv-key").first().click();
+  await page.locator(".edit-form select").nth(0).selectOption("MCU.GP5");
+  await page.locator(".edit-form select").nth(1).selectOption("MCU.GP6");
+  await page.getByRole("button", { name: "配線を保存" }).click();
+  const batchView = page.locator(".wiring-box [data-testid=keyboard-view]").nth(1);
+  for (let i = 0; i < 3; i++) await batchView.locator(".kv-key").nth(i).click();
+  await page.getByTestId("batch-row-select").selectOption("MCU.GP0");
+  await page.getByRole("button", { name: "rowへ追加" }).click();
+  await page.getByTestId("batch-col-select").selectOption("MCU.GP1");
+  await page.getByRole("button", { name: "colへ追加" }).click();
+  await page.getByTestId("batch-wire").click();
+  await expect(page.getByTestId("batch-capacity-error")).toBeVisible();
+  await expect(page.getByTestId("batch-confirm")).toBeDisabled();
+  await page.getByTestId("batch-col-select").selectOption("MCU.GP2");
+  await page.getByRole("button", { name: "colへ追加" }).click();
+  await page.getByTestId("batch-wire").click();
+  const rows = page.getByTestId("batch-preview").locator("tbody tr");
+  await expect(rows).toHaveCount(3);
+  await expect(rows.first()).toContainText("上書き");
+});
+
+test("diode direction is part of collision identity and unknown MCU parts accept free pin names", async ({
+  page,
+}) => {
+  await page.goto("/");
+  let source = await projectJson(page);
+  const [k1, k2] = source.idx.order;
+  source.elc.providers = [{ id: "MCU", kind: "mcu", part: "RP2040" }];
+  source.elc.keys = [
+    { key: k1, detect: "contact", terminals: { a: "MCU.GP0", b: "MCU.GP1" }, diode: "a-to-b" },
+    { key: k2, detect: "contact", terminals: { a: "MCU.GP0", b: "MCU.GP1" }, diode: "b-to-a" },
+  ];
+  await loadProject(page, source);
+  await page.getByRole("button", { name: "ELC" }).click();
+  await expect(page.getByText("wiring-collision", { exact: false })).toHaveCount(0);
+  source.elc.keys[1].diode = "a-to-b";
+  await loadProject(page, source);
+  await page.getByRole("button", { name: "ELC" }).click();
+  await expect(page.getByText("wiring-collision", { exact: false }).first()).toBeVisible();
+
+  await page.getByTestId("provider-id").fill("ALT");
+  await page.locator("input[list=mcu-parts]").fill("Unknown-MCU");
+  await page.getByRole("button", { name: "MCUを追加・更新" }).click();
+  await expect(page.getByText("未知の品番はピン名を自由入力します。")).toBeVisible();
+  const key = page.locator(".wiring-box .kv-key").nth(2);
+  await key.click();
+  await page.getByLabel("a端子自由入力").fill("ALT.PIN_X");
+  await page.getByLabel("b端子自由入力").fill("ALT.PIN_Y");
+  await page.getByRole("button", { name: "配線を保存" }).click();
+  await expect(page.getByTestId("unwired-count")).toHaveText("13");
+});
+
+test("LED chain candidates include only per-key LED keys and @led parts across all variants", async ({
+  page,
+}) => {
+  await page.goto("/");
+  const source = await projectJson(page);
+  const keys = [] as any[];
+  const walk = (nodes: any[]) =>
+    nodes.forEach((n) => {
+      if (n.type === "key") keys.push(n);
+      else if (n.type === "cluster") walk(n.children);
+      else if (n.type === "variantGroup") n.children.forEach((v: any) => walk(v.children));
+    });
+  walk(source.phy.root);
+  keys[0].perKeyLED = true;
+  keys[1].perKeyLED = false;
+  source.phy.root.push({
+    type: "component",
+    id: "cmp-test-led",
+    transform: { x: 0, y: 0, rotation: 0 },
+    partGroup: "@led",
+  });
+  source.phy.root.push({
+    type: "component",
+    id: "cmp-test-other",
+    transform: { x: 0, y: 0, rotation: 0 },
+    partGroup: "@screw",
+  });
+  await loadProject(page, source);
+  await page.getByRole("button", { name: "ELC" }).click();
+  await page.getByLabel("チェーンID").fill("LED1");
+  await page.getByLabel("データピン").fill("MCU.DATA");
+  await page.getByRole("button", { name: "作成" }).click();
+  await expect(page.getByTestId("led-candidate").locator(`option[value="${keys[0].id}"]`)).toHaveCount(1);
+  await expect(page.getByTestId("led-candidate").locator('option[value="cmp-test-led"]')).toHaveCount(1);
+  await expect(page.getByTestId("led-candidate").locator(`option[value="${keys[1].id}"]`)).toHaveCount(0);
+  await expect(page.getByTestId("led-candidate").locator('option[value="cmp-test-other"]')).toHaveCount(0);
+});

mock/e2e/generator.spec.ts

@@ -0,0 +1,73 @@
+import { expect, test } from "@playwright/test";
+import path from "node:path";
+
+test("generates the 4x4 preview and blocks output when a wire is removed", async ({ page }) => {
+  await page.goto("/");
+  const [download] = await Promise.all([
+    page.waitForEvent("download"),
+    page.getByRole("button", { name: "プロジェクトを保存" }).click(),
+  ]);
+  const file = path.join(test.info().outputDir, download.suggestedFilename());
+  await download.saveAs(file);
+  const source = JSON.parse(await (await import("node:fs/promises")).readFile(file, "utf8"));
+  const keyIds: string[] = source.idx.order;
+  source.elc.providers = [{ id: "MCU", kind: "mcu", part: "RP2040" }];
+  source.elc.keys = keyIds.map((key, i) => ({
+    key,
+    detect: "contact",
+    terminals: { a: `MCU.GP${Math.floor(i / 4)}`, b: `MCU.GP${4 + (i % 4)}` },
+    diode: "a-to-b",
+  }));
+  source.map.layers[0].keymap = keyIds.map((key, i) => ({ keyId: key, keycode: `KC_${i % 10}` }));
+  const uploadProject = async (obj: unknown) => {
+    const chooserPromise = page.waitForEvent("filechooser");
+    await page.getByRole("button", { name: "プロジェクトを開く" }).click();
+    await (
+      await chooserPromise
+    ).setFiles({
+      name: "fixture.bkle.json",
+      mimeType: "application/json",
+      buffer: Buffer.from(JSON.stringify(obj)),
+    });
+  };
+  await uploadProject(source);
+  await page.getByRole("button", { name: "Generator" }).click();
+  for (let i = 0; i < 4; i++) {
+    await page.getByTestId("row-pin-select").selectOption(`MCU.GP${i}`);
+    await page.getByRole("button", { name: "row追加" }).click();
+    await page.getByTestId("col-pin-select").selectOption(`MCU.GP${i + 4}`);
+    await page.getByRole("button", { name: "col追加" }).click();
+  }
+  await page.getByTestId("generate-button").click();
+  await expect(page.getByTestId("mapping-count")).toHaveText("16行");
+  const rows = page.locator(".preview tbody tr");
+  await expect(rows).toHaveCount(16);
+  await expect(rows.nth(0).locator("td").nth(2)).toHaveText("0");
+  await expect(rows.nth(0).locator("td").nth(3)).toHaveText("0");
+  await expect(rows.nth(4).locator("td").nth(2)).toHaveText("1");
+  await expect(rows.nth(4).locator("td").nth(3)).toHaveText("0");
+
+  await page.getByRole("button", { name: "ELC" }).click();
+  await page.locator(".wiring-box [data-testid=keyboard-view] .kv-key").first().click();
+  await page.getByRole("button", { name: "配線解除" }).click();
+  await page.getByRole("button", { name: "Generator" }).click();
+  await page.getByTestId("generate-button").click();
+  await expect(page.locator(".errors").getByText("unwired-key", { exact: true })).toBeVisible();
+  await expect(page.getByTestId("mapping-count")).toHaveCount(0);
+});
+
+test("project undo invalidates a result generated from the newer project state", async ({ page }) => {
+  await page.goto("/");
+  await page.getByRole("button", { name: "ELC" }).click();
+  await page.getByTestId("provider-id").fill("MCU");
+  await page.getByRole("button", { name: "MCUを追加・更新" }).click();
+  await page.getByRole("button", { name: "Generator" }).click();
+  await page.getByTestId("generate-button").click();
+  await expect(page.locator(".errors")).toBeVisible();
+  await page.getByRole("button", { name: "Undo" }).click();
+  await expect(page.locator(".errors")).toHaveCount(0);
+  await expect(page.getByTestId("mapping-count")).toHaveCount(0);
+  await page.getByRole("button", { name: "Redo" }).click();
+  await expect(page.locator(".errors")).toHaveCount(0);
+  await expect(page.getByTestId("mapping-count")).toHaveCount(0);
+});

mock/e2e/idx.spec.ts

@@ -0,0 +1,129 @@
+import { expect, test, type Page } from "@playwright/test";
+
+const canvasKeys = (page: Page) => page.locator('[data-testid="idx-canvas"] .key');
+const numberOf = (page: Page, i: number) => canvasKeys(page).nth(i).getByTestId("idx-number");
+
+/** Drags key `from` onto key `to`, releasing at `fraction` of the target's width. */
+async function dragKey(page: Page, from: number, to: number, fraction: number) {
+  const a = (await canvasKeys(page).nth(from).locator("rect").boundingBox())!;
+  const b = (await canvasKeys(page).nth(to).locator("rect").boundingBox())!;
+  await page.mouse.move(a.x + a.width / 2, a.y + a.height / 2);
+  await page.mouse.down();
+  await page.mouse.move(a.x + a.width / 2 + 10, a.y + a.height / 2, { steps: 3 });
+  await page.mouse.move(b.x + b.width * fraction, b.y + b.height / 2, { steps: 5 });
+  await page.mouse.up();
+}
+
+test.beforeEach(async ({ page }) => {
+  await page.goto("/");
+  await page.getByRole("button", { name: "IDX", exact: true }).click();
+  await expect(canvasKeys(page)).toHaveCount(16);
+});
+
+test("drops at the edge of a key insert before or after it, and undo restores", async ({ page }) => {
+  await dragKey(page, 0, 3, 0.9);
+  await expect(numberOf(page, 0)).toHaveText("3");
+  await expect(numberOf(page, 3)).toHaveText("2");
+  await expect(numberOf(page, 1)).toHaveText("0");
+  await dragKey(page, 0, 1, 0.1);
+  await expect(numberOf(page, 0)).toHaveText("0");
+  await page.getByRole("button", { name: "Undo" }).click();
+  await expect(numberOf(page, 0)).toHaveText("3");
+  await page.getByRole("button", { name: "Undo" }).click();
+  await expect(numberOf(page, 0)).toHaveText("0");
+  await expect(numberOf(page, 3)).toHaveText("3");
+});
+
+test("a drop in the middle of a key swaps the two and leaves the others", async ({ page }) => {
+  await dragKey(page, 0, 5, 0.5);
+  await expect(numberOf(page, 0)).toHaveText("5");
+  await expect(numberOf(page, 5)).toHaveText("0");
+  await expect(numberOf(page, 1)).toHaveText("1");
+  await expect(numberOf(page, 4)).toHaveText("4");
+});
+
+test("a key added in PHY is registered at the end and can be dragged to the front", async ({ page }) => {
+  await page.getByRole("button", { name: "PHY", exact: true }).click();
+  await page.getByRole("button", { name: "キーを足す" }).click();
+  await page.getByRole("button", { name: "IDX", exact: true }).click();
+  await expect(numberOf(page, 16)).toHaveText("16");
+  await dragKey(page, 16, 0, 0.1);
+  await expect(numberOf(page, 16)).toHaveText("0");
+  await expect(numberOf(page, 0)).toHaveText("1");
+});
+
+test("the variant tree switches the shown configuration without touching other keys' order", async ({
+  page,
+}) => {
+  await page.getByRole("button", { name: "PHY", exact: true }).click();
+  const keys = page.locator('[data-node-type="key"]');
+  const firstId = await keys.nth(0).getAttribute("data-node-id");
+  await keys.nth(0).click();
+  await keys.nth(1).click({ modifiers: ["Shift"] });
+  await page.getByRole("button", { name: "選択からバリアントグループ" }).click();
+  await page.getByRole("button", { name: "IDX", exact: true }).click();
+  const optionA = page.locator(".tree").getByRole("button", { name: /Option A/ });
+  const optionB = page.locator(".tree").getByRole("button", { name: /Option B/ });
+  await expect(optionA).toHaveAttribute("aria-pressed", "true");
+  await expect(page.locator(`[data-testid="idx-canvas"] [data-key-id="${firstId}"]`)).toHaveCount(1);
+  await optionB.click();
+  await expect(optionB).toHaveAttribute("aria-pressed", "true");
+  await expect(page.locator(`[data-testid="idx-canvas"] [data-key-id="${firstId}"]`)).toHaveCount(0);
+  await expect(canvasKeys(page)).toHaveCount(14);
+  await expect(numberOf(page, 0)).toHaveText("0");
+});
+
+test("a column-major preset previews, applies as one undo step", async ({ page }) => {
+  await page.getByLabel("走査").selectOption({ label: "列優先" });
+  await page.getByRole("button", { name: "プレビュー" }).click();
+  await expect(numberOf(page, 4)).toHaveText("1");
+  await expect(page.locator(".scan-line")).toHaveCount(4);
+  await page.getByRole("button", { name: "適用" }).click();
+  await expect(numberOf(page, 4)).toHaveText("1");
+  await expect(numberOf(page, 1)).toHaveText("4");
+  await page.getByRole("button", { name: "Undo" }).click();
+  await expect(numberOf(page, 1)).toHaveText("1");
+});
+
+test("the preview shifts a picked column by one row and Esc discards it", async ({ page }) => {
+  await page.getByRole("button", { name: "プレビュー" }).click();
+  await canvasKeys(page).nth(0).click();
+  await page.keyboard.press("ArrowDown");
+  // column 0 now belongs one row lower: row 0 is keys 1..3
+  await expect(numberOf(page, 1)).toHaveText("0");
+  await expect(numberOf(page, 0)).toHaveText("3");
+  await page.keyboard.press("Escape");
+  await expect(page.getByRole("button", { name: "プレビュー" })).toBeVisible();
+  await expect(numberOf(page, 0)).toHaveText("0");
+});
+
+test("a range selection renumbers from its first key's position", async ({ page }) => {
+  const k2 = (await canvasKeys(page).nth(2).locator("rect").boundingBox())!;
+  const k15 = (await canvasKeys(page).nth(15).locator("rect").boundingBox())!;
+  await page.mouse.move(k2.x + 5, k2.y - 20);
+  await page.mouse.down();
+  await page.mouse.move(k15.x + k15.width + 20, k15.y + k15.height + 20, { steps: 6 });
+  await page.mouse.up();
+  await expect(page.getByText("選択範囲(8)")).toBeVisible();
+  await page.getByText("選択範囲(8)").click();
+  await page.getByLabel("走査").selectOption({ label: "列優先" });
+  await page.getByRole("button", { name: "プレビュー" }).click();
+  await page.getByRole("button", { name: "適用" }).click();
+  // 0, 1, then the right half column by column, then the rest of the left half
+  await expect(numberOf(page, 2)).toHaveText("2");
+  await expect(numberOf(page, 6)).toHaveText("3");
+  await expect(numberOf(page, 3)).toHaveText("6");
+  await expect(numberOf(page, 4)).toHaveText("10");
+});
+
+test("importing a QMK layout copies its key order onto matching keys", async ({ page }) => {
+  const layout = [0, 1, 2, 3].flatMap((x) => [0, 1, 2, 3].map((y) => ({ matrix: [y, x], x, y })));
+  await page.getByTestId("idx-import-file").setInputFiles({
+    name: "keyboard.json",
+    mimeType: "application/json",
+    buffer: Buffer.from(JSON.stringify({ layouts: { LAYOUT: { layout } } })),
+  });
+  await expect(page.getByTestId("idx-import-result")).toContainText("16件を照合");
+  await expect(numberOf(page, 4)).toHaveText("1");
+  await expect(numberOf(page, 1)).toHaveText("4");
+});

mock/e2e/map.spec.ts

@@ -0,0 +1,103 @@
+import { expect, test } from "@playwright/test";
+import path from "node:path";
+import { readFile } from "node:fs/promises";
+
+test.beforeEach(async ({ page }) => {
+  await page.goto("/");
+  await page.getByRole("button", { name: "MAP", exact: true }).click();
+});
+
+test("assign codes and rename referenced layers safely", async ({ page }) => {
+  await page.getByTestId("map-add-layer").click();
+  await expect(page.getByRole("alert")).toContainText("レイヤー名を入力してください");
+  await page.getByLabel("追加するレイヤー名").fill("Base");
+  await page.getByTestId("map-add-layer").click();
+  await expect(page.getByRole("alert")).toContainText("already exists");
+
+  const keys = page.locator('[data-testid="keyboard-view"] [data-key-id]');
+  const firstId = await keys.nth(0).getAttribute("data-key-id");
+  const secondId = await keys.nth(1).getAttribute("data-key-id");
+  await keys.nth(0).click();
+  await page.getByLabel("キーコード").fill("KC_A");
+  await page.getByRole("button", { name: "割り当て", exact: true }).click();
+  await expect(page.locator(`[data-key-id="${firstId}"] text`)).toContainText("KC_A");
+
+  await page.getByLabel("追加するレイヤー名").fill("Nav");
+  await page.getByTestId("map-add-layer").click();
+  await expect(page.getByRole("tab", { name: "Nav" })).toHaveAttribute("aria-selected", "true");
+  await keys.nth(1).click();
+  await page.getByLabel("キーコード").fill("MO(Nav)");
+  await page.getByRole("button", { name: "割り当て", exact: true }).click();
+  await expect(page.locator(`[data-key-id="${secondId}"] text`)).toContainText("MO(Nav)");
+
+  await page.getByLabel("新しい名前").fill("Navigation");
+  await page.getByTestId("map-rename-layer").click();
+  await expect(page.locator(`[data-key-id="${secondId}"] text`)).toContainText("MO(Navigation)");
+  await page.getByTestId("map-delete-layer").click();
+  await expect(page.getByRole("alert")).toContainText("referenced");
+});
+
+test("assignment click creates one undo step and unknown existing codes stay read-only", async ({ page }) => {
+  const key = page.locator('[data-testid="keyboard-view"] [data-key-id]').first();
+  const id = await key.getAttribute("data-key-id");
+  await key.click();
+  await page.getByLabel("キーコード").fill("KC_A");
+  await page.getByRole("button", { name: "割り当て", exact: true }).click();
+  await expect(page.locator(`[data-key-id="${id}"] text`)).toContainText("KC_A");
+  await page.getByRole("button", { name: "Undo" }).click();
+  await expect(page.locator(`[data-key-id="${id}"] text`)).not.toContainText("KC_A");
+
+  const [download] = await Promise.all([
+    page.waitForEvent("download"),
+    page.getByRole("button", { name: "プロジェクトを保存" }).click(),
+  ]);
+  const filePath = path.join(test.info().outputDir, download.suggestedFilename());
+  await download.saveAs(filePath);
+  const file = await readFile(filePath, "utf8");
+  const source = JSON.parse(file);
+  source.map.layers[0].keymap = [{ keyId: id, keycode: "KC_UNKNOWN_VENDOR_CODE" }];
+  const chooser = page.waitForEvent("filechooser");
+  await page.getByRole("button", { name: "プロジェクトを開く" }).click();
+  await (
+    await chooser
+  ).setFiles({
+    name: "unknown.bkle.json",
+    mimeType: "application/json",
+    buffer: Buffer.from(JSON.stringify(source)),
+  });
+  await page.getByRole("button", { name: "MAP", exact: true }).click();
+  await page.locator(`[data-testid="keyboard-view"] [data-key-id="${id}"]`).click();
+  await expect(page.getByRole("status")).toContainText("未知のキーコード");
+  await expect(page.getByRole("button", { name: "割り当て", exact: true })).toBeDisabled();
+  await expect(page.getByRole("button", { name: "割り当て解除" })).toBeDisabled();
+});
+
+test("MAP editing controls are disabled when profile unit sizes differ", async ({ page }) => {
+  const [download] = await Promise.all([
+    page.waitForEvent("download"),
+    page.getByRole("button", { name: "プロジェクトを保存" }).click(),
+  ]);
+  const filePath = path.join(test.info().outputDir, download.suggestedFilename());
+  await download.saveAs(filePath);
+  const source = JSON.parse(await readFile(filePath, "utf8"));
+  source.phy.profiles.push({
+    ...source.phy.profiles[0],
+    id: "alternate",
+    name: "Alternate",
+    unitSize: { x: 18, y: 18 },
+  });
+  const chooser = page.waitForEvent("filechooser");
+  await page.getByRole("button", { name: "プロジェクトを開く" }).click();
+  await (
+    await chooser
+  ).setFiles({
+    name: "unit-mismatch.bkle.json",
+    mimeType: "application/json",
+    buffer: Buffer.from(JSON.stringify(source)),
+  });
+  await page.getByRole("button", { name: "MAP", exact: true }).click();
+  await expect(page.getByTestId("map-add-layer")).toBeDisabled();
+  await expect(page.getByTestId("map-rename-layer")).toBeDisabled();
+  await expect(page.getByTestId("map-delete-layer")).toBeDisabled();
+  await expect(page.getByLabel("キーコード")).toHaveCount(0);
+});

mock/e2e/phy.spec.ts

@@ -0,0 +1,771 @@
+import { expect, test } from "@playwright/test";
+import { readFile } from "node:fs/promises";
+import path from "node:path";
+
+test.beforeEach(async ({ page }) => {
+  await page.goto("/");
+  await expect(page.locator('[data-node-type="key"]')).toHaveCount(16);
+});
+
+async function makeCluster(page: import("@playwright/test").Page) {
+  const keys = page.locator('[data-node-type="key"]');
+  await keys.nth(0).click();
+  await keys.nth(1).click({ modifiers: ["Shift"] });
+  await page.getByRole("button", { name: "クラスターにする" }).click();
+  return page.locator('[data-node-type="cluster"]').first();
+}
+
+test("階層パネルを閉じると、キャンバスが空いた幅を埋める", async ({ page }) => {
+  const canvas = page.locator(".canvas-pane");
+  const properties = page.locator(".properties");
+  const before = (await canvas.boundingBox())!;
+  await page.getByRole("button", { name: "階層" }).click();
+  await expect(page.locator(".tree")).toHaveCount(0);
+  await expect.poll(async () => (await canvas.boundingBox())!.width).toBeGreaterThan(before.width + 200);
+  const after = (await canvas.boundingBox())!;
+  const side = (await properties.boundingBox())!;
+  const workspace = (await page.locator(".workspace").boundingBox())!;
+  expect(Math.abs(after.x - workspace.x)).toBeLessThan(1);
+  expect(Math.abs(side.x + side.width - (workspace.x + workspace.width))).toBeLessThan(1);
+});
+
+test("選択レイヤーはキーより前面にあり、回転とフォーカスに追従する", async ({ page }) => {
+  test.setTimeout(60_000);
+  const keys = page.locator('[data-node-type="key"]');
+  const leftId = await keys.first().getAttribute("data-node-id");
+  await keys.first().click();
+  const order = await page.locator("svg.canvas").evaluate((svg, id) => {
+    const face = svg.querySelector(`[data-node-id="${id}"]`)!;
+    const layer = svg.querySelector(`[data-sel-id="${id}"]`)!;
+    return [
+      face.compareDocumentPosition(layer) & Node.DOCUMENT_POSITION_FOLLOWING,
+      layer.parentElement?.classList.contains("selection-layer"),
+    ];
+  }, leftId);
+  expect(order).toEqual([4, true]);
+
+  const cluster = await makeCluster(page);
+  const clusterId = await cluster.getAttribute("data-node-id");
+  await page.locator(`[data-tree-id="${clusterId}"]`).first().click();
+  await page.getByLabel("Rotation").fill("35");
+  await page.getByLabel("Rotation").dispatchEvent("change");
+  const key = cluster.locator('[data-node-type="key"]').first();
+  const id = await key.getAttribute("data-node-id");
+  await key.click();
+  const aligned = async () =>
+    page.evaluate((keyId) => {
+      const face = document.querySelector(`[data-node-id="${keyId}"] .key-face`)!.getBoundingClientRect();
+      const outline = document.querySelector(`[data-sel-id="${keyId}"]`)!.getBoundingClientRect();
+      return [
+        Math.abs(face.x - outline.x),
+        Math.abs(face.y - outline.y),
+        Math.abs(face.width - outline.width),
+        Math.abs(face.height - outline.height),
+      ];
+    }, id);
+  expect((await aligned()).every((delta) => delta < 1)).toBe(true);
+  await page.locator(`[data-tree-id="${clusterId}"]`).first().click();
+  await page.locator(".canvas-pane").focus();
+  await page.keyboard.press("Enter");
+  const focused = page.locator(`[data-node-id="${id}"]`).last();
+  await focused.click();
+  expect((await aligned()).every((delta) => delta < 1)).toBe(true);
+});
+
+test("ドラッグの刻みをUndo/Redoでき、コンソールにエラーがない", async ({ page }) => {
+  const errors: string[] = [];
+  page.on("console", (message) => {
+    if (message.type() === "error") errors.push(message.text());
+  });
+  await page.reload();
+  await expect(page.locator('[data-node-type="key"]')).toHaveCount(16);
+  const key = page.locator('[data-node-type="key"]').first();
+  const before = await key.getAttribute("transform");
+  const box = await key.boundingBox();
+  await page.mouse.move(box!.x + box!.width / 2, box!.y + box!.height / 2);
+  await page.mouse.down();
+  await page.mouse.move(box!.x + box!.width / 2 + 24, box!.y + box!.height / 2, { steps: 3 });
+  await page.mouse.up();
+  await expect.poll(() => key.getAttribute("transform")).not.toBe(before);
+  const after = await key.getAttribute("transform");
+  await page.getByRole("button", { name: "Undo" }).click();
+  await expect(key).toHaveAttribute("transform", before!);
+  await page.getByRole("button", { name: "Redo" }).click();
+  await expect(key).toHaveAttribute("transform", after!);
+  expect(errors).toEqual([]);
+});
+
+test("ドラッグ中に右端で自動スクロールし、Undo 1回で戻る", async ({ page }) => {
+  const key = page.locator('[data-node-type="key"]').first();
+  const before = await key.getAttribute("transform");
+  const keyBox = (await key.boundingBox())!;
+  const canvasBox = (await page.locator("svg.canvas").boundingBox())!;
+  const y = keyBox.y + keyBox.height / 2;
+  await page.mouse.move(keyBox.x + keyBox.width / 2, y);
+  await page.mouse.down();
+  await page.mouse.move(canvasBox.x + canvasBox.width - 8, y, { steps: 8 });
+  const atEdge = await key.getAttribute("transform");
+  await page.waitForTimeout(700);
+  expect(await key.getAttribute("transform")).not.toBe(atEdge);
+  await page.mouse.up();
+  const released = await key.getAttribute("transform");
+  await page.waitForTimeout(250);
+  expect(await key.getAttribute("transform")).toBe(released);
+  await page.getByRole("button", { name: "Undo" }).click();
+  await expect(key).toHaveAttribute("transform", before!);
+});
+
+test("選択中のクラスターにだけ原点の丸を出す", async ({ page }) => {
+  const keys = page.locator('[data-node-type="key"]');
+  const corner = (await keys.nth(0).locator(".key-face").boundingBox())!;
+  const cluster = await makeCluster(page);
+  const clusterId = await cluster.getAttribute("data-node-id");
+  await keys.nth(5).click();
+  await expect(page.locator(".origin")).toHaveCount(0);
+  await page.locator(`[data-tree-id="${clusterId}"]`).first().click();
+  const origin = page.locator(`[data-origin-id="${clusterId}"]`);
+  await expect(origin).toHaveCount(1);
+  const box = (await origin.boundingBox())!;
+  expect(Math.abs(box.x + box.width / 2 - corner.x)).toBeLessThan(2);
+  expect(Math.abs(box.y + box.height / 2 - corner.y)).toBeLessThan(2);
+  await keys.nth(5).click();
+  await expect(page.locator(".origin")).toHaveCount(0);
+});
+
+test("クラスター化で画面位置を保つ", async ({ page }) => {
+  const keys = page.locator('[data-node-type="key"]');
+  const centers = async () =>
+    keys.evaluateAll((es) =>
+      es.slice(0, 2).map((e) => {
+        const r = e.getBoundingClientRect();
+        return [r.x + r.width / 2, r.y + r.height / 2];
+      }),
+    );
+  const before = await centers();
+  await keys.nth(0).click();
+  await keys.nth(1).click({ modifiers: ["Shift"] });
+  await page.getByRole("button", { name: "クラスターにする" }).click();
+  const after = await centers();
+  for (let i = 0; i < 2; i++) {
+    expect(after[i]![0]).toBeCloseTo(before[i]![0]!, 0);
+    expect(after[i]![1]).toBeCloseTo(before[i]![1]!, 0);
+  }
+});
+
+test("複数選択のドラッグが全件に適用される", async ({ page }) => {
+  const keys = page.locator('[data-node-type="key"]');
+  const before = await keys.evaluateAll((es) => es.slice(0, 2).map((e) => e.getAttribute("transform")));
+  await keys.nth(0).click();
+  await keys.nth(1).click({ modifiers: ["Shift"] });
+  const box = await keys.nth(0).boundingBox();
+  if (!box) throw new Error("key missing");
+  await page.mouse.move(box.x + box.width / 2, box.y + box.height / 2);
+  await page.mouse.down();
+  await page.mouse.move(box.x + box.width / 2 + 27, box.y + box.height / 2 + 10, { steps: 3 });
+  await page.mouse.up();
+  const after = await keys.evaluateAll((es) => es.slice(0, 2).map((e) => e.getAttribute("transform")));
+  expect(after[0]).not.toBe(before[0]);
+  expect(after[1]).not.toBe(before[1]);
+});
+
+test("回転クラスターの矢印移動は親軸で動き、ドラッグもポインタに追従する", async ({ page }) => {
+  const cluster = await makeCluster(page);
+  const clusterId = await cluster.getAttribute("data-node-id");
+  await page.locator(`[data-tree-id="${clusterId}"]`).click();
+  await page.getByLabel("Rotation").fill("90");
+  await page.getByLabel("Rotation").dispatchEvent("change");
+  const key = page.locator('[data-node-type="key"]').first();
+  const beforeBox = await key.boundingBox();
+  const beforeTransform = await key.getAttribute("transform");
+  await key.click();
+  const pane = page.locator(".canvas-pane");
+  await pane.focus();
+  await page.keyboard.press("ArrowRight");
+  const afterBox = await key.boundingBox();
+  expect(afterBox!.y).toBeGreaterThan(beforeBox!.y + 4);
+  const dragBox = await key.boundingBox();
+  await page.mouse.move(dragBox!.x + dragBox!.width / 2, dragBox!.y + dragBox!.height / 2);
+  await page.mouse.down();
+  await page.mouse.move(dragBox!.x + dragBox!.width / 2 + 28, dragBox!.y + dragBox!.height / 2, { steps: 3 });
+  await page.mouse.up();
+  const dragAfterBox = await key.boundingBox();
+  expect(await key.getAttribute("transform")).not.toBe(beforeTransform);
+  expect(dragAfterBox!.x).toBeGreaterThan(dragBox!.x + 10);
+  expect(dragAfterBox!.y).toBeCloseTo(dragBox!.y, 0);
+});
+
+test("長押しでクラスターを選び、ダブルクリックでフォーカスしてEscで戻る", async ({ page }) => {
+  const cluster = await makeCluster(page);
+  const clusterId = await cluster.getAttribute("data-node-id");
+  const key = page.locator('[data-node-type="key"]').first();
+  const b = await key.boundingBox();
+  await page.mouse.move(b!.x + b!.width / 2, b!.y + b!.height / 2);
+  await page.mouse.down();
+  await expect(page.locator(".hold-row.active")).toContainText("Cluster", { timeout: 2000 });
+  await page.mouse.up();
+  await expect(page.locator(`[data-tree-id="${clusterId}"]`).first()).toHaveClass(/chosen/);
+  await page.locator(`[data-tree-id="${clusterId}"]`).first().click();
+  const keyBox = await key.boundingBox();
+  await page.mouse.dblclick(keyBox!.x + keyBox!.width / 2, keyBox!.y + keyBox!.height / 2, { delay: 80 });
+  await expect(page.getByRole("button", { name: "root", exact: true })).toBeVisible();
+  const pane = page.locator(".canvas-pane");
+  await pane.focus();
+  await page.keyboard.press("Escape");
+  await page.keyboard.press("Escape");
+  await expect(page.getByRole("button", { name: "root", exact: true })).toHaveCount(0);
+});
+
+test("入れ子の回転クラスターをフォーカスできる", async ({ page }) => {
+  const outer = await makeCluster(page);
+  const outerId = await outer.getAttribute("data-node-id");
+  const childIds = await outer
+    .locator('[data-node-type="key"]')
+    .evaluateAll((es) => es.map((e) => e.getAttribute("data-node-id")));
+  await page.getByText("キー・部品 2件", { exact: true }).click();
+  await page.locator(`[data-tree-id="${childIds[0]}"]`).first().click();
+  await page
+    .locator(`[data-tree-id="${childIds[1]}"]`)
+    .first()
+    .click({ modifiers: ["Shift"] });
+  await page.getByRole("button", { name: "クラスターにする" }).click();
+  const inner = outer.locator('[data-node-type="cluster"]').first();
+  const innerId = await inner.getAttribute("data-node-id");
+  await page.locator(`[data-tree-id="${outerId}"]`).first().click();
+  await page.getByLabel("Rotation").fill("35");
+  await page.getByLabel("Rotation").dispatchEvent("change");
+  const key = inner.locator('[data-node-type="key"]').first();
+  await expect(key).toBeVisible();
+  await page.locator(`[data-tree-id="${outerId}"]`).first().click();
+  await page.locator(".canvas-pane").focus();
+  await page.keyboard.press("Enter");
+  await expect(page.getByRole("button", { name: "root", exact: true })).toBeVisible();
+  await expect(page.locator(`[data-node-id="${childIds[0]}"]`).last()).toBeVisible();
+  const focusedKey = page.locator(`[data-node-id="${childIds[0]}"]`).last();
+  const focusedBox = await focusedKey.boundingBox();
+  await page.mouse.move(focusedBox!.x + focusedBox!.width / 2, focusedBox!.y + focusedBox!.height / 2);
+  await page.mouse.down();
+  await page.waitForTimeout(700);
+  await expect(page.locator(`[data-sel-id="${innerId}"].candidate`)).toBeVisible({
+    timeout: 1800,
+  });
+  await page.mouse.up();
+  await page.screenshot({ path: path.join(test.info().outputDir, "rotated-long-press-in-focus.png") });
+  const clickBox = await focusedKey.boundingBox();
+  await page.mouse.dblclick(clickBox!.x + clickBox!.width / 2, clickBox!.y + clickBox!.height / 2, {
+    delay: 80,
+  });
+  await expect(page.locator(`[data-node-id="${innerId}"]`)).toHaveCount(1);
+});
+
+test("選択枠は画面上で見え、バリアントバッジで表示を切り替えられる", async ({ page }) => {
+  test.setTimeout(60_000);
+  const keys = page.locator('[data-node-type="key"]');
+  await keys.first().click();
+  const outline = page.locator(".selection-layer .sel").first();
+  await expect(outline).toBeVisible();
+  expect(await outline.evaluate((e) => getComputedStyle(e).strokeWidth)).toBe("3.5px");
+  await keys.nth(1).click({ modifiers: ["Shift"] });
+  await page.getByRole("button", { name: "選択からバリアントグループ" }).click();
+  const group = page.locator('[data-node-type="variantGroup"]').first();
+  await page.getByLabel("Rotation").fill("35");
+  await page.getByLabel("Rotation").dispatchEvent("change");
+  const badge = page.locator(`[data-badge-id="${await group.first().getAttribute("data-node-id")}"]`);
+  await expect(badge).toBeVisible();
+  await badge.locator("rect").click();
+  await page
+    .locator(".popover")
+    .getByRole("button", { name: /Option B/ })
+    .click();
+  await expect(keys).toHaveCount(14);
+  await page.locator(".canvas-pane").focus();
+  await page.keyboard.press("Enter");
+  await expect(page.getByRole("button", { name: "root", exact: true })).toBeVisible();
+  await badge.locator("rect").click();
+  const focusedBadgeBox = await badge.boundingBox();
+  const focusedPopoverBox = await page.locator(".popover").boundingBox();
+  expect(
+    Math.hypot(focusedPopoverBox!.x - focusedBadgeBox!.x, focusedPopoverBox!.y - focusedBadgeBox!.y),
+  ).toBeLessThanOrEqual(80);
+  await page.screenshot({ path: path.join(test.info().outputDir, "rotated-badge-in-focus.png") });
+  await page
+    .locator(".popover")
+    .getByRole("button", { name: /Option A/ })
+    .click();
+  await expect(keys).toHaveCount(16);
+});
+
+test("クラスター内のキーから作ったバリアントグループはクラスターの中にでき、バッジは名前を書かない", async ({
+  page,
+}) => {
+  const cluster = await makeCluster(page);
+  const key = cluster.locator('[data-node-type="key"]').first();
+  await key.click();
+  await page.getByRole("button", { name: "選択からバリアントグループ" }).click();
+  const group = cluster.locator('[data-node-type="variantGroup"]');
+  await expect(group).toHaveCount(1);
+  const badge = page.locator(`[data-badge-id="${await group.first().getAttribute("data-node-id")}"]`);
+  await expect(badge.locator("text")).toHaveText("⇄");
+  await expect(badge.locator("title")).toHaveText("Variant Group: Option A(既定)");
+  // バッジはキーより後に描き、隣のキーの下に隠れない
+  const onTop = await badge.evaluate((element) => {
+    const keys = [...document.querySelectorAll('[data-node-type="key"]')];
+    const box = element.getBoundingClientRect();
+    const hit = document.elementFromPoint(box.x + box.width / 2, box.y + box.height / 2);
+    return [
+      keys.every((key) => key.compareDocumentPosition(element) & Node.DOCUMENT_POSITION_FOLLOWING),
+      element.contains(hit),
+    ];
+  });
+  expect(onTop).toEqual([true, true]);
+  await badge.locator("rect").click();
+  const popover = page.locator(".popover");
+  await expect(popover.getByRole("button", { name: /Option A/ }).locator(".default-tag")).toHaveText("既定");
+  await expect(popover.getByRole("button", { name: /Option B/ }).locator(".default-tag")).toHaveCount(0);
+  await popover.getByRole("button", { name: /Option B/ }).click();
+  await expect(badge.locator("title")).toHaveText("Variant Group: Option B");
+});
+
+test("削除確認は参照を列挙し、実行後はIDXからも消える", async ({ page }) => {
+  const key = page.locator('[data-node-type="key"]').first();
+  const id = await key.getAttribute("data-node-id");
+  await key.click();
+  await page.getByRole("button", { name: "削除", exact: true }).click();
+  const confirm = page.locator(".confirm-float");
+  await expect(confirm).toContainText("参照");
+  await expect(confirm).toContainText(id!);
+  await confirm.getByRole("button", { name: "削除", exact: true }).click();
+  await expect(page.locator(`[data-node-id="${id}"]`)).toHaveCount(0);
+  await page.getByRole("button", { name: "IDX", exact: true }).click();
+  await expect(page.locator(`[data-testid="idx-canvas"] [data-key-id="${id}"]`)).toHaveCount(0);
+  await expect(page.getByTestId("idx-register-all")).toBeDisabled();
+});
+
+test("コピー貼り付けはIDを変えて1刻みずらし、KLE貼り付けはキーを追加する", async ({ page }) => {
+  const key = page.locator('[data-node-type="key"]').first();
+  const id = await key.getAttribute("data-node-id");
+  const original = await key.getAttribute("transform");
+  await key.click();
+  const marker = await page.evaluate(() => {
+    const data = new DataTransfer();
+    window.dispatchEvent(
+      new ClipboardEvent("copy", { bubbles: true, cancelable: true, clipboardData: data }),
+    );
+    return data.getData("text/plain");
+  });
+  await page.evaluate((marker) => {
+    const data = new DataTransfer();
+    data.setData("text/plain", marker);
+    window.dispatchEvent(
+      new ClipboardEvent("paste", { bubbles: true, cancelable: true, clipboardData: data }),
+    );
+  }, marker);
+  await expect(page.locator('[data-node-type="key"]')).toHaveCount(17);
+  const pasted = page.locator('[data-node-type="key"]').last();
+  expect(await pasted.getAttribute("data-node-id")).not.toBe(id);
+  expect(await pasted.getAttribute("transform")).not.toBe(original);
+  await page.evaluate(() => {
+    const data = new DataTransfer();
+    data.setData("text/plain", JSON.stringify([["Pasted"]]));
+    window.dispatchEvent(
+      new ClipboardEvent("paste", { bubbles: true, cancelable: true, clipboardData: data }),
+    );
+  });
+  await expect(page.locator('[data-node-type="key"]')).toHaveCount(18);
+});
+
+test("カット貼り付けはIDとワールド位置を保つ", async ({ page }) => {
+  const key = page.locator('[data-node-type="key"]').first();
+  const id = await key.getAttribute("data-node-id");
+  const transform = await key.getAttribute("transform");
+  await key.click();
+  const marker = await page.evaluate(() => {
+    const data = new DataTransfer();
+    window.dispatchEvent(new ClipboardEvent("cut", { bubbles: true, cancelable: true, clipboardData: data }));
+    return data.getData("text/plain");
+  });
+  await expect(key).toHaveClass(/cut/);
+  await page.evaluate((value) => {
+    const data = new DataTransfer();
+    data.setData("text/plain", value);
+    window.dispatchEvent(
+      new ClipboardEvent("paste", { bubbles: true, cancelable: true, clipboardData: data }),
+    );
+  }, marker);
+  const cutKey = page.locator(`[data-node-id="${id}"]`);
+  await expect(cutKey).toHaveAttribute("transform", transform!);
+  await expect(page.locator('[data-node-type="key"]')).toHaveCount(16);
+});
+
+test("プロジェクト保存読み込みとKLEから60キー新規を往復する", async ({ page }) => {
+  await page.locator('[data-node-type="key"]').first().click();
+  await page.getByLabel("Width").fill("1.5");
+  await page.getByLabel("Width").dispatchEvent("change");
+  const [download] = await Promise.all([
+    page.waitForEvent("download"),
+    page.getByRole("button", { name: "プロジェクトを保存" }).click(),
+  ]);
+  const savePath = path.join(test.info().outputDir, "project.json");
+  await download.saveAs(savePath);
+  const saved = await readFile(savePath);
+  const chooser = page.waitForEvent("filechooser");
+  await page.getByRole("button", { name: "プロジェクトを開く" }).click();
+  await (
+    await chooser
+  ).setFiles({ name: "roundtrip.bkle.json", mimeType: "application/json", buffer: saved });
+  await expect(page.locator('[data-node-type="key"]')).toHaveCount(16);
+  await expect(page.locator('[data-node-type="key"] .key-face').first()).toHaveAttribute("width", "1.5");
+  const kle = await readFile(path.join(process.cwd(), "..", "samples", "kle", "cr0wn60.json"));
+  const kleChooser = page.waitForEvent("filechooser");
+  await page.getByRole("button", { name: "KLE JSONから新規" }).click();
+  await (await kleChooser).setFiles({ name: "cr0wn60.json", mimeType: "application/json", buffer: kle });
+  await expect(page.locator('[data-node-type="key"]')).toHaveCount(60);
+});
+
+test("unitSize不一致では追加と数値編集が無効", async ({ page }) => {
+  const [download] = await Promise.all([
+    page.waitForEvent("download"),
+    page.getByRole("button", { name: "プロジェクトを保存" }).click(),
+  ]);
+  const savePath = path.join(test.info().outputDir, "project.json");
+  await download.saveAs(savePath);
+  const source = JSON.parse(await readFile(savePath, "utf8"));
+  source.phy.profiles.push({
+    ...source.phy.profiles[0],
+    id: "alternate",
+    name: "Alternate",
+    unitSize: { x: 18, y: 18 },
+  });
+  const chooser = page.waitForEvent("filechooser");
+  await page.getByRole("button", { name: "プロジェクトを開く" }).click();
+  await (
+    await chooser
+  ).setFiles({
+    name: "unit-mismatch.bkle.json",
+    mimeType: "application/json",
+    buffer: Buffer.from(JSON.stringify(source)),
+  });
+  await expect(page.getByText("unitSize が一致しないため編集できません。")).toBeVisible();
+  await expect(page.getByRole("button", { name: "キーを足す" })).toBeDisabled();
+  await page.locator('[data-node-type="key"]').first().click();
+  await expect(page.getByLabel("Width")).toBeDisabled();
+  const before = await page.locator('[data-node-type="key"] .key-face').first().getAttribute("width");
+  await page.getByLabel("Width").evaluate((e: HTMLInputElement) => {
+    e.value = "2";
+    e.dispatchEvent(new Event("change", { bubbles: true }));
+  });
+  await expect(page.locator('[data-node-type="key"] .key-face').first()).toHaveAttribute("width", before!);
+});
+
+test("KLE読込直後に全体表示し、cr0wn60の全キーがキャンバス内に収まる", async ({ page }) => {
+  const kle = await readFile(path.join(process.cwd(), "..", "samples", "kle", "cr0wn60.json"));
+  const chooser = page.waitForEvent("filechooser");
+  await page.getByRole("button", { name: "KLE JSONから新規" }).click();
+  await (await chooser).setFiles({ name: "cr0wn60.json", mimeType: "application/json", buffer: kle });
+  await expect(page.locator('[data-node-type="key"]')).toHaveCount(60);
+  const canvas = await page.locator("svg.canvas").boundingBox();
+  const boxes = await page.locator('[data-node-type="key"]').evaluateAll((es) =>
+    es.map((e) => {
+      const r = e.getBoundingClientRect();
+      return { left: r.left, top: r.top, right: r.right, bottom: r.bottom };
+    }),
+  );
+  expect(canvas).not.toBeNull();
+  for (const b of boxes) {
+    expect(b.left).toBeGreaterThanOrEqual(canvas!.x);
+    expect(b.top).toBeGreaterThanOrEqual(canvas!.y);
+    expect(b.right).toBeLessThanOrEqual(canvas!.x + canvas!.width);
+    expect(b.bottom).toBeLessThanOrEqual(canvas!.y + canvas!.height);
+  }
+  await page.screenshot({ path: path.join(test.info().outputDir, "cr0wn60-fit.png") });
+});
+
+test("キャンバス上のShift選択で2件をクラスター化し、選択解除と親ドラッグを行う", async ({ page }) => {
+  const keys = page.locator('[data-node-type="key"]');
+  await keys.nth(0).click();
+  await keys.nth(1).click({ modifiers: ["Shift"] });
+  await expect(page.locator(".sel")).toHaveCount(2);
+  await page.locator(".canvas-pane").focus();
+  await page.keyboard.press("Control+g");
+  const cluster = page.locator('[data-node-type="cluster"]').first();
+  await expect(cluster.locator('[data-node-type="key"]')).toHaveCount(2);
+  const clusterBefore = await cluster.getAttribute("transform");
+  const childrenBefore = await cluster
+    .locator('[data-node-type="key"]')
+    .evaluateAll((es) => es.map((e) => e.getAttribute("transform")));
+  const key = cluster.locator('[data-node-type="key"]').first();
+  const b = await key.boundingBox();
+  await page.mouse.move(b!.x + b!.width / 2, b!.y + b!.height / 2);
+  await page.mouse.down();
+  await page.mouse.move(b!.x + b!.width / 2 + 28, b!.y + b!.height / 2 + 5, { steps: 3 });
+  await page.mouse.up();
+  await expect(cluster).not.toHaveAttribute("transform", clusterBefore!);
+  expect(
+    await cluster
+      .locator('[data-node-type="key"]')
+      .evaluateAll((es) => es.map((e) => e.getAttribute("transform"))),
+  ).toEqual(childrenBefore);
+  const third = keys.nth(3);
+  await third.click();
+  await third.click({ modifiers: ["Shift"] });
+  await expect(page.locator(".sel")).toHaveCount(0);
+});
+
+test("削除のキーボード確認とバリアントポップオーバーを対象の近くに置く", async ({ page }) => {
+  const key = page.locator('[data-node-type="key"]').first();
+  await key.click();
+  const keyBox = await key.boundingBox();
+  await page.locator(".canvas-pane").focus();
+  await page.keyboard.press("Delete");
+  const confirm = page.locator(".confirm-float");
+  const confirmBox = await confirm.boundingBox();
+  const pane = await page.locator(".canvas-pane").boundingBox();
+  expect(confirmBox!.width).toBeLessThanOrEqual(400);
+  expect(confirmBox!.x).toBeGreaterThanOrEqual(pane!.x);
+  expect(confirmBox!.y).toBeGreaterThanOrEqual(pane!.y);
+  expect(confirmBox!.x + confirmBox!.width).toBeLessThanOrEqual(pane!.x + pane!.width);
+  expect(confirmBox!.y + confirmBox!.height).toBeLessThanOrEqual(pane!.y + pane!.height);
+  const gapX = Math.max(
+    0,
+    confirmBox!.x - (keyBox!.x + keyBox!.width),
+    keyBox!.x - (confirmBox!.x + confirmBox!.width),
+  );
+  const gapY = Math.max(
+    0,
+    confirmBox!.y - (keyBox!.y + keyBox!.height),
+    keyBox!.y - (confirmBox!.y + confirmBox!.height),
+  );
+  expect(Math.hypot(gapX, gapY)).toBeLessThanOrEqual(150);
+  await page.screenshot({ path: path.join(test.info().outputDir, "delete-confirm.png") });
+  await page.keyboard.press("Escape");
+
+  await keysSelectVariantGroup(page);
+  const badge = page.locator(".badge-layer:not(.dim) .badge").first();
+  await badge.locator("rect").click();
+  const badgeBox = await badge.boundingBox();
+  const popoverBox = await page.locator(".popover").boundingBox();
+  expect(Math.hypot(popoverBox!.x - badgeBox!.x, popoverBox!.y - badgeBox!.y)).toBeLessThanOrEqual(80);
+  await page.screenshot({ path: path.join(test.info().outputDir, "variant-popover.png") });
+});
+
+async function keysSelectVariantGroup(page: import("@playwright/test").Page) {
+  const keys = page.locator('[data-node-type="key"]');
+  await keys.nth(0).click();
+  await keys.nth(1).click({ modifiers: ["Shift"] });
+  await page.getByRole("button", { name: "選択からバリアントグループ" }).click();
+}
+
+test("Alt+上矢印は選択を親へ上げ、フォーカス描画にID重複を作らない", async ({ page }) => {
+  const cluster = await makeCluster(page);
+  const clusterId = await cluster.getAttribute("data-node-id");
+  await page.locator(`[data-tree-id="${clusterId}"]`).click();
+  await page.getByLabel("Rotation").fill("35");
+  await page.getByLabel("Rotation").dispatchEvent("change");
+  const key = cluster.locator('[data-node-type="key"]').first();
+  const transform = await key.getAttribute("transform");
+  await key.click();
+  await page.locator(".canvas-pane").focus();
+  await page.keyboard.press("Alt+ArrowUp");
+  await expect(page.locator(`[data-tree-id="${clusterId}"]`).first()).toHaveClass(/chosen/);
+  await expect(key).toHaveAttribute("transform", transform!);
+  await page.keyboard.press("Enter");
+  const ids = await page
+    .locator("svg.canvas [data-node-id]")
+    .evaluateAll((es) => es.map((e) => e.getAttribute("data-node-id")));
+  expect(new Set(ids).size).toBe(ids.length);
+  await page.screenshot({ path: path.join(test.info().outputDir, "focus-mode.png") });
+  const pane = await page.locator("svg.canvas").boundingBox();
+  await page.mouse.click(pane!.x + 8, pane!.y + 8);
+  await expect(page.locator(".sel")).toHaveCount(0);
+});
+
+test("長押し候補は離すまで選択を変えず、離すとクラスターを選ぶ", async ({ page }) => {
+  const cluster = await makeCluster(page);
+  const clusterId = await cluster.getAttribute("data-node-id");
+  const keys = page.locator('[data-node-type="key"]');
+  await keys.nth(4).click();
+  await expect(
+    page.locator(`[data-sel-id="${await keys.nth(4).getAttribute("data-node-id")}"]`),
+  ).toBeVisible();
+  const b = await cluster.locator('[data-node-type="key"]').first().boundingBox();
+  await page.mouse.move(b!.x + b!.width / 2, b!.y + b!.height / 2);
+  await page.mouse.down();
+  await expect(page.locator(".hold-row.active")).toContainText("Cluster", { timeout: 1800 });
+  await expect(
+    page.locator(`[data-sel-id="${await keys.nth(4).getAttribute("data-node-id")}"]`),
+  ).toBeVisible();
+  await page.screenshot({ path: path.join(test.info().outputDir, "long-press-candidate.png") });
+  await page.mouse.up();
+  await expect(page.locator(`[data-tree-id="${clusterId}"]`).first()).toHaveClass(/chosen/);
+});
+
+test("リスト方式では、リストに入ると巡回が止まり、指した行で離すと確定する", async ({ page }) => {
+  const cluster = await makeCluster(page);
+  await page.getByRole("button", { name: "長押し: ループ" }).click();
+  await expect(page.getByRole("button", { name: "長押し: リスト" })).toBeVisible();
+  const key = cluster.locator('[data-node-type="key"]').first();
+  const keyId = await key.getAttribute("data-node-id");
+  const b = await key.boundingBox();
+  await page.mouse.move(b!.x + b!.width / 2, b!.y + b!.height / 2);
+  await page.mouse.down();
+  await expect(page.locator(".hold-row.active")).toContainText("Cluster", { timeout: 2000 });
+  const row = await page.locator(".hold-row", { hasText: "キー" }).boundingBox();
+  await page.mouse.move(row!.x + row!.width / 2, row!.y + row!.height / 2, { steps: 5 });
+  await expect(page.locator(".hold-row.active")).toHaveText("キー");
+  await expect(page.locator(".hold-ring")).toHaveCount(0);
+  await page.waitForTimeout(1200);
+  await expect(page.locator(".hold-row.active")).toHaveText("キー");
+  await page.mouse.up();
+  await expect(page.locator(".hold-list")).toHaveCount(0);
+  await expect(page.locator(`[data-sel-id="${keyId}"]`)).toBeVisible();
+  // リストへ動かしてもキーはドラッグされない
+  expect(await key.boundingBox()).toEqual(b);
+});
+
+test("ループ方式では、長押しのあと動かすと選んだ先をドラッグする", async ({ page }) => {
+  const cluster = await makeCluster(page);
+  const clusterId = await cluster.getAttribute("data-node-id");
+  const keys = cluster.locator('[data-node-type="key"]');
+  const before = await keys.nth(1).boundingBox();
+  const b = (await keys.first().boundingBox())!;
+  await page.mouse.move(b.x + b.width / 2, b.y + b.height / 2);
+  await page.mouse.down();
+  await expect(page.locator(".hold-ring")).toBeVisible({ timeout: 2000 });
+  await page.mouse.move(b.x + b.width / 2 + 80, b.y + b.height / 2, { steps: 5 });
+  await expect(page.locator(".hold-list")).toHaveCount(0);
+  await page.mouse.up();
+  await expect(page.locator(`[data-tree-id="${clusterId}"]`).first()).toHaveClass(/chosen/);
+  // クラスターごと動くので、押していないキーも動く
+  expect((await keys.nth(1).boundingBox())!.x).toBeGreaterThan(before!.x + 40);
+});
+
+test("「その他」の部品はpartGroupを設定せず、選択後は追加メニューを戻す", async ({ page }) => {
+  const select = page.getByRole("combobox", { name: "部品を足す" });
+  await select.selectOption("その他");
+  await expect(select).toHaveValue("");
+  await expect(page.locator('[data-node-type="component"] .part-label').last()).toHaveText("part");
+});
+
+test("クラスター内でキーを足すと、足したキーを選ぶ", async ({ page }) => {
+  const cluster = await makeCluster(page);
+  const clusterKeys = cluster.locator('[data-node-type="key"]');
+  const before = await clusterKeys.evaluateAll((es) => es.map((e) => e.getAttribute("data-node-id")));
+  await page.getByText("キー・部品 2件", { exact: true }).click();
+  await page.locator(`[data-tree-id="${before[0]}"]`).first().click();
+  await page.getByRole("button", { name: "キーを足す" }).click();
+  await expect(clusterKeys).toHaveCount(3);
+  const after = await clusterKeys.evaluateAll((es) => es.map((e) => e.getAttribute("data-node-id")));
+  const added = after.find((id) => !before.includes(id));
+  await expect(page.locator(`[data-sel-id="${added}"]`)).toHaveCount(1);
+  await expect(page.locator("[data-sel-id]")).toHaveCount(1);
+});
+
+test("クラスターを選んでキーを足すと、そのクラスターに新しい行を作る", async ({ page }) => {
+  const cluster = await makeCluster(page);
+  const clusterId = await cluster.getAttribute("data-node-id");
+  await page.locator(`[data-tree-id="${clusterId}"]`).first().click();
+  const clusterKeys = cluster.locator('[data-node-type="key"]');
+  const before = await clusterKeys.evaluateAll((es) => es.map((e) => e.getAttribute("data-node-id")));
+  const boxes = await Promise.all(before.map((id) => page.locator(`[data-node-id="${id}"]`).boundingBox()));
+  await page.getByRole("button", { name: "キーを足す" }).click();
+  await expect(clusterKeys).toHaveCount(3);
+  const after = await clusterKeys.evaluateAll((es) => es.map((e) => e.getAttribute("data-node-id")));
+  const added = after.find((id) => !before.includes(id));
+  await expect(page.locator(`[data-sel-id="${added}"]`)).toHaveCount(1);
+  const box = (await page.locator(`[data-node-id="${added}"]`).boundingBox())!;
+  // The cluster holds two keys of the first row, 1U apart; the new row starts 1U below its left end.
+  const [left, right] = [...boxes].sort((a, b) => a!.x - b!.x);
+  const unit = right!.x - left!.x;
+  expect(Math.abs(box.x - left!.x)).toBeLessThan(1);
+  expect(Math.abs(box.y - (left!.y + unit))).toBeLessThan(1);
+});
+
+test("バリアントグループを選んでキーを足すと、表示中のバリアントに新しい行を作る", async ({ page }) => {
+  await keysSelectVariantGroup(page);
+  const group = page.locator('[data-node-type="variantGroup"]').first();
+  const groupId = await group.getAttribute("data-node-id");
+  await page.locator(`[data-tree-id="${groupId}"]`).first().click();
+  const groupKeys = group.locator('[data-node-type="key"]');
+  const before = await groupKeys.evaluateAll((es) => es.map((e) => e.getAttribute("data-node-id")));
+  const boxes = await Promise.all(before.map((id) => page.locator(`[data-node-id="${id}"]`).boundingBox()));
+  await page.getByRole("button", { name: "キーを足す" }).click();
+  await expect(groupKeys).toHaveCount(before.length + 1);
+  const after = await groupKeys.evaluateAll((es) => es.map((e) => e.getAttribute("data-node-id")));
+  const added = after.find((id) => !before.includes(id));
+  await expect(page.locator(`[data-sel-id="${added}"]`)).toHaveCount(1);
+  const box = (await page.locator(`[data-node-id="${added}"]`).boundingBox())!;
+  // The variant holds two keys of the first row, 1U apart; the new row starts 1U below its left end.
+  const [left, right] = [...boxes].sort((a, b) => a!.x - b!.x);
+  const unit = right!.x - left!.x;
+  expect(Math.abs(box.x - left!.x)).toBeLessThan(1);
+  expect(Math.abs(box.y - (left!.y + unit))).toBeLessThan(1);
+});
+
+test("キャンバスのviewBoxはツールバーを除いたSVGの大きさに合う", async ({ page }) => {
+  const canvas = page.locator("svg.canvas");
+  const box = (await canvas.boundingBox())!;
+  const [, , w, h] = (await canvas.getAttribute("viewBox"))!.split(" ").map(Number);
+  expect(Math.abs(w! - box.width)).toBeLessThan(1);
+  expect(Math.abs(h! - box.height)).toBeLessThan(1);
+});
+
+test("スイッチ・スタビの十字はトグルで出し、スタビ候補を複数選べる", async ({ page }) => {
+  const key = page.locator('[data-node-type="key"]').first();
+  const id = await key.getAttribute("data-node-id");
+  await expect(page.locator(".mount-layer")).toHaveCount(0);
+  await page.getByRole("button", { name: "スイッチ・スタビライザーの位置" }).click();
+  const mark = page.locator(`[data-mount-id="${id}"]`);
+  await expect(mark.locator(".switch")).toHaveCount(1);
+  await expect(mark.locator(".stab")).toHaveCount(0);
+
+  await key.click();
+  await expect(page.locator(".stabilizers")).toContainText("候補なし");
+  await page.getByLabel("Width").fill("6.25");
+  await page.getByLabel("Width").blur();
+  for (const label of ["±50mm", "±40mm", "±42.5mm"]) await expect(page.getByLabel(label)).not.toBeChecked();
+  await page.getByLabel("±50mm").check();
+  await page.getByLabel("±40mm").check();
+  await expect(mark.locator(".stab")).toHaveCount(4);
+
+  const switchX = async () => (await mark.locator(".switch").boundingBox())!.x;
+  const before = await switchX();
+  await page.getByLabel("switchOffset X").fill("0.625");
+  await page.getByLabel("switchOffset X").dispatchEvent("change");
+  await expect.poll(switchX).toBeGreaterThan(before + 10);
+  await expect(mark.locator(".stab")).toHaveCount(4);
+
+  await page.getByRole("button", { name: "Undo" }).click();
+  await page.getByRole("button", { name: "Undo" }).click();
+  await expect(mark.locator(".stab")).toHaveCount(2);
+  await expect(page.getByLabel("±40mm")).not.toBeChecked();
+
+  await page.getByRole("button", { name: "スイッチ・スタビライザーの位置" }).click();
+  await expect(page.locator(".mount-layer")).toHaveCount(0);
+});
+
+test("ISO Enterを足すと外形で描き、プロパティの異形キーで2つ目の矩形を出し入れできる", async ({ page }) => {
+  const keys = page.locator('[data-node-type="key"]');
+  await keys.first().click();
+  const select = page.getByRole("combobox", { name: "異形キーを足す" });
+  await select.selectOption("ISO Enter");
+  await expect(select).toHaveValue("");
+  await expect(keys).toHaveCount(17);
+  const added = keys.last();
+  const addedId = await added.getAttribute("data-node-id");
+  await expect(added.locator("path.key-face")).toHaveCount(1);
+  await expect(page.locator(`path[data-sel-id="${addedId}"]`)).toHaveCount(1);
+  const irregular = page.getByLabel("異形キー", { exact: true });
+  await expect(irregular).toBeChecked();
+  await expect(page.getByLabel("X2", { exact: true })).toHaveValue("-0.25");
+  await expect(page.getByLabel("Width2", { exact: true })).toHaveValue("1.5");
+
+  await page.getByLabel("Width2", { exact: true }).fill("2");
+  await page.getByLabel("Width2", { exact: true }).press("Enter");
+  await expect(page.getByLabel("Width2", { exact: true })).toHaveValue("2");
+
+  await irregular.uncheck();
+  await expect(added.locator("rect.key-face")).toHaveAttribute("width", "1.25");
+  await expect(page.getByLabel("X2", { exact: true })).toHaveCount(0);
+  await irregular.check();
+  await expect(page.getByLabel("X2", { exact: true })).toHaveValue("0");
+  await expect(page.getByLabel("Width2", { exact: true })).toHaveValue("1.25");
+});

mock/index.html

@@ -0,0 +1,5 @@
+<!doctype html>
+<html lang="ja">
+  <head><meta charset="UTF-8" /><title>Beyond KLE Mock</title></head>
+  <body><div id="app"></div><script type="module" src="/src/main.ts"></script></body>
+</html>

mock/package.json

@@ -0,0 +1,28 @@
+{
+  "name": "beyond-kle-mock",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vue-tsc --noEmit && vite build",
+    "typecheck": "vue-tsc --noEmit",
+    "test": "vitest run",
+    "e2e": "playwright test"
+  },
+  "dependencies": {
+    "ajv": "^8.20.0",
+    "ajv-formats": "^3.0.1",
+    "vue": "^3.5.43"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.63.0",
+    "@types/node": "^26.6.2",
+    "@vitejs/plugin-vue": "^6.0.9",
+    "prettier": "^3.9.9",
+    "typescript": "^6.0.3",
+    "vite": "^8.3.1",
+    "vitest": "^5.0.1",
+    "vue-tsc": "^3.3.11"
+  }
+}

mock/playwright.config.ts

@@ -0,0 +1,11 @@
+import { defineConfig } from "@playwright/test";
+
+export default defineConfig({
+  testDir: "./e2e",
+  use: { browserName: "chromium", headless: true, baseURL: "http://127.0.0.1:5173" },
+  webServer: {
+    command: "npx vite --host 127.0.0.1",
+    url: "http://127.0.0.1:5173",
+    reuseExistingServer: !process.env.CI,
+  },
+});

mock/pnpm-lock.yaml

@@ -0,0 +1,991 @@
+lockfileVersion: '9.0'
+
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false
+
+importers:
+
+  .:
+    dependencies:
+      ajv:
+        specifier: ^8.20.0
+        version: 8.20.0
+      ajv-formats:
+        specifier: ^3.0.1
+        version: 3.0.1(ajv@8.20.0)
+      vue:
+        specifier: ^3.5.43
+        version: 3.5.43(typescript@6.0.3)
+    devDependencies:
+      '@playwright/test':
+        specifier: ^1.63.0
+        version: 1.63.0
+      '@types/node':
+        specifier: ^26.6.2
+        version: 26.6.2
+      '@vitejs/plugin-vue':
+        specifier: ^6.0.9
+        version: 6.0.9(vite@8.3.1(@types/node@26.6.2))(vue@3.5.43(typescript@6.0.3))
+      prettier:
+        specifier: ^3.9.9
+        version: 3.9.9
+      typescript:
+        specifier: ^6.0.3
+        version: 6.0.3
+      vite:
+        specifier: ^8.3.1
+        version: 8.3.1(@types/node@26.6.2)
+      vitest:
+        specifier: ^5.0.1
+        version: 5.0.1(@types/node@26.6.2)(vite@8.3.1(@types/node@26.6.2))
+      vue-tsc:
+        specifier: ^3.3.11
+        version: 3.3.11(typescript@6.0.3)
+
+packages:
+
+  '@babel/helper-string-parser@7.29.7':
+    resolution: {integrity: sha512-Pb5ijPrZ89GDH8223L4UP8i6QApWxs04RbPQJTeWDV0/keR2E36MeKnyr6LYmUUvqRRI+Iv87SuF1W6ErINzYw==}
+    engines: {node: '>=6.9.0'}
+
+  '@babel/helper-validator-identifier@7.29.7':
+    resolution: {integrity: sha512-qehxGkRj55h/ff8EMaJ+cYhyaKlHIxqYDn682wQD7RNp9UujOQsHog2uS0r2vzr4pW+sXf90NeeayjcNaX3fFg==}
+    engines: {node: '>=6.9.0'}
+
+  '@babel/parser@7.29.9':
+    resolution: {integrity: sha512-CjXrNHTnvqBVqHgdBysY3vk2T8tpJHb5/RMeHJBTyVa9xgugCB0CJTx/3oO8RV2QRQP391RWpB7D6hLjm8V9uA==}
+    engines: {node: '>=6.0.0'}
+    hasBin: true
+
+  '@babel/types@7.29.8':
+    resolution: {integrity: sha512-Vj1jF3cPfxg7OAfoI7QnVKLoILlm2JF9pnVHrX8qx7AHMiYWT+NDAA7jChlNgRS4WTLc/fD1lXLmPixluj+3Gg==}
+    engines: {node: '>=6.9.0'}
+
+  '@jridgewell/resolve-uri@3.1.2':
+    resolution: {integrity: sha512-bRISgCIjP20/tbWSPWMEi54QVPRZExkuD9lJL+UIxUKtwVJA8wW1Trb1jMs1RFXo1CBTNZ/5hpC9QvmKWdopKw==}
+    engines: {node: '>=6.0.0'}
+
+  '@jridgewell/sourcemap-codec@1.6.0':
+    resolution: {integrity: sha512-T7jf+5zgsZHwNJ4lvQ7/aezbyk0nNX+zJVWpmHA7VYsEx7a7qr5Rg5IbtJFqkgze5Y2sruq1RUY8Q837Od7iFw==}
+
+  '@jridgewell/trace-mapping@0.3.31':
+    resolution: {integrity: sha512-zzNR+SdQSDJzc8joaeP8QQoCQr8NuYx2dIIytl1QeBEZHJ9uW6hebsrYgbz8hJwUQao3TWCMtmfV8Nu1twOLAw==}
+
+  '@oxc-project/types@0.151.0':
+    resolution: {integrity: sha512-J1yXrIlNDZVzE3ada310xeAw7nH8yCAyLPuUIsjKatFPmfn5bS1oW+cM+QsGOtVWd5nhSpbwZWx/rue+r5Z+PA==}
+
+  '@playwright/test@1.63.0':
+    resolution: {integrity: sha512-oxMK4vllB9RK5NQ2l1pq1IfOf2AvnEuj/vYGDj0H2nMtmtZpKtCwt/l00GEO6xjGfpBNAvjovvYdCm50dRQkpQ==}
+    engines: {node: '>=20'}
+    hasBin: true
+
+  '@rolldown/binding-android-arm-eabi@1.2.11':
+    resolution: {integrity: sha512-A5kXfGKvKWWZE0TtPrfsvT+q4Y5d1QG8gGUzpYjGydM+fARM9MuX90PrXYXe0XbsDVgyxxNzHo6giCj90bsFNw==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    cpu: [arm]
+    os: [android]
+
+  '@rolldown/binding-android-arm64@1.2.11':
+    resolution: {integrity: sha512-z6cTycz+iJ4PVkuL4HHW4DfTfoeU/2nqYYuSOrTmH7yHK5Y0LCOnA03V4ZNxavyVaU1oOqUgIg2klN/s+USGOA==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    cpu: [arm64]
+    os: [android]
+
+  '@rolldown/binding-darwin-arm64@1.2.11':
+    resolution: {integrity: sha512-jShvqNtP6vDC6/A5JOAzbVV+DkgHqhl/ScVCJEbt+TUY6QYz7YnXcrg3sLtFBniro0f/Ld50ZwCWA6f7KYD1nQ==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    cpu: [arm64]
+    os: [darwin]
+
+  '@rolldown/binding-darwin-x64@1.2.11':
+    resolution: {integrity: sha512-f2i2xiNWq1Z1l2++q2fuhZRdLAT3aqxD6vRNm1RAxpUoBcdqNB3C0s1Bt+K+PbEx2F5F4gQp6hqKkphCY/xF9w==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    cpu: [x64]
+    os: [darwin]
+
+  '@rolldown/binding-freebsd-x64@1.2.11':
+    resolution: {integrity: sha512-4Ir5FSOKIAMr4r0kExpt1s3bMgzJU3rA45AYOHtQpls0oNeqcYBKrWMlckrYH4KCfGLfkfn1tN1dmZPMVsdXow==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    cpu: [x64]
+    os: [freebsd]
+
+  '@rolldown/binding-linux-arm-gnueabihf@1.2.11':
+    resolution: {integrity: sha512-/gnRDM+39BROzAN/k1OZjDPnDMcZxB/0EUxKjONO5yVkNEvlsoMDrxGNKgZi/ttFriS2gwlDNzB65pvNbFOXIQ==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    cpu: [arm]
+    os: [linux]
+
+  '@rolldown/binding-linux-arm64-gnu@1.2.11':
+    resolution: {integrity: sha512-PFaK8HwvAHbaKbBcDNQihjMKYvFnA5hiENx/l5tphTDz1E0WFp32l0A7aq7lyUwGsRw/xSrNIy/gIK4thrSCrw==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    cpu: [arm64]
+    os: [linux]
+
+  '@rolldown/binding-linux-arm64-musl@1.2.11':
+    resolution: {integrity: sha512-AskzJUIKRLPxkruR1wLKewGbOw+EYfU/9lOrBFj4AFrEA8hPpKFnODWNu2WLaNs0QNkEb9QIJufmVZZIL/bJlg==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    cpu: [arm64]
+    os: [linux]
+
+  '@rolldown/binding-linux-ppc64-gnu@1.2.11':
+    resolution: {integrity: sha512-qlUGAheh2yh8afH7QBgx0PrRHN85hKnNd78x8MeMhXivuevgd8vgf6/CstOzmNKY/lLTHvNTrPy98cLnAugzJw==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    cpu: [ppc64]
+    os: [linux]
+
+  '@rolldown/binding-linux-s390x-gnu@1.2.11':
+    resolution: {integrity: sha512-secpEad+0vCbSfn8upFySkDskv+bGPk3THSDS9Y89yc4rb4kzqHp8Dmyd9BkQW4SnhNXBZCl/6CrO//hZahNJQ==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    cpu: [s390x]
+    os: [linux]
+
+  '@rolldown/binding-linux-x64-gnu@1.2.11':
+    resolution: {integrity: sha512-mOVBT3dPpkWm8XBWPmU4bf+U6dYDLeMo/9ojUmis4N0L5uu10qra5vOyngZ7/PSdoE4G9KvRt4bloRxNjLas7A==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    cpu: [x64]
+    os: [linux]
+
+  '@rolldown/binding-linux-x64-musl@1.2.11':
+    resolution: {integrity: sha512-Is78i9A8Ui4SqcxUwFJ9uMmjDn58IbVTjFWYdQestFEgeuEmHMLGNriXnVJKkwG2YiZjw8cP0zCTyDMdDGtOOg==}
+    engines: {node: ^20.19.0 || >=22.12.0}
+    cpu: [x64]
+    os: [linux]
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mock/src/domain/deleteCascade.ts

@@ -0,0 +1,129 @@
+import type { ProjectFile } from "./project";
+import type { Node, Variant, VariantGroupNode } from "./phy";
+
+export type CascadeReference = { layer: "idx" | "elc" | "map" | "ledChains"; location: string; id: string };
+type DeleteTarget =
+  { kind: "node"; node: Node } | { kind: "variant"; variant: Variant; group: VariantGroupNode };
+
+function descendants(node: Node | Variant): string[] {
+  const ids = [node.id];
+  if (node.type === "cluster") node.children.forEach((child) => ids.push(...descendants(child)));
+  if (node.type === "variantGroup") for (const variant of node.children) ids.push(...descendants(variant));
+  if (node.type === "variant") node.children.forEach((child) => ids.push(...descendants(child)));
+  return ids;
+}
+
+/** Lists all saved references to a PHY node, Variant, and its descendants. T-15. */
+export function listDeleteReferences(p: ProjectFile, nodeId: string): CascadeReference[] {
+  const target = findTarget(p.phy.root, nodeId);
+  if (!target) throw new Error(`Unknown node: ${nodeId}`);
+  const ids = new Set(descendants(target.kind === "node" ? target.node : target.variant));
+  const out: CascadeReference[] = [];
+  p.idx.order.forEach((id) => {
+    if (ids.has(id)) out.push({ layer: "idx", location: "/idx/order", id });
+  });
+  p.elc.keys.forEach((w, i) => {
+    if (ids.has(w.key)) out.push({ layer: "elc", location: `/elc/keys/${i}`, id: w.key });
+  });
+  p.elc.ledChains?.forEach((chain) =>
+    chain.order.forEach((id) => {
+      if (ids.has(id)) out.push({ layer: "ledChains", location: `/elc/ledChains/${chain.id}`, id });
+    }),
+  );
+  p.map.layers.forEach((layer) =>
+    layer.keymap.forEach((assignment) => {
+      if (ids.has(assignment.keyId))
+        out.push({ layer: "map", location: `/map/layers/${layer.name}`, id: assignment.keyId });
+    }),
+  );
+  return out;
+}
+
+/** Removes a PHY node or Variant and its references in one immutable project result. T-15. */
+export function deleteNodeCascade(p: ProjectFile, nodeId: string): ProjectFile {
+  const o = structuredClone(p);
+  const target = findTarget(o.phy.root, nodeId);
+  if (!target) throw new Error(`Unknown node: ${nodeId}`);
+  const deletedIds = new Set(descendants(target.kind === "node" ? target.node : target.variant));
+  removeTarget(o.phy.root, target);
+
+  o.idx.order = o.idx.order.filter((id) => !deletedIds.has(id));
+  o.elc.keys = o.elc.keys.filter((w) => !deletedIds.has(w.key));
+  if (o.elc.ledChains)
+    o.elc.ledChains = o.elc.ledChains.map((chain) => ({
+      ...chain,
+      order: chain.order.filter((id) => !deletedIds.has(id)),
+    }));
+  o.map.layers = o.map.layers.map((layer) => ({
+    ...layer,
+    keymap: layer.keymap.filter((assignment) => !deletedIds.has(assignment.keyId)),
+  }));
+
+  if (target.kind === "variant") {
+    if (target.group.default === nodeId) target.group.default = target.group.children[0]!.id;
+    if (o.output.variantSelection[target.group.id] === nodeId)
+      o.output.variantSelection[target.group.id] = target.group.default;
+  }
+  pruneVariantSelection(o);
+  return o;
+}
+
+function findTarget(nodes: Node[], id: string): DeleteTarget | undefined {
+  for (const node of nodes) {
+    if (node.id === id) return { kind: "node", node };
+    if (node.type === "cluster") {
+      const found = findTarget(node.children, id);
+      if (found) return found;
+    }
+    if (node.type === "variantGroup")
+      for (const variant of node.children) {
+        if (variant.id === id) return { kind: "variant", variant, group: node };
+        const found = findTarget(variant.children, id);
+        if (found) return found;
+      }
+  }
+  return undefined;
+}
+
+function removeTarget(nodes: Node[], target: DeleteTarget): void {
+  const id = target.kind === "node" ? target.node.id : target.variant.id;
+  if (target.kind === "variant") {
+    const { group, variant } = target;
+    if (group.children.length <= 2)
+      throw new Error("Cannot delete a variant leaving fewer than two variants");
+    group.children.splice(group.children.indexOf(variant), 1);
+    if (group.default === id) group.default = group.children[0]!.id;
+    return;
+  }
+  const index = nodes.findIndex((node) => node.id === id);
+  if (index >= 0) {
+    nodes.splice(index, 1);
+    return;
+  }
+  for (const node of nodes) {
+    if (node.type === "cluster") removeTarget(node.children, target);
+    if (node.type === "variantGroup")
+      for (const variant of node.children) removeTarget(variant.children, target);
+  }
+}
+
+function pruneVariantSelection(project: ProjectFile): void {
+  const valid = new Map<string, { ids: Set<string>; defaultId: string }>();
+  const walk = (nodes: Node[]) =>
+    nodes.forEach((node) => {
+      if (node.type === "cluster") walk(node.children);
+      if (node.type === "variantGroup") {
+        valid.set(node.id, {
+          ids: new Set(node.children.map((variant) => variant.id)),
+          defaultId: node.default,
+        });
+        node.children.forEach((variant) => walk(variant.children));
+      }
+    });
+  walk(project.phy.root);
+  for (const [groupId, variantId] of Object.entries(project.output.variantSelection)) {
+    const group = valid.get(groupId);
+    if (!group) delete project.output.variantSelection[groupId];
+    else if (!group.ids.has(variantId)) project.output.variantSelection[groupId] = group.defaultId;
+  }
+}

mock/src/domain/elc.ts

@@ -0,0 +1,131 @@
+import type { PhyReference } from "./idx";
+export type PinRef = string;
+export type McuProvider = { id: string; kind: "mcu"; part: string; [key: string]: unknown };
+export type AnalogMuxProvider = {
+  id: string;
+  kind: "analog-mux";
+  channels: number;
+  select: PinRef[];
+  common: PinRef;
+  enable?: PinRef;
+  [key: string]: unknown;
+};
+export type ContactWiring = {
+  key: string;
+  detect: "contact";
+  terminals: { a: PinRef; b: PinRef };
+  diode?: "a-to-b" | "b-to-a";
+  [key: string]: unknown;
+};
+export type AnalogWiring = {
+  key: string;
+  detect: "analog";
+  terminals: { out: PinRef; vcc: PinRef; gnd: PinRef };
+  [key: string]: unknown;
+};
+export type KeyWiring = ContactWiring | AnalogWiring;
+export type LedChain = { id: string; data: PinRef; order: string[]; [key: string]: unknown };
+export type ElcFile = {
+  version: string;
+  phyReference: PhyReference;
+  providers: (McuProvider | AnalogMuxProvider)[];
+  keys: KeyWiring[];
+  ledChains?: LedChain[];
+  [key: string]: unknown;
+};
+/** Returns RP2040 GPIO pin suggestions, or no fixed list for unknown parts. T-26. */
+export function mcuPinCandidates(provider: McuProvider): string[] {
+  return provider.part.toUpperCase() === "RP2040" ? Array.from({ length: 30 }, (_, i) => `GP${i}`) : [];
+}
+/** Creates an empty ELC file. */
+export function createElc(ref: PhyReference): ElcFile {
+  return { version: "0.1.0", phyReference: structuredClone(ref), providers: [], keys: [], ledChains: [] };
+}
+/** Adds or replaces provider settings, rejecting IDs that conflict with PinRef syntax. T-26. */
+export function setProvider(elc: ElcFile, p: McuProvider | AnalogMuxProvider): ElcFile {
+  if (!p.id || p.id.includes(".")) throw new Error("Provider ID must be nonempty and cannot contain '.'");
+  const o = structuredClone(elc);
+  const i = o.providers.findIndex((x) => x.id === p.id);
+  if (i < 0) o.providers.push(structuredClone(p));
+  else {
+    const old = o.providers[i]!;
+    const known = new Set(["id", "kind", "part", "channels", "select", "common", "enable"]);
+    const extensions = Object.fromEntries(Object.entries(old).filter(([key]) => !known.has(key)));
+    o.providers[i] = { ...extensions, ...(old.kind === p.kind ? old : {}), ...p } as
+      McuProvider | AnalogMuxProvider;
+  }
+  return o;
+}
+/** Removes a provider and its dependent references. */
+export function removeProvider(elc: ElcFile, id: string): ElcFile {
+  const o = structuredClone(elc),
+    removed = new Set([id]);
+  let changed = true;
+  while (changed) {
+    changed = false;
+    for (const p of o.providers)
+      if (p.kind === "analog-mux" && !removed.has(p.id)) {
+        const refs = [...p.select, p.common, ...(p.enable ? [p.enable] : [])];
+        if (refs.some((ref) => [...removed].some((owner) => ref.startsWith(owner + ".")))) {
+          removed.add(p.id);
+          changed = true;
+        }
+      }
+  }
+  const pin = (s: string) => [...removed].some((owner) => s.startsWith(owner + "."));
+  o.providers = o.providers.filter((p) => !removed.has(p.id));
+  o.keys = o.keys.filter((k) => !Object.values(k.terminals).some((v) => pin(v)));
+  if (o.ledChains) o.ledChains = o.ledChains.filter((c) => !pin(c.data));
+  return o;
+}
+/** Adds or edits terminal and diode configuration for a key. */
+export function setKeyWiring(elc: ElcFile, w: KeyWiring): ElcFile {
+  const o = structuredClone(elc);
+  const i = o.keys.findIndex((x) => x.key === w.key);
+  if (i < 0) o.keys.push(structuredClone(w));
+  else {
+    const old = o.keys[i]!;
+    const known = new Set(["key", "detect", "terminals", "diode"]);
+    const extensions = Object.fromEntries(Object.entries(old).filter(([key]) => !known.has(key)));
+    const knownTerminals = old.detect === "contact" ? new Set(["a", "b"]) : new Set(["out", "vcc", "gnd"]);
+    const terminalExtensions = Object.fromEntries(
+      Object.entries(old.terminals).filter(([key]) => !knownTerminals.has(key)),
+    );
+    const updated = {
+      ...extensions,
+      ...(old.detect === w.detect ? old : {}),
+      ...w,
+      terminals: { ...terminalExtensions, ...(old.detect === w.detect ? old.terminals : {}), ...w.terminals },
+    } as KeyWiring;
+    if (w.detect === "contact" && w.diode === undefined) delete (updated as ContactWiring).diode;
+    o.keys[i] = updated;
+  }
+  return o;
+}
+/** Removes wiring for a key. */
+export function removeKeyWiring(elc: ElcFile, keyId: string): ElcFile {
+  const o = structuredClone(elc);
+  o.keys = o.keys.filter((x) => x.key !== keyId);
+  return o;
+}
+/** Returns keys without any ELC entry. */
+export function unwiredKeys(keyIds: string[], elc: ElcFile): string[] {
+  const wired = new Set(elc.keys.map((k) => k.key));
+  return keyIds.filter((k) => !wired.has(k));
+}
+/** Creates an LED chain with an independent ordered node list. T-11. */
+export function createLedChain(elc: ElcFile, id: string, data: PinRef): ElcFile {
+  const o = structuredClone(elc);
+  o.ledChains ??= [];
+  if (o.ledChains.some((c) => c.id === id)) throw new Error("Duplicate LED chain ID");
+  o.ledChains.push({ id, data, order: [] });
+  return o;
+}
+/** Replaces LED order while preserving the chain's other fields. */
+export function setLedOrder(elc: ElcFile, id: string, order: string[]): ElcFile {
+  const o = structuredClone(elc);
+  const c = o.ledChains?.find((x) => x.id === id);
+  if (!c) throw new Error("Unknown LED chain");
+  c.order = [...order];
+  return o;
+}

mock/src/domain/elcMatrix.ts

@@ -0,0 +1,26 @@
+import { setKeyWiring, type ContactWiring, type ElcFile } from "./elc";
+
+/** Assigns a row-major matrix to the supplied keys. The input order is preserved. */
+export function wireMatrixKeys(
+  elc: ElcFile,
+  keyIds: string[],
+  rowPins: string[],
+  colPins: string[],
+  diode?: "a-to-b" | "b-to-a",
+): ElcFile {
+  if (!rowPins.length || !colPins.length) throw new Error("rowPins and colPins are required");
+  if (keyIds.length > rowPins.length * colPins.length)
+    throw new Error("Matrix does not have enough row/column positions");
+  let next = elc;
+  keyIds.forEach((key, i) => {
+    const wiring: ContactWiring = {
+      key,
+      detect: "contact",
+      terminals: { a: rowPins[Math.floor(i / colPins.length)]!, b: colPins[i % colPins.length]! },
+      ...(diode ? { diode } : {}),
+    };
+    // Keep unknown extension fields on an existing ELC entry, just like normal edits.
+    next = setKeyWiring(next, wiring);
+  });
+  return next;
+}

mock/src/domain/generator.ts

@@ -0,0 +1,102 @@
+import type { ProjectFile } from "./project";
+import { flattenKeys } from "./geometry";
+import { validateProject, type ValidationIssue } from "./validate";
+export type MockTarget = {
+  format: "mock-target";
+  version: "0.1.0";
+  layout: Array<{ keyId: string; x: number; y: number; rotation: number; w: number; h: number }>;
+  idx: string[];
+  matrix: { rowPins: string[]; colPins: string[]; rows: number[]; cols: number[] };
+  keymaps: Array<{ name: string; keycodes: string[] }>;
+  mapping: Array<{ number: number; keyId: string; row: number; col: number; label: string }>;
+};
+export type GeneratorResult = { target?: MockTarget; errors: ValidationIssue[] };
+/** Generates preview output after validation, without modifying the project. T-2/T-19. */
+export function generateMockTarget(p: ProjectFile): GeneratorResult {
+  const errors = validateProject(p).filter(
+    (x) => x.severity === "blocksOutput" || x.severity === "blocksSave",
+  );
+  if (!p.output.matrix)
+    errors.push({
+      severity: "blocksOutput",
+      code: "matrix-settings-missing",
+      message: "Matrix rowPins and colPins must be configured",
+    });
+  if (p.output.matrix?.kind && p.output.matrix.kind !== "matrix")
+    errors.push({
+      severity: "blocksOutput",
+      code: "unsupported-scan-mode",
+      message: `${p.output.matrix.kind} scan mode is not supported`,
+    });
+  if (errors.length) return { errors };
+  const selected = flattenKeys(p.phy, p.output.variantSelection),
+    active = new Set(selected.map((x) => x.key.id)),
+    order = p.idx.order.filter((id) => active.has(id)),
+    matrix = p.output.matrix!;
+  const rowIndex = new Map(matrix.rowPins.map((x, i) => [x, i])),
+    colIndex = new Map(matrix.colPins.map((x, i) => [x, i]));
+  const wiring = new Map(p.elc.keys.map((x) => [x.key, x]));
+  const row: number[] = [],
+    col: number[] = [];
+  for (const id of order) {
+    const w = wiring.get(id);
+    if (!w || w.detect !== "contact")
+      return {
+        errors: [
+          {
+            severity: "blocksOutput",
+            code: "unsupported-detection",
+            message: "Only contact matrix wiring is supported",
+            ids: [id],
+          },
+        ],
+      };
+    const a = w.terminals.a,
+      b = w.terminals.b;
+    let r: number | undefined, c: number | undefined;
+    if (rowIndex.has(a) && colIndex.has(b)) {
+      r = rowIndex.get(a);
+      c = colIndex.get(b);
+    } else if (rowIndex.has(b) && colIndex.has(a)) {
+      r = rowIndex.get(b);
+      c = colIndex.get(a);
+    }
+    if (r === undefined || c === undefined)
+      return {
+        errors: [
+          {
+            severity: "blocksOutput",
+            code: "unsupported-matrix-wiring",
+            message: "Wiring is not a supported row/column matrix",
+            ids: [id],
+          },
+        ],
+      };
+    row.push(r);
+    col.push(c);
+  }
+  const poses = new Map(selected.map((x) => [x.key.id, x]));
+  const keymaps = p.map.layers.map((l) => ({
+    name: l.name,
+    keycodes: order.map((id) => l.keymap.find((a) => a.keyId === id)!.keycode),
+  }));
+  const target: MockTarget = {
+    format: "mock-target",
+    version: "0.1.0",
+    layout: order.map((id) => {
+      const x = poses.get(id)!;
+      return { keyId: id, x: x.x, y: x.y, rotation: x.rotation, w: x.key.size.w, h: x.key.size.h };
+    }),
+    idx: order,
+    matrix: { rowPins: [...matrix.rowPins], colPins: [...matrix.colPins], rows: row, cols: col },
+    keymaps,
+    mapping: order.map((id, i) => ({
+      number: i,
+      keyId: id,
+      row: row[i]!,
+      col: col[i]!,
+      label: poses.get(id)!.key.labels?.find(Boolean) ?? "",
+    })),
+  };
+  return { target, errors: [] };
+}

mock/src/domain/geometry.ts

@@ -0,0 +1,71 @@
+import type { FlatKey, Node, PhyFile, Transform } from "./phy";
+
+/** Translate·Rotate のアフィン行列を返す。 */
+export function matrix(t: Transform): Affine {
+  const a = (t.rotation * Math.PI) / 180,
+    c = Math.cos(a),
+    s = Math.sin(a);
+  return { a: c, b: s, c: -s, d: c, e: t.x, f: t.y };
+}
+export type Affine = { a: number; b: number; c: number; d: number; e: number; f: number };
+/** 左から右の順でなく、通常の行列積 left·right を返す。 */
+export function compose(left: Affine, right: Affine): Affine {
+  return {
+    a: left.a * right.a + left.c * right.b,
+    b: left.b * right.a + left.d * right.b,
+    c: left.a * right.c + left.c * right.d,
+    d: left.b * right.c + left.d * right.d,
+    e: left.a * right.e + left.c * right.f + left.e,
+    f: left.b * right.e + left.d * right.f + left.f,
+  };
+}
+/** 剛体変換の逆行列を返す。 */
+export function inverse(m: Affine): Affine {
+  return { a: m.a, b: m.c, c: m.b, d: m.d, e: -(m.a * m.e + m.b * m.f), f: -(m.c * m.e + m.d * m.f) };
+}
+/** 点に行列を適用する。 */
+export function apply(m: Affine, p: { x: number; y: number }): { x: number; y: number } {
+  return { x: m.a * p.x + m.c * p.y + m.e, y: m.b * p.x + m.d * p.y + m.f };
+}
+/** PHY ノードのワールド行列を計算する。 */
+export function worldTransform(file: PhyFile, id: string): Affine {
+  const walk = (nodes: Node[], parent: Affine): Affine | undefined => {
+    for (const n of nodes) {
+      const own = compose(parent, matrix(n.transform));
+      if (n.id === id) return own;
+      if (n.type === "cluster") {
+        const r = walk(n.children, own);
+        if (r) return r;
+      }
+      if (n.type === "variantGroup")
+        for (const v of n.children) {
+          const r = walk(v.children, own);
+          if (r) return r;
+        }
+    }
+    return undefined;
+  };
+  const found = walk(file.root, { a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 });
+  if (!found) throw new Error(`Unknown node: ${id}`);
+  return found;
+}
+/** 選択したVariantに従いキーを平坦化する。省略時は各Groupのdefaultを使う。 */
+export function flattenKeys(file: PhyFile, selection: Record<string, string> = {}): FlatKey[] {
+  const out: FlatKey[] = [];
+  const visit = (nodes: Node[], parent: Affine, parentRotation: number, path: string[]) => {
+    for (const n of nodes) {
+      const wm = compose(parent, matrix(n.transform)),
+        p = [...path, n.id],
+        absoluteRotation = parentRotation + n.transform.rotation;
+      if (n.type === "key") out.push({ key: n, x: wm.e, y: wm.f, rotation: absoluteRotation, path: p });
+      else if (n.type === "cluster") visit(n.children, wm, absoluteRotation, p);
+      else if (n.type === "variantGroup") {
+        const v = n.children.find((x) => x.id === (selection[n.id] ?? n.default));
+        if (!v) throw new Error(`Unknown variant for ${n.id}`);
+        visit(v.children, wm, absoluteRotation, [...p, v.id]);
+      }
+    }
+  };
+  visit(file.root, { a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 }, 0, []);
+  return out;
+}

mock/src/domain/history.ts

@@ -0,0 +1,77 @@
+import type { ProjectFile } from "./project";
+/** Snapshot history for whole-project undo/redo. T-17. */
+export class ProjectHistory {
+  private items: ProjectFile[];
+  private cursor = 0;
+  private pending = false;
+  constructor(
+    initial: ProjectFile,
+    private readonly limit = 100,
+  ) {
+    this.items = [structuredClone(initial)];
+  }
+  /** Adds one undoable snapshot unless a grouped edit is active or nothing changed. */
+  push(value: ProjectFile): void {
+    if (this.pending) {
+      this.replaceTop(value);
+      return;
+    }
+    if (JSON.stringify(value) === JSON.stringify(this.items[this.cursor])) return;
+    this.add(value);
+  }
+  /** Starts grouping subsequent pushes into a single operation. T-17. */
+  begin(): void {
+    if (this.pending) throw new Error("History group already active");
+    this.items = this.items.slice(0, this.cursor + 1);
+    this.items.push(structuredClone(this.items[this.cursor]!));
+    this.cursor = this.items.length - 1;
+    if (this.items.length > this.limit) {
+      this.items.shift();
+      this.cursor--;
+    }
+    this.pending = true;
+  }
+  /** Commits the final grouped snapshot as one undo step. T-17. */
+  commit(value?: ProjectFile): void {
+    if (!this.pending) throw new Error("No history group active");
+    if (value) this.items[this.cursor] = structuredClone(value);
+    if (JSON.stringify(this.items[this.cursor]) === JSON.stringify(this.items[this.cursor - 1])) {
+      this.items.pop();
+      this.cursor--;
+    }
+    this.pending = false;
+  }
+  /** Replaces the current snapshot during a grouped drag. T-17. */
+  replaceTop(value: ProjectFile): void {
+    this.items[this.cursor] = structuredClone(value);
+  }
+  /** Moves to the previous snapshot. */
+  undo(): ProjectFile {
+    if (!this.canUndo) throw new Error("Nothing to undo");
+    return structuredClone(this.items[--this.cursor]!);
+  }
+  /** Moves to the next snapshot. */
+  redo(): ProjectFile {
+    if (!this.canRedo) throw new Error("Nothing to redo");
+    return structuredClone(this.items[++this.cursor]!);
+  }
+  get canUndo(): boolean {
+    return this.cursor > 0;
+  }
+  get canRedo(): boolean {
+    return this.cursor < this.items.length - 1;
+  }
+  /** Returns a copy of the current snapshot. */
+  current(): ProjectFile {
+    return structuredClone(this.items[this.cursor]!);
+  }
+  private add(value: ProjectFile) {
+    this.items = this.items.slice(0, this.cursor + 1);
+    this.items.push(structuredClone(value));
+    this.cursor = this.items.length - 1;
+    if (this.items.length > this.limit) {
+      this.items.shift();
+      this.cursor--;
+    }
+  }
+}

mock/src/domain/ids.ts

@@ -0,0 +1,14 @@
+/** T-11: UUID先頭12文字を種別接頭辞に付ける。生成器を注入できる。 */
+export function createId(prefix: string, uuid: () => string = () => globalThis.crypto.randomUUID()): string {
+  return `${prefix}${uuid().replaceAll("-", "").slice(0, 12)}`;
+}
+/** T-11: ノード種別ごとのIDを生成する。 */
+export function createNodeId(
+  kind: "key" | "cluster" | "component" | "variantGroup" | "variant",
+  uuid?: () => string,
+): string {
+  return createId(
+    { key: "key-", cluster: "cl-", component: "cmp-", variantGroup: "vg-", variant: "v-" }[kind],
+    uuid,
+  );
+}

mock/src/domain/idx.ts

@@ -0,0 +1,57 @@
+import type { PhyFile, Node, KeyNode } from "./phy";
+export type PhyReference = { source: string; checksum: string; [key: string]: unknown };
+export type IdxFile = {
+  version: string;
+  phyReference: PhyReference;
+  order: string[];
+  [key: string]: unknown;
+};
+/** Collects keys in document order, including ghost keys and excluding decals. T-18. */
+export function eligibleKeyIds(phy: PhyFile): string[] {
+  const ids: string[] = [];
+  const visit = (nodes: Node[]) =>
+    nodes.forEach((n) => {
+      if (n.type === "key") {
+        if (!n.decal) ids.push(n.id);
+      } else if (n.type === "cluster") visit(n.children);
+      else if (n.type === "variantGroup") n.children.forEach((v) => visit(v.children));
+    });
+  visit(phy.root);
+  return ids;
+}
+/** Makes initial index order from KLE occurrence order. T-18. */
+export function createIdx(phy: PhyFile, keyOrder: string[], phyReference: PhyReference): IdxFile {
+  const valid = new Set(eligibleKeyIds(phy));
+  return {
+    version: "0.1.0",
+    phyReference: structuredClone(phyReference),
+    order: keyOrder.filter((id) => valid.has(id)),
+  };
+}
+/** Lists eligible PHY keys omitted from the saved order. T-18. */
+export function unregisteredKeys(phy: PhyFile, idx: IdxFile): string[] {
+  const registered = new Set(idx.order);
+  return eligibleKeyIds(phy).filter((id) => !registered.has(id));
+}
+/** Registers new keys at the end without rebuilding existing order. T-18. */
+export function appendKeys(idx: IdxFile, ids: string[]): IdxFile {
+  const out = structuredClone(idx);
+  for (const id of ids) if (!out.order.includes(id)) out.order.push(id);
+  return out;
+}
+/** Removes one key from index order. */
+export function excludeKey(idx: IdxFile, keyId: string): IdxFile {
+  const o = structuredClone(idx);
+  o.order = o.order.filter((x) => x !== keyId);
+  return o;
+}
+/** Reorders the saved key list. */
+export function reorderKeys(idx: IdxFile, order: string[]): IdxFile {
+  if (
+    order.length !== idx.order.length ||
+    new Set(order).size !== order.length ||
+    order.some((x) => !idx.order.includes(x))
+  )
+    throw new Error("Order must contain every registered key exactly once");
+  return { ...structuredClone(idx), order: [...order] };
+}

mock/src/domain/idxImport.ts

@@ -0,0 +1,39 @@
+import type { FlatKey } from "./phy";
+
+/** World position of a key origin and its rotation, as read from an existing definition. T-31. */
+export type Placement = { x: number; y: number; rotation: number };
+
+const TOLERANCE = 0.01;
+
+const angle = (deg: number) => ((deg % 360) + 360) % 360;
+
+function sameRotation(a: number, b: number): boolean {
+  const d = Math.abs(angle(a) - angle(b));
+  return Math.min(d, 360 - d) <= TOLERANCE;
+}
+
+/** Matches placements one-to-one to the shown keys by position and rotation, in placement order. */
+export function matchPlacements(
+  placements: readonly Placement[],
+  keys: readonly FlatKey[],
+): { ids: string[]; unmatched: number } {
+  const used = new Set<string>();
+  const ids: string[] = [];
+  for (const p of placements) {
+    let best: FlatKey | undefined,
+      distance = Infinity;
+    for (const k of keys) {
+      if (used.has(k.key.id) || !sameRotation(p.rotation, k.rotation)) continue;
+      const dx = Math.abs(p.x - k.x),
+        dy = Math.abs(p.y - k.y);
+      if (dx > TOLERANCE || dy > TOLERANCE || dx + dy >= distance) continue;
+      best = k;
+      distance = dx + dy;
+    }
+    if (best) {
+      used.add(best.key.id);
+      ids.push(best.key.id);
+    }
+  }
+  return { ids, unmatched: placements.length - ids.length };
+}

mock/src/domain/idxOrder.ts

@@ -0,0 +1,110 @@
+import type { Node, PhyFile } from "./phy";
+
+/** Keys shown in the edited configuration and the VariantGroups each key sits under. T-31. */
+export type OrderContext = {
+  visible: ReadonlySet<string>;
+  groups: ReadonlyMap<string, readonly string[]>;
+};
+
+/** Lists the VariantGroup ancestors of every key, outermost first. Common keys get an empty list. */
+export function keyVariantGroups(phy: PhyFile): Map<string, string[]> {
+  const out = new Map<string, string[]>();
+  const visit = (nodes: Node[], groups: string[]) =>
+    nodes.forEach((n) => {
+      if (n.type === "key") out.set(n.id, groups);
+      else if (n.type === "cluster") visit(n.children, groups);
+      else if (n.type === "variantGroup") n.children.forEach((v) => visit(v.children, [...groups, n.id]));
+    });
+  visit(phy.root, []);
+  return out;
+}
+
+function sharesGroup(ctx: OrderContext, a: string, b: string): boolean {
+  const mine = ctx.groups.get(a) ?? [];
+  return (ctx.groups.get(b) ?? []).some((g) => mine.includes(g));
+}
+
+/**
+ * Splits `order` into one segment per visible key, each holding the hidden keys attached to it.
+ * A hidden key attaches to the nearer visible key that shares a VariantGroup with it,
+ * preferring the one before it; once a hidden key attaches forward, the rest of that run does too.
+ * Concatenating the segments gives `order` back. Without visible keys there are no segments.
+ */
+export function orderSegments(order: readonly string[], ctx: OrderContext): string[][] {
+  const at = order.flatMap((id, i) => (ctx.visible.has(id) ? [i] : []));
+  if (!at.length) return [];
+  const segments = at.map((i) => [order[i]!]);
+  segments[0]!.unshift(...order.slice(0, at[0]));
+  segments.at(-1)!.push(...order.slice(at.at(-1)! + 1));
+  for (let k = 0; k + 1 < at.length; k++) {
+    const prev = order[at[k]!]!,
+      next = order[at[k + 1]!]!,
+      run = order.slice(at[k]! + 1, at[k + 1]);
+    let split = run.findIndex((h) => sharesGroup(ctx, h, next) && !sharesGroup(ctx, h, prev));
+    if (split < 0) split = run.length;
+    segments[k]!.push(...run.slice(0, split));
+    segments[k + 1]!.unshift(...run.slice(split));
+  }
+  return segments;
+}
+
+/**
+ * Moves `keyId` to gap `gap` (0..V) between the visible keys left after taking it out.
+ * Hidden keys that were attached to it stay where they are. Unregistered keys are registered there.
+ */
+export function insertAtGap(
+  order: readonly string[],
+  ctx: OrderContext,
+  keyId: string,
+  gap: number,
+): string[] {
+  const rest = order.filter((id) => id !== keyId);
+  const segments = orderSegments(rest, ctx);
+  if (gap >= segments.length) return [...rest, keyId];
+  return [...segments.slice(0, gap).flat(), keyId, ...segments.slice(gap).flat()];
+}
+
+/** Moves `keyId` right before (`after` false) or right after the visible key `target`. */
+export function insertNextTo(
+  order: readonly string[],
+  ctx: OrderContext,
+  keyId: string,
+  target: string,
+  after: boolean,
+): string[] {
+  if (keyId === target) return [...order];
+  const visibleRest = order.filter((id) => id !== keyId && ctx.visible.has(id));
+  const index = visibleRest.indexOf(target);
+  if (index < 0) throw new Error(`Not a visible registered key: ${target}`);
+  return insertAtGap(order, ctx, keyId, index + (after ? 1 : 0));
+}
+
+/** Swaps two registered keys. Every other key keeps its position. */
+export function swapKeys(order: readonly string[], a: string, b: string): string[] {
+  const i = order.indexOf(a),
+    j = order.indexOf(b);
+  if (i < 0 || j < 0) throw new Error("Both keys must be registered");
+  const out = [...order];
+  [out[i], out[j]] = [out[j]!, out[i]!];
+  return out;
+}
+
+/**
+ * Places the visible keys of `sequence` consecutively, starting where its first registered key was
+ * among the other visible keys. Other visible keys keep their relative order, hidden keys move with
+ * the visible key they are attached to, and unregistered keys in `sequence` are registered. T-31.
+ */
+export function renumber(order: readonly string[], ctx: OrderContext, sequence: readonly string[]): string[] {
+  const registered = new Set(order);
+  const seq = [...new Set(sequence)].filter((id) => ctx.visible.has(id) || !registered.has(id));
+  const inSeq = new Set(seq);
+  const anchor = seq.find((id) => registered.has(id));
+  if (!anchor) return [...order, ...seq];
+  const segments = orderSegments(order, ctx);
+  const byKey = new Map(segments.map((s) => [s.find((id) => ctx.visible.has(id))!, s]));
+  const others = segments.filter((s) => !s.some((id) => inSeq.has(id)));
+  const anchorAt = order.indexOf(anchor);
+  const gap = others.filter((s) => order.indexOf(s.find((id) => ctx.visible.has(id))!) < anchorAt).length;
+  const block = seq.flatMap((id) => byKey.get(id) ?? [id]);
+  return [...others.slice(0, gap).flat(), ...block, ...others.slice(gap).flat()];
+}

mock/src/domain/idxScan.ts

@@ -0,0 +1,158 @@
+import type { FlatKey } from "./phy";
+import type { ProjectFile } from "./project";
+import { detectColumns, detectRows, type KeyRect } from "./rows";
+
+/** Gaps narrower than this do not separate the two halves. T-31. */
+const MIN_HALF_GAP = 0.5;
+
+export type ScanKind = "rows" | "columns" | "halves" | "alternating";
+export type Direction = "normal" | "reversed";
+export type ScanOptions = {
+  kind: ScanKind;
+  /** Whole-board direction for `rows` and `columns`. */
+  direction: Direction;
+  /** Per-half directions for `halves` and `alternating`. */
+  left: Direction;
+  right: Direction;
+  /** Shift of the line assignment per cross line index (columns for row scans, rows for `columns`). */
+  offsets: ReadonlyMap<number, number>;
+};
+export type ScanResult = {
+  sequence: string[];
+  /** Lines the scan walks, for the preview: rows, or columns for `columns`. */
+  lines: string[][];
+  /** Lines that can be shifted with `offsets`, in index order. */
+  crossLines: string[][];
+  /** x of the split between the halves, for scans that use halves. */
+  boundary?: number;
+};
+
+/** Axis-aligned bounding box of a key in world coordinates; rotated keys are judged by it. T-31. */
+export function keyRect(k: FlatKey): KeyRect {
+  const r = (k.rotation * Math.PI) / 180,
+    c = Math.cos(r),
+    s = Math.sin(r);
+  const { w, h } = k.key.size;
+  const xs = [0, w * c, -h * s, w * c - h * s].map((dx) => k.x + dx);
+  const ys = [0, w * s, h * c, w * s + h * c].map((dy) => k.y + dy);
+  const x = Math.min(...xs),
+    y = Math.min(...ys);
+  return { id: k.key.id, x, y, w: Math.max(...xs) - x, h: Math.max(...ys) - y };
+}
+
+/**
+ * Splits keys into left and right halves at the widest gap between detected columns.
+ * When no gap reaches MIN_HALF_GAP, splits at the middle of the keys' x range by key center.
+ */
+export function splitHalves(rects: KeyRect[]): { left: Set<string>; right: Set<string>; boundary: number } {
+  const columns = detectColumns(rects);
+  const byId = new Map(rects.map((r) => [r.id, r]));
+  const span = columns.map((col) => {
+    const rs = col.map((id) => byId.get(id)!);
+    return { min: Math.min(...rs.map((r) => r.x)), max: Math.max(...rs.map((r) => r.x + r.w)) };
+  });
+  let best = -1,
+    width = -Infinity;
+  for (let i = 0; i + 1 < span.length; i++) {
+    const gap = span[i + 1]!.min - span[i]!.max;
+    if (gap > width) [best, width] = [i, gap];
+  }
+  if (best >= 0 && width >= MIN_HALF_GAP) {
+    const left = new Set(columns.slice(0, best + 1).flat());
+    return {
+      left,
+      right: new Set(rects.map((r) => r.id).filter((id) => !left.has(id))),
+      boundary: (span[best]!.max + span[best + 1]!.min) / 2,
+    };
+  }
+  const boundary = rects.length
+    ? (Math.min(...rects.map((r) => r.x)) + Math.max(...rects.map((r) => r.x + r.w))) / 2
+    : 0;
+  const left = new Set(rects.filter((r) => r.x + r.w / 2 < boundary).map((r) => r.id));
+  return { left, right: new Set(rects.map((r) => r.id).filter((id) => !left.has(id))), boundary };
+}
+
+/**
+ * Detects rows (or columns), then moves every key of cross line `i` by `offsets.get(i)` lines.
+ * Rows are rebuilt top to bottom and sorted by x; columns left to right and sorted by y.
+ */
+export function assignLines(
+  rects: KeyRect[],
+  kind: "row" | "column",
+  offsets: ReadonlyMap<number, number>,
+): { lines: string[][]; crossLines: string[][] } {
+  const base = kind === "row" ? detectRows(rects) : detectColumns(rects);
+  const crossLines = kind === "row" ? detectColumns(rects) : detectRows(rects);
+  const line = new Map(base.flatMap((ids, i) => ids.map((id) => [id, i] as const)));
+  crossLines.forEach((ids, i) => ids.forEach((id) => line.set(id, line.get(id)! + (offsets.get(i) ?? 0))));
+  const byId = new Map(rects.map((r) => [r.id, r]));
+  const along = (id: string) => (kind === "row" ? byId.get(id)!.x : byId.get(id)!.y);
+  const indexes = [...new Set(line.values())].sort((a, b) => a - b);
+  const lines = indexes.map((i) =>
+    [...line]
+      .filter(([, at]) => at === i)
+      .map(([id]) => id)
+      .sort((a, b) => along(a) - along(b)),
+  );
+  return { lines, crossLines };
+}
+
+const directed = <T>(items: T[], d: Direction) => (d === "reversed" ? [...items].reverse() : items);
+
+/** Builds the key sequence of a preset scan over the target keys. T-31. */
+export function scanKeys(rects: KeyRect[], options: ScanOptions): ScanResult {
+  if (options.kind === "columns") {
+    const { lines, crossLines } = assignLines(rects, "column", options.offsets);
+    return { sequence: directed(lines, options.direction).flat(), lines, crossLines };
+  }
+  const { lines, crossLines } = assignLines(rects, "row", options.offsets);
+  if (options.kind === "rows")
+    return { sequence: lines.flatMap((row) => directed(row, options.direction)), lines, crossLines };
+  const { left, boundary } = splitHalves(rects);
+  const leftPart = (row: string[]) =>
+    directed(
+      row.filter((id) => left.has(id)),
+      options.left,
+    );
+  const rightPart = (row: string[]) =>
+    directed(
+      row.filter((id) => !left.has(id)),
+      options.right,
+    );
+  const sequence =
+    options.kind === "halves"
+      ? [...lines.flatMap(leftPart), ...lines.flatMap(rightPart)]
+      : lines.flatMap((row) => [...leftPart(row), ...rightPart(row)]);
+  return { sequence, lines, crossLines, boundary };
+}
+
+/**
+ * Finds each contact key's (row, col) from the matrix pins, by the same rule as the Generator.
+ * Returns undefined when the project has no matrix settings. T-19.
+ */
+export function matrixPositions(p: ProjectFile): Map<string, { row: number; col: number }> | undefined {
+  const matrix = p.output.matrix;
+  if (!matrix) return undefined;
+  const rowIndex = new Map(matrix.rowPins.map((x, i) => [x, i])),
+    colIndex = new Map(matrix.colPins.map((x, i) => [x, i]));
+  const out = new Map<string, { row: number; col: number }>();
+  for (const w of p.elc.keys) {
+    if (w.detect !== "contact") continue;
+    const { a, b } = w.terminals;
+    if (rowIndex.has(a) && colIndex.has(b)) out.set(w.key, { row: rowIndex.get(a)!, col: colIndex.get(b)! });
+    else if (rowIndex.has(b) && colIndex.has(a))
+      out.set(w.key, { row: rowIndex.get(b)!, col: colIndex.get(a)! });
+  }
+  return out;
+}
+
+/** Sorts keys by row then col. Keys without a matrix position keep their input order at the end. */
+export function matrixSequence(
+  ids: readonly string[],
+  positions: ReadonlyMap<string, { row: number; col: number }>,
+) {
+  const placed = ids.filter((id) => positions.has(id));
+  const rest = ids.filter((id) => !positions.has(id));
+  const key = (id: string) => positions.get(id)!;
+  return [...placed.sort((a, b) => key(a).row - key(b).row || key(a).col - key(b).col), ...rest];
+}

mock/src/domain/keyShape.ts

@@ -0,0 +1,89 @@
+import type { Point, Size } from "./phy";
+
+export type Rect = { x: number; y: number; w: number; h: number };
+
+/** ISO Enter, BAE and stepped keys carry a second rectangle (KLE's x2/y2/w2/h2). */
+export function hasSecondRect(size: Size): boolean {
+  return [size.x2, size.y2, size.w2, size.h2].some((v) => v !== undefined);
+}
+
+/** The key's rectangles in key-local coordinates. Missing second-rectangle fields take KLE's defaults (0, 0, w, h). */
+export function keyRects(size: Size): Rect[] {
+  const main = { x: 0, y: 0, w: size.w, h: size.h };
+  if (!hasSecondRect(size)) return [main];
+  return [main, { x: size.x2 ?? 0, y: size.y2 ?? 0, w: size.w2 ?? size.w, h: size.h2 ?? size.h }];
+}
+
+/** Corners of every rectangle of the key, for bounding boxes. */
+export function keyCorners(size: Size): Point[] {
+  return keyRects(size).flatMap((r) => [
+    { x: r.x, y: r.y },
+    { x: r.x + r.w, y: r.y },
+    { x: r.x + r.w, y: r.y + r.h },
+    { x: r.x, y: r.y + r.h },
+  ]);
+}
+
+/** Top-left of the key's local bounding box. */
+export function keyOrigin(size: Size): Point {
+  const corners = keyCorners(size);
+  return { x: Math.min(...corners.map((p) => p.x)), y: Math.min(...corners.map((p) => p.y)) };
+}
+
+/**
+ * Outline of the union of the key's rectangles, as closed loops running clockwise on screen (y down).
+ * The plane is cut into cells along every rectangle edge; boundary edges of filled cells are chained into loops.
+ */
+export function keyOutline(size: Size): Point[][] {
+  const rects = keyRects(size).filter((r) => r.w > 0 && r.h > 0);
+  const xs = [...new Set(rects.flatMap((r) => [r.x, r.x + r.w]))].sort((a, b) => a - b);
+  const ys = [...new Set(rects.flatMap((r) => [r.y, r.y + r.h]))].sort((a, b) => a - b);
+  const filled = (i: number, j: number) => {
+    if (i < 0 || j < 0 || i >= xs.length - 1 || j >= ys.length - 1) return false;
+    const cx = (xs[i]! + xs[i + 1]!) / 2,
+      cy = (ys[j]! + ys[j + 1]!) / 2;
+    return rects.some((r) => cx > r.x && cx < r.x + r.w && cy > r.y && cy < r.y + r.h);
+  };
+  const key = (p: Point) => `${p.x},${p.y}`;
+  const edges = new Map<string, Point[]>();
+  const edge = (from: Point, to: Point) => edges.set(key(from), [...(edges.get(key(from)) ?? []), to]);
+  for (let i = 0; i < xs.length - 1; i++)
+    for (let j = 0; j < ys.length - 1; j++) {
+      if (!filled(i, j)) continue;
+      const [x0, x1, y0, y1] = [xs[i]!, xs[i + 1]!, ys[j]!, ys[j + 1]!];
+      if (!filled(i, j - 1)) edge({ x: x0, y: y0 }, { x: x1, y: y0 });
+      if (!filled(i + 1, j)) edge({ x: x1, y: y0 }, { x: x1, y: y1 });
+      if (!filled(i, j + 1)) edge({ x: x1, y: y1 }, { x: x0, y: y1 });
+      if (!filled(i - 1, j)) edge({ x: x0, y: y1 }, { x: x0, y: y0 });
+    }
+  const loops: Point[][] = [];
+  for (const start of edges.keys()) {
+    while (edges.get(start)?.length) {
+      const loop: Point[] = [];
+      let at = start;
+      for (let next = edges.get(at)?.pop(); next; next = edges.get(at)?.pop()) {
+        loop.push(next);
+        at = key(next);
+        if (at === start) break;
+      }
+      loops.push(dropCollinear(loop));
+    }
+  }
+  return loops;
+}
+
+function dropCollinear(loop: Point[]): Point[] {
+  return loop.filter((p, i) => {
+    const prev = loop[(i + loop.length - 1) % loop.length]!,
+      next = loop[(i + 1) % loop.length]!;
+    return !((prev.x === p.x && p.x === next.x) || (prev.y === p.y && p.y === next.y));
+  });
+}
+
+/** A key shape the editor adds in one step. provisional/decisions.md T-32. */
+export type KeyPreset = { id: string; label: string; size: Size };
+
+/** Non-rectangular keys offered by「異形キーを足す」. Sizes follow KLE's presets (keys.json). */
+export const IRREGULAR_KEY_PRESETS: KeyPreset[] = [
+  { id: "iso-enter", label: "ISO Enter", size: { w: 1.25, h: 2, x2: -0.25, w2: 1.5, h2: 1 } },
+];

mock/src/domain/keycodeLabels.ts

@@ -0,0 +1,76 @@
+import { qmkBasicKeycodes } from "./qmkBasicKeycodes";
+
+/** Small US keyboard display map for common QMK basic keys. T-23. */
+export const keycodeLabels: Record<string, string> = {
+  KC_A: "A",
+  KC_B: "B",
+  KC_C: "C",
+  KC_D: "D",
+  KC_E: "E",
+  KC_F: "F",
+  KC_G: "G",
+  KC_H: "H",
+  KC_I: "I",
+  KC_J: "J",
+  KC_K: "K",
+  KC_L: "L",
+  KC_M: "M",
+  KC_N: "N",
+  KC_O: "O",
+  KC_P: "P",
+  KC_Q: "Q",
+  KC_R: "R",
+  KC_S: "S",
+  KC_T: "T",
+  KC_U: "U",
+  KC_V: "V",
+  KC_W: "W",
+  KC_X: "X",
+  KC_Y: "Y",
+  KC_Z: "Z",
+  KC_1: "1",
+  KC_2: "2",
+  KC_3: "3",
+  KC_4: "4",
+  KC_5: "5",
+  KC_6: "6",
+  KC_7: "7",
+  KC_8: "8",
+  KC_9: "9",
+  KC_0: "0",
+  KC_SPC: "Space",
+  KC_ENTER: "Enter",
+  KC_ESC: "Escape",
+  KC_TAB: "Tab",
+  KC_MINUS: "-",
+  KC_EQUAL: "=",
+  KC_LBRC: "[",
+  KC_RBRC: "]",
+  KC_BSLS: "\\",
+  KC_SCLN: ";",
+  KC_QUOT: "'",
+  KC_GRV: "`",
+  KC_COMM: ",",
+  KC_DOT: ".",
+  KC_SLSH: "/",
+};
+
+const qmkCodeByName = new Map(
+  qmkBasicKeycodes.flatMap((entry) =>
+    [entry.key, ...entry.aliases].map((name) => [name, entry.key] as const),
+  ),
+);
+
+/** Looks up the existing US display label, resolving a QMK alias to its formal name. */
+export function getKeycodeLabel(code: string): string | undefined {
+  const formalName = qmkCodeByName.get(code);
+  if (!formalName) return keycodeLabels[code];
+  return (
+    keycodeLabels[code] ??
+    keycodeLabels[formalName] ??
+    qmkBasicKeycodes
+      .find((entry) => entry.key === formalName)
+      ?.aliases.map((alias) => keycodeLabels[alias])
+      .find((label): label is string => label !== undefined)
+  );
+}

mock/src/domain/map.ts

@@ -0,0 +1,149 @@
+import type { PhyReference } from "./idx";
+import { qmkBasicKeycodes } from "./qmkBasicKeycodes";
+export type KeyAssignment = { keyId: string; keycode: string; [key: string]: unknown };
+export type MapLayer = { name: string; keymap: KeyAssignment[]; [key: string]: unknown };
+export type MapFile = {
+  version: string;
+  phyReference: PhyReference;
+  layers: MapLayer[];
+  [key: string]: unknown;
+};
+export type ParsedKeycode = {
+  kind: "basic" | "modifier" | "none" | "transparent" | "layer" | "modified" | "unknown";
+  code: string;
+  layer?: string;
+  inner?: ParsedKeycode;
+};
+const codesFor = (groups: QmkKeyGroup[]) =>
+  new Set(
+    qmkBasicKeycodes
+      .filter((keycode) => groups.includes(keycode.group))
+      .flatMap(({ key, aliases }) => [key, ...aliases]),
+  );
+type QmkKeyGroup = (typeof qmkBasicKeycodes)[number]["group"];
+const codesForKey = (key: string) => {
+  const entry = qmkBasicKeycodes.find((keycode) => keycode.key === key);
+  return new Set(entry ? [entry.key, ...entry.aliases] : []);
+};
+const basic = codesFor(["basic"]);
+const modifiers = codesFor(["modifiers"]);
+const noneCodes = codesForKey("KC_NO");
+const transparentCodes = codesForKey("KC_TRANSPARENT");
+/** Parses supported QMK keycode syntax without evaluation. T-22. */
+export function parseKeycode(s: string): ParsedKeycode {
+  const m = s.match(/^(MO|TG|TO|TT|DF|OSL)\(([^()]+)\)$/);
+  if (m) return { kind: "layer", code: m[1]!, layer: m[2]! };
+  const lt = s.match(/^LT\(([^(),]+),\s*([A-Za-z0-9_]+)\)$/);
+  if (lt) return { kind: "layer", code: "LT", layer: lt[1]!, inner: parseKeycode(lt[2]!) };
+  const mod = s.match(/^(LCTL|LSFT|LALT|LGUI|RCTL|RSFT|RALT|RGUI)\(([A-Za-z0-9_]+)\)$/);
+  if (mod) return { kind: "modified", code: mod[1]!, inner: parseKeycode(mod[2]!) };
+  if (noneCodes.has(s)) return { kind: "none", code: s };
+  if (transparentCodes.has(s)) return { kind: "transparent", code: s };
+  if (basic.has(s)) return { kind: "basic", code: s };
+  if (modifiers.has(s)) return { kind: "modifier", code: s };
+  return { kind: "unknown", code: s };
+}
+
+function simpleEditableKeycode(parsed: ParsedKeycode): boolean {
+  return (
+    parsed.kind === "basic" ||
+    parsed.kind === "modifier" ||
+    parsed.kind === "none" ||
+    parsed.kind === "transparent"
+  );
+}
+
+/** Returns whether a keycode uses syntax editable under T-22. */
+export function isEditableKeycode(keycode: string): boolean {
+  const parsed = parseKeycode(keycode);
+  if (parsed.kind === "unknown") return false;
+  if (parsed.kind === "modified") return !!parsed.inner && simpleEditableKeycode(parsed.inner);
+  if (parsed.kind === "layer")
+    return parsed.code !== "LT" || (!!parsed.inner && simpleEditableKeycode(parsed.inner));
+  return true;
+}
+/** Creates a MAP with one empty Base layer. T-22. */
+export function createMap(ref: PhyReference): MapFile {
+  return { version: "0.1.0", phyReference: structuredClone(ref), layers: [{ name: "Base", keymap: [] }] };
+}
+/** Adds a uniquely named layer. T-22. */
+export function addLayer(map: MapFile, name: string): MapFile {
+  if (map.layers.some((l) => l.name === name)) throw new Error("Layer name already exists");
+  const o = structuredClone(map);
+  o.layers.push({ name, keymap: [] });
+  return o;
+}
+/** Renames a layer and rewrites encoded layer references. T-22. */
+export function renameLayer(map: MapFile, oldName: string, newName: string): MapFile {
+  if (map.layers.some((l) => l.name === newName)) throw new Error("Layer name already exists");
+  const o = structuredClone(map);
+  const l = o.layers.find((x) => x.name === oldName);
+  if (!l) throw new Error("Unknown layer");
+  l.name = newName;
+  for (const x of o.layers)
+    for (const a of x.keymap) a.keycode = rewriteLayerRef(a.keycode, oldName, newName);
+  return o;
+}
+function rewriteLayerRef(s: string, oldName: string, newName: string): string {
+  const p = parseKeycode(s);
+  if (p.kind === "layer" && p.layer === oldName) {
+    if (p.code === "LT") return `LT(${newName}, ${p.inner?.code ?? ""})`;
+    return `${p.code}(${newName})`;
+  }
+  return s;
+}
+/** Moves a layer to a new array position. */
+export function reorderLayer(map: MapFile, name: string, index: number): MapFile {
+  const o = structuredClone(map),
+    i = o.layers.findIndex((x) => x.name === name);
+  if (i < 0) throw new Error("Unknown layer");
+  const [l] = o.layers.splice(i, 1);
+  o.layers.splice(Math.max(0, Math.min(index, o.layers.length)), 0, l!);
+  return o;
+}
+/** Deletes an unreferenced layer; references block deletion. T-22. */
+export function deleteLayer(map: MapFile, name: string): MapFile {
+  if (map.layers.length < 2) throw new Error("At least one layer is required");
+  if (
+    map.layers.some((l) =>
+      l.keymap.some((a) => {
+        const p = parseKeycode(a.keycode);
+        return p.kind === "layer" && p.layer === name;
+      }),
+    )
+  )
+    throw new Error("Layer is referenced");
+  const o = structuredClone(map);
+  o.layers = o.layers.filter((l) => l.name !== name);
+  return o;
+}
+/** Assigns a keycode to a key, replacing an existing assignment. T-22. */
+export function assignKey(map: MapFile, layerName: string, keyId: string, keycode: string): MapFile {
+  if (!isEditableKeycode(keycode)) throw new Error(`Unsupported editable keycode: ${keycode}`);
+  const parsed = parseKeycode(keycode);
+  if (parsed.kind === "layer" && !map.layers.some((layer) => layer.name === parsed.layer))
+    throw new Error(`Unknown MAP layer reference: ${parsed.layer}`);
+  const o = structuredClone(map),
+    l = o.layers.find((x) => x.name === layerName);
+  if (!l) throw new Error("Unknown layer");
+  const i = l.keymap.findIndex((a) => a.keyId === keyId),
+    old = i < 0 ? undefined : l.keymap[i],
+    a = { ...old, keyId, keycode };
+  if (i < 0) l.keymap.push(a);
+  else l.keymap[i] = a;
+  return o;
+}
+/** Removes a key assignment. */
+export function unassignKey(map: MapFile, layerName: string, keyId: string): MapFile {
+  const o = structuredClone(map),
+    l = o.layers.find((x) => x.name === layerName);
+  if (!l) throw new Error("Unknown layer");
+  l.keymap = l.keymap.filter((a) => a.keyId !== keyId);
+  return o;
+}
+/** Lists keys not assigned in a layer. T-22. */
+export function unassignedKeys(map: MapFile, layerName: string, keyIds: string[]): string[] {
+  const l = map.layers.find((x) => x.name === layerName);
+  const assigned = new Set(l?.keymap.map((x) => x.keyId));
+  return keyIds.filter((x) => !assigned?.has(x));
+}

mock/src/domain/phy.ts

@@ -0,0 +1,53 @@
+/** PHY JSON Schema §1 の型。D-1: Schema の必須 type/name/compatibility を採用。 */
+export type Point = { x: number; y: number };
+export type Transform = { x: number; y: number; rotation: number };
+export type Size = { w: number; h: number; x2?: number; y2?: number; w2?: number; h2?: number };
+export type Profile = {
+  id: string;
+  name: string;
+  unitSize: Point;
+  visualOffset?: { top: number; right: number; bottom: number; left: number; radius: number };
+};
+export type KleCompatibility = Record<string, unknown>;
+export type KeyNode = {
+  type: "key";
+  id: string;
+  profile: string;
+  transform: Transform;
+  size: Size;
+  switchOffset?: Point;
+  partGroup?: string;
+  orientation?: 0 | 90 | 180 | 270;
+  perKeyLED?: boolean;
+  decal?: boolean;
+  ghost?: boolean;
+  labels?: string[];
+  kleCompatibility?: KleCompatibility;
+};
+export type ComponentNode = { type: "component"; id: string; transform: Transform; partGroup?: string };
+export type ClusterNode = {
+  type: "cluster";
+  id: string;
+  name?: string;
+  transform: Transform;
+  children: Node[];
+};
+export type Variant = { type: "variant"; id: string; name: string; children: Node[] };
+export type VariantGroupNode = {
+  type: "variantGroup";
+  id: string;
+  name: string;
+  transform: Transform;
+  default: string;
+  children: Variant[];
+};
+export type Node = KeyNode | ComponentNode | ClusterNode | VariantGroupNode;
+export type PhyFile = {
+  version: string;
+  metadata: { name?: string; author?: string; description?: string; created?: string; modified?: string };
+  profiles: Profile[];
+  root: Node[];
+  kleCompatibility?: KleCompatibility;
+};
+
+export type FlatKey = { key: KeyNode; x: number; y: number; rotation: number; path: string[] };

mock/src/domain/phyCommands.ts

@@ -0,0 +1,491 @@
+import type { ClusterNode, KeyNode, Node, PhyFile, Size, Transform, Variant, VariantGroupNode } from "./phy";
+import { apply, compose, inverse, matrix } from "./geometry";
+import { createNodeId } from "./ids";
+import { keyCorners } from "./keyShape";
+
+const ident = { a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 };
+type Container = { nodes: Node[]; parentWorld: typeof ident; parentRotation: number };
+function containers(f: PhyFile): Map<string, Container> {
+  const m = new Map<string, Container>();
+  const rec = (ns: Node[], w: typeof ident, angle: number) => {
+    for (const n of ns) {
+      m.set(n.id, { nodes: ns, parentWorld: w, parentRotation: angle });
+      const nw = compose(w, matrix(n.transform));
+      const nextAngle = angle + n.transform.rotation;
+      if (n.type === "cluster") rec(n.children, nw, nextAngle);
+      if (n.type === "variantGroup")
+        for (const v of n.children) {
+          m.set(v.id, { nodes: v.children, parentWorld: nw, parentRotation: nextAngle });
+          rec(v.children, nw, nextAngle);
+        }
+    }
+  };
+  rec(f.root, ident, 0);
+  return m;
+}
+function find(f: PhyFile, id: string): Node {
+  const c = containers(f).get(id);
+  const n = c?.nodes.find((x) => x.id === id);
+  if (!n) throw new Error(`Unknown node: ${id}`);
+  return n;
+}
+function world(f: PhyFile, id: string): typeof ident {
+  const c = containers(f).get(id);
+  const n = c?.nodes.find((x) => x.id === id);
+  if (!n) throw new Error(`Unknown node: ${id}`);
+  return compose(c!.parentWorld, matrix(n.transform));
+}
+function worldRotation(f: PhyFile, id: string): number {
+  const c = containers(f).get(id);
+  const n = c?.nodes.find((x) => x.id === id);
+  if (!n || !c) throw new Error(`Unknown node: ${id}`);
+  return c.parentRotation + n.transform.rotation;
+}
+function mutable(f: PhyFile): PhyFile {
+  return structuredClone(f);
+}
+function nodeId(kind: Parameters<typeof createNodeId>[0], gen?: () => string) {
+  return createNodeId(kind, gen);
+}
+/** 新しいPHYを返す。T-11。 */
+export function addKey(
+  f: PhyFile,
+  at: Transform,
+  size: Size,
+  profile = f.profiles[0]!.id,
+  gen?: () => string,
+): PhyFile {
+  const o = mutable(f);
+  o.root.push({ type: "key", id: nodeId("key", gen), profile, transform: { ...at }, size: { ...size } });
+  return o;
+}
+/** 新しいPHYを返す。T-11。 */
+export function addComponent(f: PhyFile, at: Transform, partGroup?: string, gen?: () => string): PhyFile {
+  const o = mutable(f);
+  o.root.push({
+    type: "component",
+    id: nodeId("component", gen),
+    transform: { ...at },
+    ...(partGroup === undefined ? {} : { partGroup }),
+  });
+  return o;
+}
+
+/** 指定コンテナへキーを追加する。 */
+export function addKeyToParent(
+  f: PhyFile,
+  parentId: string | null,
+  at: Transform,
+  size: Size,
+  profile = f.profiles[0]!.id,
+  gen?: () => string,
+): PhyFile {
+  const o = mutable(f),
+    target = parentNodes(o, parentId);
+  target.push({ type: "key", id: nodeId("key", gen), profile, transform: { ...at }, size: { ...size } });
+  return o;
+}
+
+/** 指定コンテナへ部品を追加する。 */
+export function addComponentToParent(
+  f: PhyFile,
+  parentId: string | null,
+  at: Transform,
+  partGroup?: string,
+  gen?: () => string,
+): PhyFile {
+  const o = mutable(f),
+    target = parentNodes(o, parentId);
+  target.push({
+    type: "component",
+    id: nodeId("component", gen),
+    transform: { ...at },
+    ...(partGroup ? { partGroup } : {}),
+  });
+  return o;
+}
+
+/** root / cluster / variant の指定先にノード群を挿入する。 */
+export function insertNodes(f: PhyFile, parentId: string | null, nodes: Node[], index?: number): PhyFile {
+  const o = mutable(f),
+    target = parentNodes(o, parentId);
+  target.splice(index ?? target.length, 0, ...structuredClone(nodes));
+  return o;
+}
+
+function parentNodes(f: PhyFile, parentId: string | null): Node[] {
+  if (!parentId) return f.root;
+  // variantのIDは containers に子の入れ物として載るので、find ではノードとして引けない
+  const n = containers(f)
+    .get(parentId)
+    ?.nodes.find((x) => x.id === parentId);
+  if (n?.type === "cluster") return n.children;
+  if (n?.type === "variantGroup") throw new Error("Choose a variant as the parent");
+  return findVariant(f, parentId).children;
+}
+/** ローカル座標の差分でノードを移動する。 */
+export function moveNode(f: PhyFile, id: string, dx: number, dy: number): PhyFile {
+  const o = mutable(f),
+    n = find(o, id);
+  n.transform.x += dx;
+  n.transform.y += dy;
+  return o;
+}
+/** ノードを回転する。 */
+export function rotateNode(f: PhyFile, id: string, delta: number): PhyFile {
+  const o = mutable(f),
+    n = find(o, id);
+  n.transform.rotation += delta;
+  return o;
+}
+/** キーのサイズを変更する。 */
+export function resizeKey(f: PhyFile, id: string, size: KeyNode["size"]): PhyFile {
+  const o = mutable(f),
+    n = find(o, id);
+  if (n.type !== "key") throw new Error(`${id} is not a key`);
+  n.size = { ...size };
+  return o;
+}
+/** 同じ親のノードを新クラスターにまとめ、絶対変換を保つ。T-11。 */
+export function clusterNodes(f: PhyFile, ids: string[], name = "Cluster", gen?: () => string): PhyFile {
+  if (ids.length < 1) throw new Error("Select at least one node");
+  const o = mutable(f),
+    cs = containers(o),
+    first = cs.get(ids[0]!);
+  if (!first || ids.some((id) => cs.get(id)?.nodes !== first.nodes))
+    throw new Error("Selected nodes must be siblings");
+  const selected = ids.map((id) => first.nodes.find((n) => n.id === id)!);
+  if (selected.some((n) => !n)) throw new Error("Unknown selection");
+  const angles = selected.map((n) => world(o, n.id));
+  const selectedAngles = selected.map((n) => first.parentRotation + n.transform.rotation);
+  const angle = selectedAngles[0]!;
+  const same = selectedAngles.every((candidate) => Math.abs(candidate - angle) < 1e-9);
+  const basis = matrix({ x: 0, y: 0, rotation: same ? angle : 0 }),
+    basisInverse = inverse(basis);
+  const shapePoints = selected.flatMap((n, i) => boundsPoints(n, angles[i]!));
+  if (shapePoints.length === 0) angles.forEach((m) => shapePoints.push({ x: m.e, y: m.f }));
+  const localOrigins = shapePoints.map((p) => apply(basisInverse, p));
+  const min = { x: Math.min(...localOrigins.map((p) => p.x)), y: Math.min(...localOrigins.map((p) => p.y)) };
+  const origin = apply(basis, min);
+  const wt = matrix({ x: origin.x, y: origin.y, rotation: same ? angle : 0 });
+  const local = compose(inverse(first.parentWorld), wt);
+  const id = nodeId("cluster", gen),
+    cluster: ClusterNode = {
+      type: "cluster",
+      id,
+      name,
+      transform: { x: local.e, y: local.f, rotation: (same ? angle : 0) - first.parentRotation },
+      children: [],
+    };
+  const inv = inverse(wt);
+  cluster.children = selected.map((n) => {
+    const w = world(o, n.id),
+      rel = compose(inv, w);
+    return {
+      ...n,
+      transform: { x: rel.e, y: rel.f, rotation: selectedAngles[selected.indexOf(n)]! - (same ? angle : 0) },
+    } as Node;
+  });
+  const indices = selected.map((n) => first.nodes.indexOf(n)).sort((a, b) => a - b);
+  const insert = indices[0]!;
+  first.nodes.splice(0, first.nodes.length, ...first.nodes.filter((n) => !ids.includes(n.id)));
+  first.nodes.splice(insert, 0, cluster);
+  return o;
+}
+/** clusterの子を同じ親へ戻し、絶対変換を保つ。 */
+export function uncluster(f: PhyFile, id: string): PhyFile {
+  const o = mutable(f),
+    cs = containers(o),
+    c = cs.get(id),
+    cluster = c?.nodes.find((n) => n.id === id);
+  if (!cluster || cluster.type !== "cluster") throw new Error(`${id} is not a cluster`);
+  const clusterWorldRotation = c!.parentRotation + cluster.transform.rotation;
+  const cw = compose(c!.parentWorld, matrix(cluster.transform)),
+    converted = cluster.children.map((n) => {
+      const w = compose(cw, matrix(n.transform)),
+        rel = compose(inverse(c!.parentWorld), w);
+      return {
+        ...n,
+        transform: {
+          x: rel.e,
+          y: rel.f,
+          rotation: clusterWorldRotation + n.transform.rotation - c!.parentRotation,
+        },
+      } as Node;
+    });
+  const index = c!.nodes.indexOf(cluster);
+  c!.nodes.splice(index, 1, ...converted);
+  return o;
+}
+/** ノードを任意の親/rootへ移し、絶対変換を保つ。T-27。 */
+export function reparent(f: PhyFile, id: string, newParentId: string | null, index?: number): PhyFile {
+  const o = mutable(f),
+    cs = containers(o),
+    src = cs.get(id),
+    n = src?.nodes.find((x) => x.id === id);
+  if (!n) throw new Error(`Unknown node: ${id}`);
+  const oldW = world(o, id),
+    oldRotation = worldRotation(o, id);
+  let target: Node[] = o.root,
+    parentW = ident,
+    parentRotation = 0;
+  if (newParentId) {
+    const p = find(o, newParentId);
+    if (p.type !== "cluster")
+      throw new Error("Target parent must be a cluster; use reparentToVariant for variant children");
+    if (containsNode(n, newParentId)) throw new Error("Cannot reparent a node into its descendant");
+    target = p.children;
+    parentW = world(o, p.id);
+    parentRotation = worldRotation(o, p.id);
+  }
+  const oldIndex = src!.nodes.indexOf(n),
+    sameParent = target === src!.nodes;
+  src!.nodes.splice(oldIndex, 1);
+  const rel = compose(inverse(parentW), oldW);
+  n.transform = { x: rel.e, y: rel.f, rotation: oldRotation - parentRotation };
+  let at = index ?? target.length;
+  if (sameParent && index !== undefined && oldIndex < index) at--;
+  target.splice(Math.max(0, Math.min(at, target.length)), 0, n);
+  return o;
+}
+/** variant内へ移動するreparent。T-27。 */
+export function reparentToVariant(f: PhyFile, id: string, variantId: string, index?: number): PhyFile {
+  const o = mutable(f),
+    cs = containers(o),
+    src = cs.get(id),
+    n = src?.nodes.find((x) => x.id === id);
+  const v = findVariant(o, variantId);
+  if (!n || !src) throw new Error(`Unknown node: ${id}`);
+  if (containsNode(n, variantId)) throw new Error("Cannot reparent a node into its descendant");
+  const old = world(o, id),
+    oldRotation = worldRotation(o, id),
+    parent = srcVariantWorld(o, variantId),
+    rel = compose(inverse(parent), old);
+  const parentRotation = srcVariantRotation(o, variantId);
+  src.nodes.splice(src.nodes.indexOf(n), 1);
+  n.transform = { x: rel.e, y: rel.f, rotation: oldRotation - parentRotation };
+  v.children.splice(index ?? v.children.length, 0, n);
+  return o;
+}
+function containsNode(n: Node, id: string): boolean {
+  if (n.id === id) return true;
+  if (n.type === "cluster") return n.children.some((c) => containsNode(c, id));
+  if (n.type === "variantGroup")
+    return n.children.some((v) => v.id === id || v.children.some((c) => containsNode(c, id)));
+  return false;
+}
+function boundsPoints(n: Node, worldMatrix: ReturnType<typeof matrix>): { x: number; y: number }[] {
+  if (n.type === "key") {
+    return keyCorners(n.size).map((point) => apply(worldMatrix, point));
+  }
+  if (n.type === "component") return [{ x: worldMatrix.e, y: worldMatrix.f }];
+  if (n.type === "cluster")
+    return n.children.flatMap((child) => boundsPoints(child, compose(worldMatrix, matrix(child.transform))));
+  const selected = n.children.find((variant) => variant.id === n.default);
+  return selected
+    ? selected.children.flatMap((child) => boundsPoints(child, compose(worldMatrix, matrix(child.transform))))
+    : [{ x: worldMatrix.e, y: worldMatrix.f }];
+}
+function findVariant(f: PhyFile, id: string): Variant {
+  for (const n of f.root) {
+    const r = walk(n, id);
+    if (r) return r;
+  }
+  throw new Error(`Unknown variant: ${id}`);
+}
+function walk(n: Node, id: string): Variant | undefined {
+  if (n.type === "variantGroup") {
+    for (const v of n.children) {
+      if (v.id === id) return v;
+      for (const c of v.children) {
+        const r = walk(c, id);
+        if (r) return r;
+      }
+    }
+  }
+  if (n.type === "cluster")
+    for (const c of n.children) {
+      const r = walk(c, id);
+      if (r) return r;
+    }
+  return undefined;
+}
+function srcVariantWorld(f: PhyFile, id: string): typeof ident {
+  const rec = (ns: Node[], w: typeof ident): typeof ident | undefined => {
+    for (const n of ns) {
+      const nw = compose(w, matrix(n.transform));
+      if (n.type === "variantGroup")
+        for (const v of n.children) {
+          if (v.id === id) return nw;
+          const r = rec(v.children, nw);
+          if (r) return r;
+        }
+      if (n.type === "cluster") {
+        const r = rec(n.children, nw);
+        if (r) return r;
+      }
+    }
+    return undefined;
+  };
+  const x = rec(f.root, ident);
+  if (!x) throw new Error(`Unknown variant ${id}`);
+  return x;
+}
+function srcVariantRotation(f: PhyFile, id: string): number {
+  const rec = (nodes: Node[], parentRotation: number): number | undefined => {
+    for (const n of nodes) {
+      const angle = parentRotation + n.transform.rotation;
+      if (n.type === "variantGroup")
+        for (const v of n.children) {
+          if (v.id === id) return angle;
+          const found = rec(v.children, angle);
+          if (found !== undefined) return found;
+        }
+      if (n.type === "cluster") {
+        const found = rec(n.children, angle);
+        if (found !== undefined) return found;
+      }
+    }
+    return undefined;
+  };
+  const found = rec(f.root, 0);
+  if (found === undefined) throw new Error(`Unknown variant ${id}`);
+  return found;
+}
+/** クラスターの座標枠を変え、配下の絶対位置を保つ。PHY-P-13仮決定。 */
+export function reframe(f: PhyFile, id: string, frame: Transform): PhyFile {
+  const o = mutable(f),
+    n = find(o, id);
+  if (n.type !== "cluster") throw new Error(`${id} is not a cluster`);
+  const c = containers(o).get(id)!,
+    oldRotation = c.parentRotation + n.transform.rotation,
+    old = compose(c.parentWorld, matrix(n.transform)),
+    next = compose(c.parentWorld, matrix(frame)),
+    correction = compose(inverse(next), old);
+  n.children = n.children.map((ch) => {
+    const t = compose(correction, matrix(ch.transform));
+    return {
+      ...ch,
+      transform: {
+        x: t.e,
+        y: t.f,
+        rotation: oldRotation + ch.transform.rotation - (c.parentRotation + frame.rotation),
+      },
+    } as Node;
+  });
+  n.transform = { ...frame };
+  return o;
+}
+/** VariantGroupを作成する。T-11。 */
+export function createVariantGroup(
+  f: PhyFile,
+  name: string,
+  at: Transform,
+  variants: [{ name: string; children?: Node[] }, { name: string; children?: Node[] }],
+  gen?: () => string,
+): PhyFile {
+  return createVariantGroupInParent(f, null, name, at, variants, gen);
+}
+/** 指定コンテナへVariantGroupを作成する。T-11。 */
+export function createVariantGroupInParent(
+  f: PhyFile,
+  parentId: string | null,
+  name: string,
+  at: Transform,
+  variants: [{ name: string; children?: Node[] }, { name: string; children?: Node[] }],
+  gen?: () => string,
+): PhyFile {
+  const o = mutable(f),
+    children = variants.map((x) => ({
+      type: "variant" as const,
+      id: nodeId("variant", gen),
+      name: x.name,
+      children: structuredClone(x.children ?? []),
+    }));
+  parentNodes(o, parentId).push({
+    type: "variantGroup",
+    id: nodeId("variantGroup", gen),
+    name,
+    transform: { ...at },
+    default: children[0]!.id,
+    children,
+  });
+  return o;
+}
+/** Variantを追加する。T-11。 */
+export function addVariant(f: PhyFile, groupId: string, name: string, gen?: () => string): PhyFile {
+  const o = mutable(f),
+    g = find(o, groupId);
+  if (g.type !== "variantGroup") throw new Error("Not a variant group");
+  g.children.push({ type: "variant", id: nodeId("variant", gen), name, children: [] });
+  return o;
+}
+/** Variantを削除する。子が1つになる場合は拒否し、default削除時は先頭へ移す。T-15。 */
+export function deleteVariant(f: PhyFile, groupId: string, variantId: string): PhyFile {
+  const o = mutable(f),
+    g = find(o, groupId);
+  if (g.type !== "variantGroup") throw new Error("Not a variant group");
+  if (g.children.length <= 2) throw new Error("Cannot leave a VariantGroup with fewer than two variants");
+  const i = g.children.findIndex((v) => v.id === variantId);
+  if (i < 0) throw new Error("Unknown variant");
+  g.children.splice(i, 1);
+  if (g.default === variantId) g.default = g.children[0]!.id;
+  return o;
+}
+/** default Variantを変更する。 */
+export function setDefaultVariant(f: PhyFile, groupId: string, variantId: string): PhyFile {
+  const o = mutable(f),
+    g = find(o, groupId);
+  if (g.type !== "variantGroup" || !g.children.some((v) => v.id === variantId))
+    throw new Error("Invalid group or variant");
+  g.default = variantId;
+  return o;
+}
+/** ノードを削除する。 */
+export function deleteNode(f: PhyFile, id: string): PhyFile {
+  const o = mutable(f),
+    c = containers(o).get(id);
+  if (!c) throw new Error(`Unknown node: ${id}`);
+  const i = c.nodes.findIndex((n) => n.id === id);
+  c.nodes.splice(i, 1);
+  return o;
+}
+/** ノードと配下を複製し、すべてのIDを新しくする。T-11。 */
+export function duplicateNode(f: PhyFile, id: string, gen?: () => string): PhyFile {
+  const o = mutable(f),
+    n = find(o, id),
+    copy = cloneNodesWithNewIds([n], gen)[0]!;
+  copy.transform.x += 0.25;
+  copy.transform.y += 0.25;
+  const c = containers(o).get(id)!;
+  c.nodes.splice(c.nodes.indexOf(n) + 1, 0, copy);
+  return o;
+}
+/** ノード群を複製し、配下のIDと閉じたdefault参照を振り直す。T-11。 */
+export function cloneNodesWithNewIds(nodes: Node[], gen?: () => string): Node[] {
+  const copies = structuredClone(nodes);
+  const remap = new Map<string, string>();
+  const renew = (x: Node) => {
+    const oldId = x.id;
+    x.id = nodeId(x.type, gen);
+    remap.set(oldId, x.id);
+    if (x.type === "cluster") x.children.forEach(renew);
+    if (x.type === "variantGroup")
+      for (const v of x.children) {
+        const oldVariantId = v.id;
+        v.id = nodeId("variant", gen);
+        remap.set(oldVariantId, v.id);
+        v.children.forEach(renew);
+      }
+  };
+  copies.forEach(renew);
+  const remapDefaults = (x: Node) => {
+    if (x.type === "cluster") x.children.forEach(remapDefaults);
+    if (x.type === "variantGroup") {
+      x.default = remap.get(x.default) ?? x.default;
+      x.children.forEach((v) => v.children.forEach(remapDefaults));
+    }
+  };
+  copies.forEach(remapDefaults);
+  return copies;
+}

mock/src/domain/phyReference.ts

@@ -0,0 +1,11 @@
+import type { PhyFile } from "./phy";
+import type { PhyReference } from "./idx";
+import { sha256Jcs } from "../io/json";
+/** Computes the project-local PHY reference checksum. T-12. */
+export async function makePhyReference(phy: PhyFile, source = "project:phy"): Promise<PhyReference> {
+  return { source, checksum: await sha256Jcs(phy) };
+}
+/** Checks whether a stored checksum matches PHY. T-12. */
+export async function phyReferenceMatches(phy: PhyFile, ref: PhyReference): Promise<boolean> {
+  return ref.checksum === (await sha256Jcs(phy));
+}

mock/src/domain/project.ts

@@ -0,0 +1,64 @@
+import type { PhyFile, Node } from "./phy";
+import { createId } from "./ids";
+import { importKle } from "../io/kleImport";
+import { sha256Jcs } from "../io/json";
+import { createIdx, type IdxFile } from "./idx";
+import { createElc, type ElcFile } from "./elc";
+import { createMap, type MapFile } from "./map";
+export type MatrixOutputSettings = {
+  rowPins: string[];
+  colPins: string[];
+  kind?: "matrix" | "charlieplexing" | "direct";
+  [key: string]: unknown;
+};
+export type ProjectFile = {
+  format: "beyond-kle-mock-project";
+  version: string;
+  projectId: string;
+  phy: PhyFile;
+  elc: ElcFile;
+  idx: IdxFile;
+  map: MapFile;
+  output: { variantSelection: Record<string, string>; matrix?: MatrixOutputSettings; [key: string]: unknown };
+  ui?: unknown;
+  [key: string]: unknown;
+};
+/** Creates default variant selections from PHY. T-10/T-20. */
+export function defaultVariantSelection(phy: PhyFile): Record<string, string> {
+  const out: Record<string, string> = {};
+  const walk = (nodes: Node[]) =>
+    nodes.forEach((n) => {
+      if (n.type === "cluster") walk(n.children);
+      if (n.type === "variantGroup") {
+        out[n.id] = n.default;
+        const v = n.children.find((x) => x.id === n.default);
+        if (v) walk(v.children);
+      }
+    });
+  walk(phy.root);
+  return out;
+}
+/** Creates an empty project with default reference values. T-10/T-13. */
+export async function createProject(phy: PhyFile, gen?: () => string): Promise<ProjectFile> {
+  const ref = { source: "project:phy", checksum: await sha256Jcs(phy) };
+  return {
+    format: "beyond-kle-mock-project",
+    version: "0.1.0",
+    projectId: createId("project-", gen),
+    phy: structuredClone(phy),
+    elc: createElc(ref),
+    idx: createIdx(phy, [], ref),
+    map: createMap(ref),
+    output: { variantSelection: defaultVariantSelection(phy) },
+  };
+}
+/** Imports KLE as a new project and initializes IDX from occurrence order. T-18. */
+export async function createProjectFromKle(
+  input: unknown,
+  options: { idGenerator?: () => string; name?: string; projectIdGenerator?: () => string } = {},
+): Promise<ProjectFile> {
+  const { phy, keyOrder } = importKle(input, options);
+  const p = await createProject(phy, options.projectIdGenerator);
+  p.idx = createIdx(phy, keyOrder, p.idx.phyReference);
+  return p;
+}

mock/src/domain/rows.ts

@@ -0,0 +1,105 @@
+/** Axis-aligned key rectangle in one coordinate frame, in U. */
+export type KeyRect = { id: string; x: number; y: number; w: number; h: number };
+
+const EPS = 1e-3;
+/** Keys farther apart than this across adjacent lines are not linked. */
+const MAX_LINK = 1;
+
+type Point = { id: string; along: number; across: number };
+
+/**
+ * Detects visual rows, top to bottom, each listing key ids left to right.
+ * The aligned axis is grouped by coordinate and the staggered axis is traced through
+ * adjacent lines (idx-editor-feedback.md). Keys are placed by their top-left corner,
+ * so tall keys belong to their top row and wide keys to their left column.
+ */
+export function detectRows(keys: KeyRect[]): string[][] {
+  return detectLines(keys, "row");
+}
+/** Detects visual columns, left to right, each listing key ids top to bottom. */
+export function detectColumns(keys: KeyRect[]): string[][] {
+  return detectLines(keys, "column");
+}
+
+function detectLines(keys: KeyRect[], kind: "row" | "column"): string[][] {
+  const points: Point[] = keys.map((k) =>
+    kind === "row" ? { id: k.id, along: k.x, across: k.y } : { id: k.id, along: k.y, across: k.x },
+  );
+  const rowsAligned = groupBy(keys, (k) => k.y).length <= groupBy(keys, (k) => k.x).length;
+  return (kind === "row") === rowsAligned ? groupLines(points) : traceLines(points);
+}
+
+/** Clusters values within EPS, ordered by value. */
+function groupBy<T>(items: T[], value: (item: T) => number): T[][] {
+  const sorted = [...items].sort((a, b) => value(a) - value(b));
+  const groups: T[][] = [];
+  for (const item of sorted) {
+    const last = groups.at(-1);
+    if (last && value(item) - value(last.at(-1)!) <= EPS) last.push(item);
+    else groups.push([item]);
+  }
+  return groups;
+}
+
+function groupLines(points: Point[]): string[][] {
+  return groupBy(points, (p) => p.across).map((line) => sortAlong(line).map((p) => p.id));
+}
+
+/** Links each pair of adjacent cross lines one-to-one by nearest `across`, then joins the links. */
+function traceLines(points: Point[]): string[][] {
+  const cross = groupBy(points, (p) => p.along);
+  const parent = new Map(points.map((p) => [p.id, p.id]));
+  const find = (id: string): string => {
+    const up = parent.get(id)!;
+    if (up === id) return id;
+    const root = find(up);
+    parent.set(id, root);
+    return root;
+  };
+  for (let i = 0; i + 1 < cross.length; i++) {
+    const pairs = cross[i]!.flatMap((a) =>
+      cross[i + 1]!.map((b) => ({ a, b, d: Math.abs(a.across - b.across) })),
+    )
+      .filter((pair) => pair.d < MAX_LINK)
+      .sort((p, q) => p.d - q.d);
+    const used = new Set<string>();
+    for (const { a, b } of pairs) {
+      if (used.has(a.id) || used.has(b.id)) continue;
+      used.add(a.id);
+      used.add(b.id);
+      parent.set(find(b.id), find(a.id));
+    }
+  }
+  const lines = new Map<string, Point[]>();
+  for (const p of points) lines.set(find(p.id), [...(lines.get(find(p.id)) ?? []), p]);
+  return [...lines.values()]
+    .map(sortAlong)
+    .sort((a, b) => mean(a) - mean(b) || a[0]!.along - b[0]!.along)
+    .map((line) => line.map((p) => p.id));
+}
+
+function sortAlong(line: Point[]): Point[] {
+  return [...line].sort((a, b) => a.along - b.along);
+}
+
+function mean(line: Point[]): number {
+  return line.reduce((sum, p) => sum + p.across, 0) / line.length;
+}
+
+/** Position right after the last key of the row containing `keyId`. */
+export function rowEndPosition(keys: KeyRect[], keyId: string): { x: number; y: number } | undefined {
+  const row = detectRows(keys).find((line) => line.includes(keyId));
+  if (!row) return undefined;
+  const byId = new Map(keys.map((k) => [k.id, k]));
+  const last = row.map((id) => byId.get(id)!).reduce((a, b) => (b.x + b.w > a.x + a.w ? b : a));
+  return { x: last.x + last.w, y: last.y };
+}
+
+/** Leftmost position of a new row below every key. */
+export function newRowPosition(keys: KeyRect[]): { x: number; y: number } | undefined {
+  if (!keys.length) return undefined;
+  return {
+    x: Math.min(...keys.map((k) => k.x)),
+    y: Math.max(...keys.map((k) => k.y + k.h)),
+  };
+}

mock/src/domain/stabilizers.ts

@@ -0,0 +1,66 @@
+import type { Point, Size } from "./phy";
+import { hasSecondRect } from "./keyShape";
+
+/** One candidate stabilizer layout: two mounts at ±offset along the key's long axis, in U. */
+export type StabilizerCandidate = { id: string; label: string; offset: number };
+
+const MM = 1 / 19.05;
+/** Cherry MX spacings by key length. provisional/decisions.md「単位8のスタビ候補」. */
+const TABLE: { lengths: number[]; candidates: StabilizerCandidate[] }[] = [
+  {
+    lengths: [2, 2.25, 2.5, 2.75],
+    candidates: [{ id: "11.938mm", label: "±11.938mm", offset: 11.938 * MM }],
+  },
+  { lengths: [3], candidates: [{ id: "1u", label: "±1U", offset: 1 }] },
+  { lengths: [4], candidates: [{ id: "1.5u", label: "±1.5U", offset: 1.5 }] },
+  { lengths: [4.5], candidates: [{ id: "34.671mm", label: "±34.671mm", offset: 34.671 * MM }] },
+  { lengths: [5.5], candidates: [{ id: "2.25u", label: "±2.25U", offset: 2.25 }] },
+  {
+    lengths: [6],
+    candidates: [
+      { id: "2.5u", label: "±2.5U", offset: 2.5 },
+      { id: "2u", label: "±2U", offset: 2 },
+    ],
+  },
+  {
+    lengths: [6.25],
+    candidates: [
+      { id: "50mm", label: "±50mm", offset: 50 * MM },
+      { id: "40mm", label: "±40mm", offset: 40 * MM },
+      { id: "42.5mm", label: "±42.5mm", offset: 42.5 * MM },
+    ],
+  },
+  { lengths: [6.5], candidates: [{ id: "2.75u", label: "±2.75U", offset: 2.75 }] },
+  { lengths: [7], candidates: [{ id: "3u", label: "±3U", offset: 3 }] },
+  { lengths: [8, 9, 9.75, 10], candidates: [{ id: "3.5u", label: "±3.5U", offset: 3.5 }] },
+];
+
+const EPS = 1e-9;
+export function stabilizerCandidates(size: Size): StabilizerCandidate[] {
+  // Non-rectangular keys (ISO Enter, BAE, stepped) have no candidates yet.
+  if (hasSecondRect(size)) return [];
+  const length = Math.max(size.w, size.h);
+  return TABLE.find((row) => row.lengths.some((l) => Math.abs(l - length) < EPS))?.candidates ?? [];
+}
+/** Mount points in key-local coordinates, around the (w, h) rectangle's center, not the switch. */
+export function stabilizerPoints(size: Size, ids: string[]): Point[] {
+  const cx = size.w / 2,
+    cy = size.h / 2,
+    vertical = size.h > size.w;
+  return stabilizerCandidates(size)
+    .filter((c) => ids.includes(c.id))
+    .flatMap((c) =>
+      vertical
+        ? [
+            { x: cx, y: cy - c.offset },
+            { x: cx, y: cy + c.offset },
+          ]
+        : [
+            { x: cx - c.offset, y: cy },
+            { x: cx + c.offset, y: cy },
+          ],
+    );
+}
+export function switchPoint(key: { size: Size; switchOffset?: Point }): Point {
+  return { x: key.size.w / 2 + (key.switchOffset?.x ?? 0), y: key.size.h / 2 + (key.switchOffset?.y ?? 0) };
+}

mock/src/domain/validate.ts

@@ -0,0 +1,354 @@
+import type { ProjectFile } from "./project";
+import { flattenKeys } from "./geometry";
+import type { Node } from "./phy";
+import { eligibleKeyIds, unregisteredKeys } from "./idx";
+import { parseKeycode } from "./map";
+import { validateSchema } from "../io/validateSchema";
+export type ValidationIssue = {
+  severity: "blocksSave" | "blocksOutput" | "warning";
+  code: string;
+  message: string;
+  path?: string;
+  ids?: string[];
+};
+/** Performs semantic validation of a complete mock project. T-13/T-16/T-21/T-25. */
+export function validateProject(p: ProjectFile): ValidationIssue[] {
+  const out: ValidationIssue[] = [];
+  for (const layer of ["phy", "idx", "elc", "map"] as const)
+    for (const e of validateSchema(layer, p[layer]))
+      out.push({ severity: "blocksSave", code: "schema", message: e.message, path: `${layer}${e.path}` });
+  if (p.format !== "beyond-kle-mock-project")
+    out.push({
+      severity: "blocksSave",
+      code: "project-format",
+      message: "Unsupported ProjectFile format",
+      path: "/format",
+    });
+  if (p.version !== "0.1.0")
+    out.push({
+      severity: "blocksSave",
+      code: "version",
+      message: "Unsupported ProjectFile version",
+      path: "/version",
+    });
+  for (const layer of ["phy", "idx", "elc", "map"] as const)
+    if (p[layer].version !== "0.1.0")
+      out.push({
+        severity: "blocksSave",
+        code: "version",
+        message: `Unsupported ${layer} version`,
+        path: `/${layer}/version`,
+      });
+  const ids = new Map<string, string[]>();
+  const add = (id: string, path: string) => ids.set(id, [...(ids.get(id) ?? []), path]);
+  const walk = (ns: Node[], path: string) =>
+    ns.forEach((n, i) => {
+      const q = `${path}/${i}`;
+      add(n.id, q);
+      if (n.type === "cluster") walk(n.children, q + "/children");
+      if (n.type === "variantGroup") {
+        if (!n.children.some((v) => v.id === n.default))
+          out.push({
+            severity: "blocksSave",
+            code: "missing-default-variant",
+            message: "VariantGroup default does not reference a child",
+            path: q + "/default",
+            ids: [n.id, n.default],
+          });
+        for (const v of n.children) {
+          add(v.id, q + "/children");
+          walk(v.children, q + `/children/${v.id}/children`);
+        }
+      }
+    });
+  walk(p.phy.root, "/phy/root");
+  for (const [id, paths] of ids)
+    if (paths.length > 1)
+      out.push({
+        severity: "blocksSave",
+        code: "duplicate-id",
+        message: "Duplicate PHY node ID",
+        ids: [id],
+        path: paths[1],
+      });
+  const nodes = new Set(ids.keys()),
+    keys = new Set(eligibleKeyIds(p.phy));
+  const ref = (id: string, path: string, valid: Set<string> = nodes) => {
+    if (!valid.has(id))
+      out.push({
+        severity: "blocksSave",
+        code: "missing-reference",
+        message: `Unknown reference: ${id}`,
+        path,
+        ids: [id],
+      });
+  };
+  p.idx.order.forEach((id, i) => ref(id, `/idx/order/${i}`, keys));
+  p.elc.keys.forEach((k, i) => ref(k.key, `/elc/keys/${i}/key`, keys));
+  p.elc.ledChains?.forEach((c, i) => c.order.forEach((id, j) => ref(id, `/elc/ledChains/${i}/order/${j}`)));
+  p.map.layers.forEach((l, i) =>
+    l.keymap.forEach((a, j) => {
+      ref(a.keyId, `/map/layers/${i}/keymap/${j}/keyId`, keys);
+      const keycode = parseKeycode(a.keycode);
+      if (keycode.kind === "layer" && !p.map.layers.some((candidate) => candidate.name === keycode.layer))
+        out.push({
+          severity: "blocksSave",
+          code: "missing-map-layer-reference",
+          message: `Unknown MAP layer reference: ${keycode.layer}`,
+          path: `/map/layers/${i}/keymap/${j}/keycode`,
+          ids: [l.name, keycode.layer ?? ""],
+        });
+    }),
+  );
+
+  const providerIds = new Map<string, number>();
+  p.elc.providers.forEach((provider, index) => {
+    const first = providerIds.get(provider.id);
+    if (first !== undefined)
+      out.push({
+        severity: "blocksSave",
+        code: "duplicate-provider-id",
+        message: "Provider IDs must be unique",
+        path: `/elc/providers/${index}/id`,
+        ids: [provider.id],
+      });
+    else providerIds.set(provider.id, index);
+    if (!provider.id || provider.id.includes("."))
+      out.push({
+        severity: "blocksSave",
+        code: "invalid-provider-id",
+        message: "Provider IDs must be nonempty and cannot contain '.'",
+        path: `/elc/providers/${index}/id`,
+        ids: [provider.id],
+      });
+  });
+  const chainIds = new Set<string>();
+  p.elc.ledChains?.forEach((chain, index) => {
+    if (chainIds.has(chain.id))
+      out.push({
+        severity: "blocksSave",
+        code: "duplicate-led-chain-id",
+        message: "LED chain IDs must be unique",
+        path: `/elc/ledChains/${index}/id`,
+        ids: [chain.id],
+      });
+    chainIds.add(chain.id);
+  });
+  const wiredKeys = new Set<string>();
+  p.elc.keys.forEach((wiring, index) => {
+    if (wiredKeys.has(wiring.key))
+      out.push({
+        severity: "blocksSave",
+        code: "duplicate-key-wiring",
+        message: "A key may have only one ELC wiring entry",
+        path: `/elc/keys/${index}/key`,
+        ids: [wiring.key],
+      });
+    wiredKeys.add(wiring.key);
+  });
+
+  const validatePinRef = (pin: string, path: string) => {
+    if (pin === "VCC" || pin === "GND") return;
+    const parts = pin.split(".");
+    const providerId = parts[0];
+    const pinName = parts[1];
+    if (parts.length !== 2 || !providerId || !pinName) {
+      out.push({
+        severity: "blocksSave",
+        code: "invalid-pin-reference",
+        message: `Malformed PinRef: ${pin}`,
+        path,
+        ids: [pin],
+      });
+      return;
+    }
+    const provider = p.elc.providers.find((candidate) => candidate.id === providerId);
+    if (!provider) {
+      out.push({
+        severity: "blocksSave",
+        code: "missing-pin-provider",
+        message: `Unknown PinRef provider: ${providerId}`,
+        path,
+        ids: [providerId, pin],
+      });
+      return;
+    }
+    let valid = true;
+    if (provider.kind === "analog-mux")
+      valid = /^(0|[1-9]\d*)$/.test(pinName) && Number(pinName) < provider.channels;
+    else if (provider.part.toUpperCase() === "RP2040") valid = /^GP(?:[0-9]|[12][0-9])$/.test(pinName);
+    if (!valid)
+      out.push({
+        severity: "blocksSave",
+        code: "unknown-provider-pin",
+        message: `Unknown pin ${pinName} on provider ${providerId}`,
+        path,
+        ids: [providerId, pinName],
+      });
+  };
+  p.elc.providers.forEach((provider, index) => {
+    if (provider.kind === "analog-mux") {
+      provider.select.forEach((pin, i) => validatePinRef(pin, `/elc/providers/${index}/select/${i}`));
+      validatePinRef(provider.common, `/elc/providers/${index}/common`);
+      if (provider.enable !== undefined) validatePinRef(provider.enable, `/elc/providers/${index}/enable`);
+    }
+  });
+  p.elc.keys.forEach((wiring, index) =>
+    Object.entries(wiring.terminals).forEach(([terminal, pin]) =>
+      validatePinRef(pin, `/elc/keys/${index}/terminals/${terminal}`),
+    ),
+  );
+  p.elc.ledChains?.forEach((chain, index) => validatePinRef(chain.data, `/elc/ledChains/${index}/data`));
+  p.output.matrix?.rowPins.forEach((pin, index) => validatePinRef(pin, `/output/matrix/rowPins/${index}`));
+  p.output.matrix?.colPins.forEach((pin, index) => validatePinRef(pin, `/output/matrix/colPins/${index}`));
+  const profileIds = new Set(p.phy.profiles.map((x) => x.id));
+  const checkProfiles = (ns: Node[]) =>
+    ns.forEach((n, i) => {
+      if (n.type === "key" && !profileIds.has(n.profile))
+        out.push({
+          severity: "blocksSave",
+          code: "missing-profile",
+          message: `Unknown profile: ${n.profile}`,
+          path: `/phy/key/${n.id}/profile`,
+          ids: [n.id, n.profile],
+        });
+      if (n.type === "cluster") checkProfiles(n.children);
+      if (n.type === "variantGroup") n.children.forEach((v) => checkProfiles(v.children));
+    });
+  checkProfiles(p.phy.root);
+  for (const [i, pr] of p.phy.profiles.entries()) {
+    if (pr.unitSize.x <= 0 || pr.unitSize.y <= 0)
+      out.push({
+        severity: "blocksSave",
+        code: "positive-unit-size",
+        message: "unitSize values must be positive",
+        path: `/phy/profiles/${i}/unitSize`,
+      });
+  }
+  const keyWalk = (ns: Node[]) =>
+    ns.forEach((n) => {
+      if (n.type === "key" && (n.size.w <= 0 || n.size.h <= 0))
+        out.push({
+          severity: "blocksSave",
+          code: "positive-key-size",
+          message: "Key size values must be positive",
+          path: `/phy/key/${n.id}/size`,
+          ids: [n.id],
+        });
+      if (n.type === "cluster") keyWalk(n.children);
+      if (n.type === "variantGroup") n.children.forEach((v) => keyWalk(v.children));
+    });
+  keyWalk(p.phy.root);
+  const unreg = unregisteredKeys(p.phy, p.idx);
+  for (const id of unreg)
+    out.push({
+      severity: "blocksOutput",
+      code: "idx-unregistered",
+      message: "Eligible key is not in IDX order",
+      ids: [id],
+    });
+  const profileSizes = p.phy.profiles.map((x) => `${x.unitSize.x},${x.unitSize.y}`);
+  if (new Set(profileSizes).size > 1)
+    out.push({
+      severity: "warning",
+      code: "unit-size-mismatch",
+      message: "Profile unitSize values differ; geometry editing is restricted",
+      path: "/phy/profiles",
+    });
+  let active: string[] = [];
+  try {
+    active = flattenKeys(p.phy, p.output.variantSelection)
+      .filter((x) => !x.key.decal)
+      .map((x) => x.key.id);
+  } catch (e) {
+    out.push({ severity: "blocksSave", code: "invalid-variant-selection", message: String(e) });
+  }
+  for (const id of active) {
+    if (!p.elc.keys.some((k) => k.key === id))
+      out.push({
+        severity: "blocksOutput",
+        code: "unwired-key",
+        message: "Selected key has no wiring",
+        ids: [id],
+      });
+    for (const l of p.map.layers)
+      if (!l.keymap.some((a) => a.keyId === id))
+        out.push({
+          severity: "blocksOutput",
+          code: "unassigned-key",
+          message: `Selected key is not assigned in layer ${l.name}`,
+          ids: [id, l.name],
+        });
+  }
+  const branches = new Map<string, Array<[string, string]>>();
+  const exclusivity = (ns: Node[], branch: Array<[string, string]>) =>
+    ns.forEach((n) => {
+      if (n.type === "key") branches.set(n.id, branch);
+      if (n.type === "cluster") exclusivity(n.children, branch);
+      if (n.type === "variantGroup")
+        for (const v of n.children) exclusivity(v.children, [...branch, [n.id, v.id]]);
+    });
+  exclusivity(p.phy.root, []);
+  const mutuallyExclusive = (a: string, b: string) => {
+    for (const [group, variant] of branches.get(a) ?? [])
+      if ((branches.get(b) ?? []).some(([g, v]) => g === group && v !== variant)) return true;
+    return false;
+  };
+  const unordered = (a: string, b: string) => (a < b ? `${a}\0${b}` : `${b}\0${a}`);
+  const contacts = p.elc.keys.filter((w) => w.detect === "contact");
+  for (let i = 0; i < contacts.length; i++)
+    for (let j = i + 1; j < contacts.length; j++) {
+      const a = contacts[i]!,
+        b = contacts[j]!;
+      if (a.key === b.key || mutuallyExclusive(a.key, b.key)) continue;
+      const ap = a.diode
+        ? a.diode === "a-to-b"
+          ? [a.terminals.a, a.terminals.b]
+          : [a.terminals.b, a.terminals.a]
+        : null;
+      const bp = b.diode
+        ? b.diode === "a-to-b"
+          ? [b.terminals.a, b.terminals.b]
+          : [b.terminals.b, b.terminals.a]
+        : null;
+      const same =
+        ap && bp
+          ? ap[0] === bp[0] && ap[1] === bp[1]
+          : unordered(a.terminals.a, a.terminals.b) === unordered(b.terminals.a, b.terminals.b);
+      if (same)
+        out.push({
+          severity: "blocksOutput",
+          code: "wiring-collision",
+          message: "Non-exclusive keys share the same electrical connection",
+          ids: [a.key, b.key],
+        });
+    }
+  const layerNames = new Set<string>();
+  for (const [i, l] of p.map.layers.entries()) {
+    if (layerNames.has(l.name))
+      out.push({
+        severity: "blocksSave",
+        code: "duplicate-layer-name",
+        message: "Layer names must be unique",
+        path: `/map/layers/${i}/name`,
+        ids: [l.name],
+      });
+    layerNames.add(l.name);
+  }
+  for (const [li, l] of p.map.layers.entries()) {
+    const assignments = new Map<string, number>();
+    for (const [ai, a] of l.keymap.entries()) {
+      const prev = assignments.get(a.keyId);
+      if (prev !== undefined)
+        out.push({
+          severity: "blocksSave",
+          code: "duplicate-map-key",
+          message: "A key may occur only once in a layer keymap",
+          path: `/map/layers/${li}/keymap/${ai}/keyId`,
+          ids: [a.keyId, l.name],
+        });
+      assignments.set(a.keyId, ai);
+    }
+  }
+  return out;
+}

mock/src/env.d.ts

@@ -0,0 +1,5 @@
+declare module "*.vue" {
+  import type { DefineComponent } from "vue";
+  const component: DefineComponent<object, object, unknown>;
+  export default component;
+}

mock/src/io/json.ts

@@ -0,0 +1,26 @@
+/** RFC 8785 JCS の UTF-8 対象文字列を生成する。T-12。 */
+export function canonicalize(value: unknown): string {
+  return encode(value);
+}
+function encode(v: unknown): string {
+  if (v === null) return "null";
+  if (typeof v === "string") return JSON.stringify(v);
+  if (typeof v === "boolean") return v ? "true" : "false";
+  if (typeof v === "number") {
+    if (!Number.isFinite(v)) throw new TypeError("JCS does not support non-finite numbers");
+    return JSON.stringify(Object.is(v, -0) ? 0 : v);
+  }
+  if (Array.isArray(v)) return `[${v.map(encode).join(",")}]`;
+  if (typeof v === "object") {
+    const o = v as Record<string, unknown>;
+    const keys = Object.keys(o).sort();
+    return `{${keys.map((k) => `${JSON.stringify(k)}:${encode(o[k])}`).join(",")}}`;
+  }
+  throw new TypeError(`Unsupported JCS value: ${typeof v}`);
+}
+/** JCS正規化したUTF-8をSHA-256し、指定形式で返す。T-12。 */
+export async function sha256Jcs(value: unknown): Promise<string> {
+  const bytes = new TextEncoder().encode(canonicalize(value));
+  const digest = await globalThis.crypto.subtle.digest("SHA-256", bytes);
+  return `sha256-jcs:${Array.from(new Uint8Array(digest), (b) => b.toString(16).padStart(2, "0")).join("")}`;
+}

mock/src/io/kleExport.ts

@@ -0,0 +1,88 @@
+import type { FlatKey, KleCompatibility, PhyFile } from "../domain/phy";
+import { flattenKeys } from "../domain/geometry";
+import { labelsToKle } from "./kleImport";
+
+type Obj = Record<string, unknown>;
+const defaults: KleCompatibility = { c: "#cccccc", t: "#000000", p: "", a: 4, f: 3, sm: "", sb: "", st: "" };
+
+/** PHYをバリアント選択に従ってKLE JSONへ平坦化する。座標は6桁丸め。T-20。 */
+export function exportKle(phy: PhyFile, variantSelection: Record<string, string> = {}): unknown[] {
+  const keys = flattenKeys(phy, variantSelection);
+  const order = [...keys].sort((a, b) => a.rotation - b.rotation || a.y - b.y || a.x - b.x);
+  const centers = new Map<number, { x: number; y: number }>();
+  for (const key of order) if (!centers.has(key.rotation)) centers.set(key.rotation, { x: key.x, y: key.y });
+  const previous: KleCompatibility = { ...defaults };
+  let previousGhost = false;
+  const rows: unknown[] = [];
+
+  for (const flat of order) {
+    const key = flat.key;
+    const center = centers.get(flat.rotation)!;
+    const rad = (flat.rotation * Math.PI) / 180;
+    const dx = flat.x - center.x;
+    const dy = flat.y - center.y;
+    const localX = center.x + Math.cos(rad) * dx + Math.sin(rad) * dy;
+    const localY = center.y - Math.sin(rad) * dx + Math.cos(rad) * dy;
+    const compat = { ...defaults, ...(key.kleCompatibility ?? {}) };
+    const cfg: Obj = {
+      r: flat.rotation,
+      rx: round(center.x),
+      ry: round(center.y),
+      x: round(localX - center.x),
+      y: round(localY - center.y),
+    };
+
+    for (const field of ["c", "t", "p", "a", "sm", "sb", "st"] as const) {
+      const next = compat[field];
+      if (!same(next, previous[field])) cfg[field] = structuredClone(next);
+      previous[field] = structuredClone(next);
+    }
+    const oldOverride = previous.fa !== undefined ? "fa" : previous.f2 !== undefined ? "f2" : "none";
+    const nextOverride = compat.fa !== undefined ? "fa" : compat.f2 !== undefined ? "f2" : "none";
+    const fontChanged = !same(compat.f, previous.f);
+    if (fontChanged || (nextOverride === "none" && oldOverride !== "none")) cfg.f = compat.f;
+    if (nextOverride === "fa" && (oldOverride !== "fa" || !same(compat.fa, previous.fa)))
+      cfg.fa = structuredClone(compat.fa);
+    if (nextOverride === "f2" && (oldOverride !== "f2" || !same(compat.f2, previous.f2)))
+      cfg.f2 = structuredClone(compat.f2);
+    previous.f = structuredClone(compat.f);
+    delete previous.f2;
+    delete previous.fa;
+    if (nextOverride === "fa") previous.fa = structuredClone(compat.fa);
+    if (nextOverride === "f2") previous.f2 = structuredClone(compat.f2);
+
+    if (key.ghost !== previousGhost) {
+      cfg.g = key.ghost === true;
+      previousGhost = key.ghost === true;
+    }
+    if (key.decal) cfg.d = true;
+    if (compat.l === true) cfg.l = true;
+    if (compat.n === true) cfg.n = true;
+
+    const w = key.size.w;
+    const h = key.size.h;
+    if (w !== 1) cfg.w = round(w);
+    if (h !== 1) cfg.h = round(h);
+    if (key.size.x2 !== undefined && key.size.x2 !== 0) cfg.x2 = round(key.size.x2);
+    if (key.size.y2 !== undefined && key.size.y2 !== 0) cfg.y2 = round(key.size.y2);
+    const w2 = key.size.w2 ?? w;
+    const h2 = key.size.h2 ?? h;
+    if (w2 !== w) cfg.w2 = round(w2);
+    if (h2 !== h) cfg.h2 = round(h2);
+
+    rows.push([cfg, labelsToKle(key.labels, typeof compat.a === "number" ? compat.a : 4)]);
+  }
+  if (phy.kleCompatibility) rows.unshift(structuredClone(phy.kleCompatibility));
+  return rows;
+}
+
+/** KLE JSON文字列を生成する。 */
+export function stringifyKle(phy: PhyFile, selection: Record<string, string> = {}): string {
+  return JSON.stringify(exportKle(phy, selection));
+}
+function same(a: unknown, b: unknown): boolean {
+  return JSON.stringify(a) === JSON.stringify(b);
+}
+function round(value: number): number {
+  return Number(value.toFixed(6));
+}

mock/src/io/kleImport.ts

@@ -0,0 +1,192 @@
+import type { KleCompatibility, KeyNode, PhyFile } from "../domain/phy";
+import { createNodeId } from "../domain/ids";
+
+type Obj = Record<string, unknown>;
+type Atom = string | Obj;
+
+// Output slot -> newline-field index. These fixed tables reproduce KLE's a=0..7 layout.
+const labelMap: readonly (readonly (number | null)[])[] = [
+  [0, 8, 2, 6, 9, 7, 1, 10, 3, 4, 11, 5],
+  [null, 0, null, null, 6, null, null, 1, null, 4, 11, 5],
+  [null, null, null, 0, 8, 2, null, null, null, 4, 11, 5],
+  [null, null, null, null, 0, null, null, null, null, 4, 11, 5],
+  [0, 8, 2, 6, 9, 7, 1, 10, 3, null, 4, null],
+  [null, 0, null, null, 6, null, null, 1, null, null, 4, null],
+  [null, null, null, 0, 8, 2, null, null, null, null, 4, null],
+  [null, null, null, null, 0, null, null, null, null, null, 4, null],
+];
+
+const fileDefaults: Obj = {
+  backcolor: "#eeeeee",
+  name: "",
+  author: "",
+  notes: "",
+  background: null,
+  radii: "",
+  switchMount: "",
+  switchBrand: "",
+  switchType: "",
+};
+const keyDefaults: Obj = { c: "#cccccc", t: "#000000", p: "", a: 4, f: 3, sm: "", sb: "", st: "" };
+
+function isObj(value: unknown): value is Obj {
+  return !!value && typeof value === "object" && !Array.isArray(value);
+}
+function num(value: unknown, fallback: number): number {
+  return typeof value === "number" && Number.isFinite(value) ? value : fallback;
+}
+function labelsFromKle(serialized: string, alignment: number): string[] {
+  const fields = serialized.split("\n");
+  if (fields.length > 12) throw new Error("A KLE label cannot exceed 12 slots");
+  const map = labelMap[alignment] ?? labelMap[4]!;
+  const labels = Array<string>(12).fill("");
+  map.forEach((field, slot) => {
+    if (field !== null && field < fields.length) labels[slot] = fields[field]!;
+  });
+  while (labels.at(-1) === "") labels.pop();
+  return labels;
+}
+function oneShotArray(state: Obj, key: string): void {
+  delete state[key];
+}
+
+/** KLEの厳密JSON（またはVIA layouts.keymap）を新規PHYへ取り込む。T-7/T-18/T-20。 */
+export function importKle(
+  input: unknown,
+  options: { idGenerator?: () => string; name?: string } = {},
+): { phy: PhyFile; keyOrder: string[] } {
+  let data: unknown = input;
+  if (isObj(data)) {
+    const layouts = data.layouts;
+    if (isObj(layouts) && Array.isArray(layouts.keymap)) data = layouts.keymap;
+    else throw new Error("Expected KLE array or VIA layouts.keymap");
+  }
+  if (!Array.isArray(data)) throw new Error("KLE input must be a JSON array");
+  const rows = [...data] as unknown[];
+  let rawMeta: Obj = {};
+  if (rows.length && isObj(rows[0])) rawMeta = rows.shift() as Obj;
+
+  const gen = options.idGenerator ?? (() => globalThis.crypto.randomUUID());
+  const state: Obj = { ...keyDefaults };
+  let cursorX = 0;
+  let cursorY = 0;
+  let rotation = 0;
+  let rotationX = 0;
+  let rotationY = 0;
+  const root: KeyNode[] = [];
+  const keyOrder: string[] = [];
+
+  for (const row of rows) {
+    if (!Array.isArray(row)) throw new Error("KLE rows must be arrays");
+    cursorX = rotationX;
+    for (const atom of row as Atom[]) {
+      if (typeof atom === "string") {
+        const w = num(state.w, 1);
+        const h = num(state.h, 1);
+        cursorX += num(state.x, 0);
+        cursorY += num(state.y, 0);
+        const radians = (rotation * Math.PI) / 180;
+        const dx = cursorX - rotationX;
+        const dy = cursorY - rotationY;
+        const x = rotationX + Math.cos(radians) * dx - Math.sin(radians) * dy;
+        const y = rotationY + Math.sin(radians) * dx + Math.cos(radians) * dy;
+        const a = num(state.a, 4);
+        const id = createNodeId("key", gen);
+        const labels = labelsFromKle(atom, a);
+        const compatibility: KleCompatibility = {
+          c: structuredClone(state.c),
+          t: structuredClone(state.t),
+          p: structuredClone(state.p),
+          a,
+          f: num(state.f, 3),
+          ...(state.f2 === undefined ? {} : { f2: structuredClone(state.f2) }),
+          ...(state.fa === undefined ? {} : { fa: structuredClone(state.fa) }),
+          l: state.l === true,
+          n: state.n === true,
+          sm: structuredClone(state.sm),
+          sb: structuredClone(state.sb),
+          st: structuredClone(state.st),
+        };
+        const w2 = num(state.w2, 0) || w;
+        const h2 = num(state.h2, 0) || h;
+        const key: KeyNode = {
+          type: "key",
+          id,
+          profile: "default",
+          transform: { x, y, rotation },
+          size: {
+            w,
+            h,
+            ...(num(state.x2, 0) === 0 ? {} : { x2: num(state.x2, 0) }),
+            ...(num(state.y2, 0) === 0 ? {} : { y2: num(state.y2, 0) }),
+            ...(w2 === w ? {} : { w2 }),
+            ...(h2 === h ? {} : { h2 }),
+          },
+          labels,
+          kleCompatibility: compatibility,
+        };
+        if (state.d === true) key.decal = true;
+        if (state.g === true) key.ghost = true;
+        root.push(key);
+        if (!key.decal) keyOrder.push(id);
+
+        cursorX += w;
+        for (const field of ["w", "h", "x", "y", "x2", "y2", "w2", "h2", "d", "l", "n"])
+          oneShotArray(state, field);
+      } else if (isObj(atom)) {
+        for (const [key, value] of Object.entries(atom)) {
+          if (key === "r") rotation = num(value, rotation);
+          else if (key === "rx") {
+            rotationX = num(value, rotationX);
+            cursorX = rotationX;
+            cursorY = rotationY;
+          } else if (key === "ry") {
+            rotationY = num(value, rotationY);
+            cursorX = rotationX;
+            cursorY = rotationY;
+          } else if (key === "f") {
+            state.f = value;
+            delete state.f2;
+            delete state.fa;
+          } else if (key === "f2") {
+            state.f2 = value;
+            delete state.fa;
+          } else if (key === "fa") {
+            state.fa = structuredClone(value);
+            delete state.f2;
+          } else state[key] = structuredClone(value);
+        }
+      } else throw new Error("KLE row entries must be strings or objects");
+    }
+    cursorY += 1;
+  }
+
+  const metadata = { ...fileDefaults, ...structuredClone(rawMeta) };
+  const phy: PhyFile = {
+    version: "0.1.0",
+    metadata: { ...(options.name ? { name: options.name } : {}) },
+    profiles: [{ id: "default", name: "Default", unitSize: { x: 19.05, y: 19.05 } }],
+    root,
+    kleCompatibility: metadata,
+  };
+  return { phy, keyOrder };
+}
+
+/** JSON文字列を厳密にパースして KLE を取り込む。 */
+export function parseKleJson(
+  json: string,
+  options: { idGenerator?: () => string; name?: string } = {},
+): ReturnType<typeof importKle> {
+  return importKle(JSON.parse(json) as unknown, options);
+}
+
+/** 正準12欄のラベルをKLEのa別固定欄順に戻す。 */
+export function labelsToKle(labels: string[] | undefined, alignment: number): string {
+  const map = labelMap[alignment] ?? labelMap[4]!;
+  const fields = Array<string>(12).fill("");
+  map.forEach((sourceSlot, slot) => {
+    if (sourceSlot !== null) fields[sourceSlot] = labels?.[slot] ?? "";
+  });
+  while (fields.at(-1) === "") fields.pop();
+  return fields.join("\n");
+}

mock/src/io/layoutImport.ts

@@ -0,0 +1,54 @@
+import { flattenKeys } from "../domain/geometry";
+import type { Placement } from "../domain/idxImport";
+import { importKle } from "./kleImport";
+
+type Obj = Record<string, unknown>;
+const isObj = (v: unknown): v is Obj => typeof v === "object" && v !== null && !Array.isArray(v);
+const num = (v: unknown, fallback = 0) => (typeof v === "number" ? v : fallback);
+
+/** Result of reading an existing definition. `layouts` lists the choices when one must be picked. */
+export type LayoutRead = { placements: Placement[]; layouts?: string[]; layout?: string };
+
+/** QMK keyboard.json/info.json layout names, or undefined when the input is not a QMK definition. */
+export function qmkLayoutNames(input: unknown): string[] | undefined {
+  if (!isObj(input) || !isObj(input.layouts) || Array.isArray(input.layouts.keymap)) return undefined;
+  const names = Object.entries(input.layouts)
+    .filter(([, v]) => isObj(v) && Array.isArray(v.layout))
+    .map(([name]) => name);
+  return names.length ? names : undefined;
+}
+
+/**
+ * Reads key placements, in definition order, from QMK `layouts.<NAME>.layout[]`, a VIA definition's
+ * `layouts.keymap`, or KLE JSON. KLE and VIA go through importKle so coordinates match the project.
+ * QMK r/rx/ry are read with the KLE meaning. Without `layout`, a QMK file with several layouts
+ * returns only the names. T-31.
+ */
+export function readLayoutPlacements(input: unknown, layout?: string): LayoutRead {
+  const names = qmkLayoutNames(input);
+  if (names) {
+    const name = layout ?? (names.length === 1 ? names[0] : undefined);
+    if (!name) return { placements: [], layouts: names };
+    const entries = ((input as { layouts: Obj }).layouts[name] as { layout: unknown[] }).layout;
+    return { placements: entries.filter(isObj).map(qmkPlacement), layouts: names, layout: name };
+  }
+  const { phy, keyOrder } = importKle(input);
+  const flat = new Map(flattenKeys(phy).map((k) => [k.key.id, k]));
+  const placements = keyOrder.flatMap((id) => {
+    const k = flat.get(id);
+    return k && !k.key.decal ? [{ x: k.x, y: k.y, rotation: k.rotation }] : [];
+  });
+  return { placements };
+}
+
+function qmkPlacement(e: Obj): Placement {
+  const x = num(e.x),
+    y = num(e.y),
+    r = num(e.r),
+    rx = num(e.rx),
+    ry = num(e.ry);
+  const a = (r * Math.PI) / 180,
+    c = Math.cos(a),
+    s = Math.sin(a);
+  return { x: rx + (x - rx) * c - (y - ry) * s, y: ry + (x - rx) * s + (y - ry) * c, rotation: r };
+}

mock/src/io/projectFile.ts

@@ -0,0 +1,177 @@
+import type { ProjectFile } from "../domain/project";
+import { validateProject, type ValidationIssue } from "../domain/validate";
+import { makePhyReference, phyReferenceMatches } from "../domain/phyReference";
+import { validateSchema, type LayerName } from "./validateSchema";
+
+export type ProjectReadResult = { project?: ProjectFile; errors: ValidationIssue[] };
+export type ProjectSaveResult = { json?: string; errors: ValidationIssue[] };
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return !!value && typeof value === "object" && !Array.isArray(value);
+}
+
+/** Validates project and output container shapes before semantic checks. T-10/T-16. */
+function validateProjectShape(value: unknown): ValidationIssue[] {
+  const errors: ValidationIssue[] = [];
+  if (!isRecord(value))
+    return [{ severity: "blocksSave", code: "schema", message: "Expected a ProjectFile object", path: "/" }];
+  const required = ["format", "version", "projectId", "phy", "idx", "elc", "map", "output"];
+  for (const field of required)
+    if (!(field in value))
+      errors.push({
+        severity: "blocksSave",
+        code: "schema",
+        message: `Missing required ProjectFile field: ${field}`,
+        path: `/${field}`,
+      });
+  if (value.format !== "beyond-kle-mock-project")
+    errors.push({
+      severity: "blocksSave",
+      code: "schema",
+      message: "Invalid ProjectFile format",
+      path: "/format",
+    });
+  if (typeof value.version !== "string")
+    errors.push({ severity: "blocksSave", code: "schema", message: "Expected a string", path: "/version" });
+  if (typeof value.projectId !== "string")
+    errors.push({ severity: "blocksSave", code: "schema", message: "Expected a string", path: "/projectId" });
+  for (const layer of ["phy", "idx", "elc", "map"] as const) {
+    if (!(layer in value)) continue;
+    for (const issue of validateSchema(layer, value[layer]))
+      errors.push({
+        severity: "blocksSave",
+        code: "schema",
+        message: issue.message,
+        path: `/${layer}${issue.path === "/" ? "" : issue.path}`,
+      });
+  }
+  const output = value.output;
+  if (!isRecord(output)) {
+    errors.push({ severity: "blocksSave", code: "schema", message: "Expected an object", path: "/output" });
+  } else {
+    if (!isRecord(output.variantSelection))
+      errors.push({
+        severity: "blocksSave",
+        code: "schema",
+        message: "Expected an object of variant IDs",
+        path: "/output/variantSelection",
+      });
+    else
+      for (const [key, variant] of Object.entries(output.variantSelection))
+        if (typeof variant !== "string")
+          errors.push({
+            severity: "blocksSave",
+            code: "schema",
+            message: "Expected a variant ID string",
+            path: `/output/variantSelection/${key}`,
+          });
+    if (output.matrix !== undefined) {
+      if (!isRecord(output.matrix))
+        errors.push({
+          severity: "blocksSave",
+          code: "schema",
+          message: "Expected an object",
+          path: "/output/matrix",
+        });
+      else {
+        for (const field of ["rowPins", "colPins"] as const) {
+          const pins = output.matrix[field];
+          if (!Array.isArray(pins) || pins.some((pin) => typeof pin !== "string"))
+            errors.push({
+              severity: "blocksSave",
+              code: "schema",
+              message: "Expected an array of pin references",
+              path: `/output/matrix/${field}`,
+            });
+        }
+        if (
+          output.matrix.kind !== undefined &&
+          !["matrix", "charlieplexing", "direct"].includes(String(output.matrix.kind))
+        )
+          errors.push({
+            severity: "blocksSave",
+            code: "schema",
+            message: "Unknown output scan mode",
+            path: "/output/matrix/kind",
+          });
+      }
+    }
+  }
+  return errors;
+}
+
+/** Serializes a project and refreshes PHY references unless T-16 blocks saving. T-12/T-13. */
+export async function saveProject(project: ProjectFile, pretty = false): Promise<ProjectSaveResult> {
+  const shapeErrors = validateProjectShape(project);
+  if (shapeErrors.length) return { errors: shapeErrors };
+  const errors = validateProject(project);
+  if (errors.some((issue) => issue.severity === "blocksSave")) return { errors };
+
+  const p = structuredClone(project);
+  const ref = await makePhyReference(p.phy);
+  for (const layer of ["idx", "elc", "map"] as const)
+    p[layer].phyReference = { ...p[layer].phyReference, ...ref };
+  return { json: JSON.stringify(p, null, pretty ? 2 : undefined), errors };
+}
+
+/** Parses a project, checking all schemas before semantic validation and retaining unknown fields. T-13/T-14. */
+export async function loadProject(json: string): Promise<ProjectReadResult> {
+  let data: unknown;
+  try {
+    data = JSON.parse(json) as unknown;
+  } catch (e) {
+    return { errors: [{ severity: "blocksSave", code: "invalid-json", message: String(e) }] };
+  }
+  const errors = validateProjectShape(data);
+  if (errors.length) return { errors };
+
+  const project = data as ProjectFile;
+  const semantic = validateProject(project);
+  const unsupportedVersion = semantic.filter((issue) => issue.code === "version");
+  if (unsupportedVersion.length) return { errors: semantic };
+  for (const layer of ["idx", "elc", "map"] as const)
+    if (!(await phyReferenceMatches(project.phy, project[layer].phyReference)))
+      semantic.push({
+        severity: "warning",
+        code: "phy-reference-mismatch",
+        message: `${layer} PHY checksum does not match the current PHY`,
+        path: `/${layer}/phyReference`,
+      });
+  return { project, errors: semantic };
+}
+
+/** Writes a single layer as JSON. */
+export function writeLayer(layer: LayerName, value: unknown, pretty = false): string {
+  const errors = validateSchema(layer, value);
+  if (errors.length) throw new Error(errors.map((issue) => `${issue.path} ${issue.message}`).join("; "));
+  return JSON.stringify(value, null, pretty ? 2 : undefined);
+}
+
+/** Reads and schema-validates one layer file. */
+export function readLayer(layer: LayerName, json: string): { value?: unknown; errors: ValidationIssue[] } {
+  let value: unknown;
+  try {
+    value = JSON.parse(json) as unknown;
+  } catch (e) {
+    return { errors: [{ severity: "blocksSave", code: "invalid-json", message: String(e) }] };
+  }
+  const errors = validateSchema(layer, value).map((issue) => ({
+    severity: "blocksSave" as const,
+    code: "schema",
+    message: issue.message,
+    path: issue.path,
+  }));
+  if (
+    value &&
+    typeof value === "object" &&
+    "version" in value &&
+    (value as { version?: unknown }).version !== "0.1.0"
+  )
+    errors.push({
+      severity: "blocksSave",
+      code: "version",
+      message: "Unsupported layer version",
+      path: "/version",
+    });
+  return errors.length ? { errors } : { value, errors: [] };
+}

mock/src/io/schemas/elc.schema.json

@@ -0,0 +1,134 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://beyond-kle.org/schemas/elc-layer.json",
+  "title": "ELC Layer - Electrical Wiring",
+  "description": "Wiring between provider pins and key terminals",
+  "type": "object",
+  "required": ["version", "phyReference", "providers", "keys"],
+  "properties": {
+    "version": { "type": "string" },
+    "phyReference": {
+      "type": "object",
+      "required": ["source", "checksum"],
+      "properties": {
+        "source": { "type": "string" },
+        "checksum": { "type": "string" }
+      }
+    },
+    "providers": {
+      "type": "array",
+      "items": { "$ref": "#/$defs/provider" }
+    },
+    "keys": {
+      "type": "array",
+      "items": { "$ref": "#/$defs/keyWiring" }
+    },
+    "ledChains": {
+      "type": "array",
+      "items": { "$ref": "#/$defs/ledChain" }
+    }
+  },
+  "$defs": {
+    "pinRef": {
+      "type": "string",
+      "pattern": "^(VCC|GND|[^.]+\\.[^.]+)$",
+      "description": "\"<provider id>.<pin name>\", or the reserved power rails VCC / GND"
+    },
+    "provider": {
+      "oneOf": [{ "$ref": "#/$defs/mcuProvider" }, { "$ref": "#/$defs/analogMuxProvider" }]
+    },
+    "mcuProvider": {
+      "type": "object",
+      "required": ["id", "kind", "part"],
+      "properties": {
+        "id": { "type": "string" },
+        "kind": { "const": "mcu" },
+        "part": {
+          "type": "string",
+          "description": "Part number. Used to interpret pin names"
+        }
+      }
+    },
+    "analogMuxProvider": {
+      "type": "object",
+      "required": ["id", "kind", "channels", "select", "common"],
+      "properties": {
+        "id": { "type": "string" },
+        "kind": { "const": "analog-mux" },
+        "channels": {
+          "type": "integer",
+          "minimum": 1,
+          "description": "Number of logical pins provided. Pin names are \"0\"..\"channels-1\""
+        },
+        "select": {
+          "type": "array",
+          "items": { "$ref": "#/$defs/pinRef" },
+          "description": "Select pins, least significant bit first"
+        },
+        "common": { "$ref": "#/$defs/pinRef" },
+        "enable": { "$ref": "#/$defs/pinRef" }
+      }
+    },
+    "keyWiring": {
+      "oneOf": [{ "$ref": "#/$defs/contactKey" }, { "$ref": "#/$defs/analogKey" }]
+    },
+    "contactKey": {
+      "type": "object",
+      "required": ["key", "detect", "terminals"],
+      "properties": {
+        "key": {
+          "type": "string",
+          "description": "Reference to PHY layer key ID"
+        },
+        "detect": { "const": "contact" },
+        "terminals": {
+          "type": "object",
+          "description": "Non-polar. a and b carry no ordering meaning",
+          "required": ["a", "b"],
+          "properties": {
+            "a": { "$ref": "#/$defs/pinRef" },
+            "b": { "$ref": "#/$defs/pinRef" }
+          }
+        },
+        "diode": {
+          "type": "string",
+          "enum": ["a-to-b", "b-to-a"],
+          "description": "Anode side comes first. Omitted means no diode"
+        }
+      }
+    },
+    "analogKey": {
+      "type": "object",
+      "required": ["key", "detect", "terminals"],
+      "properties": {
+        "key": {
+          "type": "string",
+          "description": "Reference to PHY layer key ID"
+        },
+        "detect": { "const": "analog" },
+        "terminals": {
+          "type": "object",
+          "required": ["out", "vcc", "gnd"],
+          "properties": {
+            "out": { "$ref": "#/$defs/pinRef" },
+            "vcc": { "$ref": "#/$defs/pinRef" },
+            "gnd": { "$ref": "#/$defs/pinRef" }
+          }
+        }
+      }
+    },
+    "ledChain": {
+      "type": "object",
+      "required": ["id", "data", "order"],
+      "properties": {
+        "id": { "type": "string" },
+        "data": { "$ref": "#/$defs/pinRef" },
+        "order": {
+          "type": "array",
+          "items": { "type": "string" },
+          "description": "PHY node IDs. The position in the array is the LED number"
+        }
+      }
+    }
+  }
+}

mock/src/io/schemas/idx.schema.json

@@ -0,0 +1,28 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://beyond-kle.org/schemas/idx-layer.json",
+  "title": "IDX Layer - Key Identification",
+  "description": "Ordered PHY key IDs across all variants. Output key numbers are contiguous positions after filtering by variant selection",
+  "type": "object",
+  "required": ["version", "phyReference", "order"],
+  "properties": {
+    "version": { "type": "string" },
+    "phyReference": {
+      "type": "object",
+      "required": ["source", "checksum"],
+      "properties": {
+        "source": { "type": "string" },
+        "checksum": { "type": "string" }
+      }
+    },
+    "order": {
+      "type": "array",
+      "uniqueItems": true,
+      "description": "Each PHY key has its own entry, including mutually exclusive keys wired to the same terminals. Variant selection does not modify this list",
+      "items": {
+        "type": "string",
+        "description": "Reference to PHY layer key ID"
+      }
+    }
+  }
+}

mock/src/io/schemas/map.schema.json

@@ -0,0 +1,54 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://beyond-kle.org/schemas/map-layer.json",
+  "title": "MAP Layer - Keymap Configuration",
+  "description": "Key code assignments and layers",
+  "type": "object",
+  "required": ["version", "phyReference", "layers"],
+  "properties": {
+    "version": { "type": "string" },
+    "phyReference": {
+      "type": "object",
+      "required": ["source", "checksum"],
+      "properties": {
+        "source": { "type": "string" },
+        "checksum": { "type": "string" }
+      }
+    },
+    "layers": {
+      "type": "array",
+      "items": {
+        "$ref": "#/$defs/layer"
+      }
+    }
+  },
+  "$defs": {
+    "layer": {
+      "type": "object",
+      "required": ["name", "keymap"],
+      "properties": {
+        "name": {
+          "type": "string",
+          "description": "Layer identifier, unique within the MAP. Layer order is the array order"
+        },
+        "keymap": {
+          "type": "array",
+          "items": {
+            "$ref": "#/$defs/keyAssignment"
+          }
+        }
+      }
+    },
+    "keyAssignment": {
+      "type": "object",
+      "required": ["keyId", "keycode"],
+      "properties": {
+        "keyId": {
+          "type": "string",
+          "description": "Reference to PHY layer key ID"
+        },
+        "keycode": { "type": "string" }
+      }
+    }
+  }
+}

mock/src/io/schemas/phy.schema.json

@@ -0,0 +1,253 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://beyond-kle.org/schemas/phy-layer.json",
+  "title": "PHY Layer - Physical Key Layout",
+  "description": "Physical positioning and sizing of keys",
+  "type": "object",
+  "required": ["version", "metadata", "profiles", "root"],
+  "properties": {
+    "version": {
+      "type": "string",
+      "pattern": "^\\d+\\.\\d+\\.\\d+$",
+      "description": "Schema version (semver)"
+    },
+    "metadata": {
+      "type": "object",
+      "properties": {
+        "name": { "type": "string" },
+        "author": { "type": "string" },
+        "description": { "type": "string" },
+        "created": { "type": "string", "format": "date-time" },
+        "modified": { "type": "string", "format": "date-time" }
+      }
+    },
+    "kleCompatibility": {
+      "type": "object",
+      "description": "File-level opaque KLE fields kept for round-trip output (switchMount, switchBrand, switchType, backcolor, radii, background, css). Kept here for now; the eventual owning layer is deferred in backlog/README.md, PHY-P-6",
+      "additionalProperties": true
+    },
+    "profiles": {
+      "type": "array",
+      "minItems": 1,
+      "items": {
+        "$ref": "#/$defs/profile"
+      }
+    },
+    "root": {
+      "type": "array",
+      "items": {
+        "oneOf": [
+          { "$ref": "#/$defs/key" },
+          { "$ref": "#/$defs/cluster" },
+          { "$ref": "#/$defs/component" },
+          { "$ref": "#/$defs/variantGroup" }
+        ]
+      }
+    }
+  },
+  "$defs": {
+    "transform": {
+      "type": "object",
+      "description": "Placement relative to the parent: rotate by rotation around the local origin, then translate by (x, y)",
+      "required": ["x", "y", "rotation"],
+      "properties": {
+        "x": { "type": "number" },
+        "y": { "type": "number" },
+        "rotation": { "type": "number", "description": "Degrees" }
+      }
+    },
+    "profile": {
+      "type": "object",
+      "required": ["id", "name", "unitSize"],
+      "properties": {
+        "id": { "type": "string" },
+        "name": { "type": "string" },
+        "unitSize": {
+          "type": "object",
+          "description": "Millimeters per 1U",
+          "required": ["x", "y"],
+          "properties": {
+            "x": { "type": "number", "minimum": 0 },
+            "y": { "type": "number", "minimum": 0 }
+          }
+        },
+        "visualOffset": {
+          "type": "object",
+          "description": "Key top rectangle, in millimeters: inward distance from each edge of the outline, plus corner radius",
+          "required": ["top", "right", "bottom", "left", "radius"],
+          "properties": {
+            "top": { "type": "number" },
+            "right": { "type": "number" },
+            "bottom": { "type": "number" },
+            "left": { "type": "number" },
+            "radius": { "type": "number", "minimum": 0 }
+          }
+        }
+      }
+    },
+    "key": {
+      "type": "object",
+      "required": ["type", "id", "profile", "transform", "size"],
+      "properties": {
+        "type": {
+          "type": "string",
+          "const": "key"
+        },
+        "id": {
+          "type": "string",
+          "description": "Unique key identifier"
+        },
+        "profile": {
+          "type": "string",
+          "description": "Reference to profile ID"
+        },
+        "transform": { "$ref": "#/$defs/transform" },
+        "size": {
+          "type": "object",
+          "description": "Local size. Not affected by the parent transform",
+          "required": ["w", "h"],
+          "properties": {
+            "w": { "type": "number", "minimum": 0 },
+            "h": { "type": "number", "minimum": 0 },
+            "x2": {
+              "type": "number",
+              "description": "Second rectangle for non-rectangular keys, relative to the local origin"
+            },
+            "y2": { "type": "number" },
+            "w2": { "type": "number", "minimum": 0 },
+            "h2": { "type": "number", "minimum": 0 }
+          }
+        },
+        "switchOffset": {
+          "type": "object",
+          "description": "Switch position, offset from the center of the (w, h) rectangle. Key local coordinates, unit U. Defaults to 0",
+          "required": ["x", "y"],
+          "properties": {
+            "x": { "type": "number" },
+            "y": { "type": "number" }
+          }
+        },
+        "partGroup": {
+          "type": "string",
+          "description": "Label grouping keys that use the same part. Not interpreted by Beyond KLE"
+        },
+        "orientation": {
+          "type": "integer",
+          "enum": [0, 90, 180, 270],
+          "default": 0,
+          "description": "Switch orientation in the key local coordinates"
+        },
+        "perKeyLED": {
+          "type": "boolean",
+          "default": false,
+          "description": "Whether a per-key LED is mounted"
+        },
+        "decal": { "type": "boolean", "default": false },
+        "ghost": { "type": "boolean", "default": false },
+        "labels": {
+          "type": "array",
+          "items": { "type": "string" },
+          "description": "Reference information. Used for matching on KLE JSON import"
+        },
+        "kleCompatibility": {
+          "type": "object",
+          "description": "Opaque KLE fields kept for round-trip output (c, t, p, a, f, f2, fa, l, n, sm, sb, st). Kept here for now; the eventual owning layer is deferred in backlog/README.md, PHY-P-6",
+          "additionalProperties": true
+        }
+      }
+    },
+    "component": {
+      "type": "object",
+      "description": "Non-key part placed by the designer (LED, OLED, encoder, screw hole, ...)",
+      "required": ["type", "id", "transform"],
+      "properties": {
+        "type": {
+          "type": "string",
+          "const": "component"
+        },
+        "id": { "type": "string" },
+        "transform": { "$ref": "#/$defs/transform" },
+        "partGroup": {
+          "type": "string",
+          "description": "Names starting with @ are reserved for editor rendering"
+        }
+      }
+    },
+    "variantGroup": {
+      "type": "object",
+      "description": "Mutually exclusive layout alternatives. Children are variants only",
+      "required": ["type", "id", "name", "transform", "default", "children"],
+      "properties": {
+        "type": {
+          "type": "string",
+          "const": "variantGroup"
+        },
+        "id": { "type": "string" },
+        "name": {
+          "type": "string",
+          "description": "Heading shown for the choice in the editor"
+        },
+        "transform": { "$ref": "#/$defs/transform" },
+        "default": {
+          "type": "string",
+          "description": "id of the variant used when a single layout must be chosen"
+        },
+        "children": {
+          "type": "array",
+          "minItems": 2,
+          "description": "Display order",
+          "items": { "$ref": "#/$defs/variant" }
+        }
+      }
+    },
+    "variant": {
+      "type": "object",
+      "description": "One alternative. Appears only directly under a variantGroup. Carries no transform",
+      "required": ["type", "id", "name", "children"],
+      "properties": {
+        "type": {
+          "type": "string",
+          "const": "variant"
+        },
+        "id": { "type": "string" },
+        "name": { "type": "string" },
+        "children": {
+          "type": "array",
+          "description": "May be empty",
+          "items": {
+            "oneOf": [
+              { "$ref": "#/$defs/key" },
+              { "$ref": "#/$defs/cluster" },
+              { "$ref": "#/$defs/component" },
+              { "$ref": "#/$defs/variantGroup" }
+            ]
+          }
+        }
+      }
+    },
+    "cluster": {
+      "type": "object",
+      "required": ["type", "id", "transform", "children"],
+      "properties": {
+        "type": {
+          "type": "string",
+          "const": "cluster"
+        },
+        "id": { "type": "string" },
+        "name": { "type": "string" },
+        "transform": { "$ref": "#/$defs/transform" },
+        "children": {
+          "type": "array",
+          "items": {
+            "oneOf": [
+              { "$ref": "#/$defs/key" },
+              { "$ref": "#/$defs/cluster" },
+              { "$ref": "#/$defs/component" },
+              { "$ref": "#/$defs/variantGroup" }
+            ]
+          }
+        }
+      }
+    }
+  }
+}

mock/src/io/validateSchema.ts

@@ -0,0 +1,27 @@
+import Ajv2020 from "ajv/dist/2020";
+import addFormats from "ajv-formats";
+import phySchema from "./schemas/phy.schema.json";
+import idxSchema from "./schemas/idx.schema.json";
+import elcSchema from "./schemas/elc.schema.json";
+import mapSchema from "./schemas/map.schema.json";
+
+export type LayerName = "phy" | "idx" | "elc" | "map";
+export type SchemaIssue = { path: string; message: string };
+const ajv = new Ajv2020({ allErrors: true, strict: false });
+addFormats(ajv);
+const validators = {
+  phy: ajv.compile(phySchema),
+  idx: ajv.compile(idxSchema),
+  elc: ajv.compile(elcSchema),
+  map: ajv.compile(mapSchema),
+};
+/** Validates one layer against its draft 2020-12 schema. */
+export function validateSchema(layer: LayerName, value: unknown): SchemaIssue[] {
+  const valid = validators[layer](value);
+  return valid
+    ? []
+    : (validators[layer].errors ?? []).map((e) => ({
+        path: `${e.instancePath || "/"}${e.params && "missingProperty" in e.params ? `/${e.params.missingProperty}` : ""}`,
+        message: e.message ?? "Schema validation failed",
+      }));
+}

mock/src/main.ts

@@ -0,0 +1,4 @@
+import { createApp } from "vue";
+import App from "./ui/App.vue";
+
+createApp(App).mount("#app");

mock/src/ui/App.vue

@@ -0,0 +1,307 @@
+<script setup lang="ts">
+import { computed, onMounted, onUnmounted, ref, shallowRef } from "vue";
+import { createProjectFromKle } from "../domain/project";
+import type { ProjectFile } from "../domain/project";
+import { ProjectHistory } from "../domain/history";
+import { validateProject } from "../domain/validate";
+import { saveProject, loadProject } from "../io/projectFile";
+import { exportKle } from "../io/kleExport";
+import { defaultLayout } from "./defaultLayout";
+import type { Dispatch } from "./types";
+import PhyEditor from "./phy/PhyEditor.vue";
+import IdxEditor from "./idx/IdxEditor.vue";
+import ElcPanel from "./panels/ElcPanel.vue";
+import MapPanel from "./panels/MapPanel.vue";
+import GeneratorPanel from "./panels/GeneratorPanel.vue";
+const project = shallowRef<ProjectFile | null>(null),
+  activeTab = ref("PHY"),
+  errorText = ref("");
+const importInput = ref<HTMLInputElement>(),
+  openInput = ref<HTMLInputElement>();
+let history: ProjectHistory | null = null;
+const epoch = ref(0);
+const mismatch = computed(
+  () =>
+    !!project.value &&
+    new Set(project.value.phy.profiles.map((p) => `${p.unitSize.x},${p.unitSize.y}`)).size > 1,
+);
+const issues = computed(() => (project.value ? validateProject(project.value) : [])),
+  severity = ["blocksSave", "blocksOutput", "warning"] as const;
+const canUndo = computed(() => {
+    epoch.value;
+    return !!history?.canUndo;
+  }),
+  canRedo = computed(() => {
+    epoch.value;
+    return !!history?.canRedo;
+  });
+const dispatch: Dispatch = (label, update) => {
+  if (!project.value || mismatch.value) return;
+  const next = update(project.value);
+  project.value = next;
+  history?.push(next);
+  epoch.value++;
+  errorText.value = "";
+};
+function beginHistory() {
+  if (history) {
+    history.begin();
+    epoch.value++;
+  }
+}
+function commitHistory() {
+  if (history && project.value) {
+    history.commit(project.value);
+    epoch.value++;
+  }
+}
+function undo() {
+  if (history?.canUndo) {
+    project.value = history.undo();
+    epoch.value++;
+  }
+}
+function redo() {
+  if (history?.canRedo) {
+    project.value = history.redo();
+    epoch.value++;
+  }
+}
+function globalKey(e: KeyboardEvent) {
+  const target = e.target as HTMLElement | null;
+  if (target?.closest("input,textarea,select,[contenteditable=true]")) return;
+  const mod = e.ctrlKey || e.metaKey;
+  if (mod && e.key.toLowerCase() === "z") {
+    e.preventDefault();
+    e.shiftKey ? redo() : undo();
+  } else if (mod && e.key.toLowerCase() === "y") {
+    e.preventDefault();
+    redo();
+  } else if (mod && e.key.toLowerCase() === "s") {
+    e.preventDefault();
+    void save();
+  }
+}
+async function initialize() {
+  const p = await createProjectFromKle(defaultLayout, { name: "New keyboard" });
+  project.value = p;
+  history = new ProjectHistory(p);
+  epoch.value++;
+}
+onMounted(() => {
+  void initialize();
+  window.addEventListener("keydown", globalKey);
+});
+onUnmounted(() => window.removeEventListener("keydown", globalKey));
+async function readFile(file: File, mode: "kle" | "project") {
+  try {
+    const raw = JSON.parse(await file.text()) as unknown;
+    let p: ProjectFile;
+    if (mode === "kle") p = await createProjectFromKle(raw, { name: file.name });
+    else {
+      const r = await loadProject(JSON.stringify(raw));
+      if (!r.project) throw Error(r.errors.map((x) => x.message).join("; "));
+      p = r.project;
+      errorText.value = r.errors.map((x) => x.message).join("; ");
+    }
+    project.value = p;
+    history = new ProjectHistory(p);
+    epoch.value++;
+  } catch (e) {
+    errorText.value = String(e);
+  }
+}
+function download(name: string, text: string) {
+  const a = document.createElement("a");
+  a.href = URL.createObjectURL(new Blob([text], { type: "application/json" }));
+  a.download = name;
+  a.click();
+  URL.revokeObjectURL(a.href);
+}
+async function save() {
+  if (!project.value) return;
+  const r = await saveProject(project.value, true);
+  if (r.json) download(`${project.value.phy.metadata.name || "project"}.bkle.json`, r.json);
+  else errorText.value = r.errors.map((x) => x.message).join("; ");
+}
+function exportSelected() {
+  if (project.value)
+    download(
+      "layout.kle.json",
+      JSON.stringify(exportKle(project.value.phy, project.value.output.variantSelection), null, 2),
+    );
+}
+</script>
+<template>
+  <main v-if="project" class="app-shell" :class="{ locked: mismatch }">
+    <header class="toolbar">
+      <strong>Beyond KLE</strong><button @click="importInput?.click()">KLE JSONから新規</button
+      ><input
+        ref="importInput"
+        hidden
+        type="file"
+        accept=".json,application/json"
+        @change="
+          (e) => {
+            const f = (e.target as HTMLInputElement).files?.[0];
+            if (f) void readFile(f, 'kle');
+            (e.target as HTMLInputElement).value = '';
+          }
+        "
+      /><button @click="openInput?.click()">プロジェクトを開く</button
+      ><input
+        ref="openInput"
+        hidden
+        type="file"
+        accept=".json,application/json"
+        @change="
+          (e) => {
+            const f = (e.target as HTMLInputElement).files?.[0];
+            if (f) void readFile(f, 'project');
+            (e.target as HTMLInputElement).value = '';
+          }
+        "
+      /><button @click="save">プロジェクトを保存</button
+      ><button @click="exportSelected">KLE JSONを出力</button
+      ><button :disabled="!canUndo" @click="undo">Undo</button
+      ><button :disabled="!canRedo" @click="redo">Redo</button
+      ><span v-if="errorText" class="error">{{ errorText }}</span>
+    </header>
+    <nav class="tabs">
+      <button
+        v-for="t in ['PHY', 'IDX', 'ELC', 'MAP', 'Generator']"
+        :key="t"
+        :class="{ active: activeTab === t }"
+        @click="activeTab = t"
+      >
+        {{ t }}
+      </button>
+    </nav>
+    <PhyEditor
+      v-if="activeTab === 'PHY'"
+      :project="project"
+      :dispatch="dispatch"
+      :mismatch="mismatch"
+      :begin-history="beginHistory"
+      :commit-history="commitHistory"
+      @error="errorText = $event"
+    />
+    <IdxEditor
+      v-else-if="activeTab === 'IDX'"
+      :project="project"
+      :dispatch="dispatch"
+      @error="errorText = $event"
+    />
+    <section v-else class="other-panel">
+      <ElcPanel v-if="activeTab === 'ELC'" :project="project" :dispatch="dispatch" /><MapPanel
+        v-else-if="activeTab === 'MAP'"
+        :project="project"
+        :dispatch="dispatch"
+        :editable="!mismatch"
+      /><GeneratorPanel v-else :project="project" :dispatch="dispatch" />
+    </section>
+    <aside class="validation pane">
+      <h2>検証結果</h2>
+      <p v-if="issues.some((x) => x.severity === 'blocksSave')" class="warning" data-testid="save-blocked">
+        保存できない状態です。blocksSave の問題を解消してください。
+      </p>
+      <div class="issues">
+        <section v-for="s in severity" :key="s">
+          <h3>
+            {{ s }} <small>({{ issues.filter((x) => x.severity === s).length }})</small>
+          </h3>
+          <div v-for="(issue, i) in issues.filter((x) => x.severity === s)" :key="i" class="issue">
+            <b>{{ issue.code }}</b> {{ issue.message }} <small>{{ issue.path }}</small>
+          </div>
+          <p v-if="!issues.some((x) => x.severity === s)" class="muted">なし</p>
+        </section>
+      </div>
+    </aside>
+  </main>
+</template>
+<style>
+* {
+  box-sizing: border-box;
+}
+body {
+  margin: 0;
+  font:
+    14px system-ui,
+    sans-serif;
+  color: #20242b;
+  background: #edf0f4;
+}
+.app-shell {
+  height: 100vh;
+  display: grid;
+  grid-template-rows: 52px 42px minmax(300px, 1fr) 180px;
+  gap: 8px;
+  padding: 8px;
+}
+.toolbar,
+.tabs,
+.pane {
+  background: #fff;
+  border: 1px solid #cbd1da;
+  border-radius: 6px;
+}
+.toolbar {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 7px;
+}
+.toolbar strong {
+  margin-right: auto;
+}
+.tabs {
+  display: flex;
+  gap: 4px;
+  padding: 4px;
+}
+.tabs button.active {
+  background: #dce9ff;
+}
+.other-panel {
+  min-height: 0;
+}
+.validation {
+  overflow: hidden;
+  padding: 10px;
+}
+.validation h2 {
+  font-size: 16px;
+  margin: 0 0 8px;
+}
+.issues {
+  display: flex;
+  gap: 20px;
+  overflow: auto;
+}
+.issues section {
+  min-width: 240px;
+}
+.issues h3 {
+  font-size: 13px;
+}
+.issue {
+  margin: 3px 0;
+  background: #f4f6f9;
+  padding: 5px;
+}
+.issue small {
+  display: block;
+  color: #667;
+}
+.muted {
+  color: #778;
+}
+.warning,
+.error {
+  color: #9a4c00;
+}
+.error {
+  max-width: 240px;
+  overflow: hidden;
+}
+</style>

mock/src/ui/common/KeyboardView.vue

@@ -0,0 +1,135 @@
+<script setup lang="ts">
+// 選択構成の平坦な配置を読み取り専用で描く。IDX・ELC・MAP・Generatorのパネルで共有する。
+import { computed } from "vue";
+import { flattenKeys } from "../../domain/geometry";
+import type { FlatKey, PhyFile } from "../../domain/phy";
+
+const props = withDefaults(
+  defineProps<{
+    phy: PhyFile;
+    selection: Record<string, string>;
+    /** キーの中央に出す文字列。省略時は先頭のラベル */
+    keyText?: (keyId: string) => string;
+    /** キーに付けるCSSクラス(状態の色分け) */
+    keyClass?: (keyId: string) => string | undefined;
+    selectedIds?: string[];
+    unit?: number;
+  }>(),
+  { selectedIds: () => [], unit: 48 },
+);
+const emit = defineEmits<{ keyClick: [keyId: string, event: MouseEvent] }>();
+
+const keys = computed<FlatKey[]>(() => flattenKeys(props.phy, props.selection));
+
+// 回転を含めた四隅から表示範囲を求める
+const viewBox = computed(() => {
+  let minX = Infinity,
+    minY = Infinity,
+    maxX = -Infinity,
+    maxY = -Infinity;
+  for (const k of keys.value) {
+    const r = (k.rotation * Math.PI) / 180,
+      c = Math.cos(r),
+      s = Math.sin(r);
+    const { w, h } = k.key.size;
+    for (const [lx, ly] of [
+      [0, 0],
+      [w, 0],
+      [0, h],
+      [w, h],
+    ] as const) {
+      const x = k.x + lx * c - ly * s,
+        y = k.y + lx * s + ly * c;
+      minX = Math.min(minX, x);
+      minY = Math.min(minY, y);
+      maxX = Math.max(maxX, x);
+      maxY = Math.max(maxY, y);
+    }
+  }
+  if (!isFinite(minX)) return "0 0 4 2";
+  const pad = 0.25;
+  return `${minX - pad} ${minY - pad} ${maxX - minX + pad * 2} ${maxY - minY + pad * 2}`;
+});
+const width = computed(() => {
+  const parts = viewBox.value.split(" ").map(Number);
+  return (parts[2] ?? 4) * props.unit;
+});
+
+function text(k: FlatKey): string {
+  return props.keyText ? props.keyText(k.key.id) : (k.key.labels?.find((l) => l) ?? "");
+}
+</script>
+
+<template>
+  <svg class="keyboard-view" :viewBox="viewBox" :width="width" data-testid="keyboard-view">
+    <g
+      v-for="k in keys"
+      :key="k.key.id"
+      :transform="`translate(${k.x},${k.y}) rotate(${k.rotation})`"
+      :class="[
+        'kv-key',
+        keyClass?.(k.key.id),
+        { selected: selectedIds.includes(k.key.id), decal: k.key.decal, ghost: k.key.ghost },
+      ]"
+      :data-key-id="k.key.id"
+      @click="emit('keyClick', k.key.id, $event)"
+    >
+      <rect x="0.03" y="0.03" :width="k.key.size.w - 0.06" :height="k.key.size.h - 0.06" rx="0.08" />
+      <rect
+        v-if="k.key.size.w2 !== undefined || k.key.size.h2 !== undefined"
+        :x="(k.key.size.x2 ?? 0) + 0.03"
+        :y="(k.key.size.y2 ?? 0) + 0.03"
+        :width="(k.key.size.w2 ?? k.key.size.w) - 0.06"
+        :height="(k.key.size.h2 ?? k.key.size.h) - 0.06"
+        rx="0.08"
+      />
+      <text :x="k.key.size.w / 2" :y="k.key.size.h / 2" text-anchor="middle" dominant-baseline="central">
+        {{ text(k) }}
+      </text>
+    </g>
+  </svg>
+</template>
+
+<style scoped>
+.keyboard-view {
+  max-width: 100%;
+  height: auto;
+  user-select: none;
+}
+.kv-key {
+  cursor: pointer;
+}
+.kv-key rect {
+  fill: #f3f4f6;
+  stroke: #6b7280;
+  stroke-width: 0.02;
+}
+.kv-key text {
+  font-size: 0.22px;
+  fill: #111827;
+  pointer-events: none;
+}
+.kv-key.selected rect {
+  stroke: #2563eb;
+  stroke-width: 0.06;
+}
+.kv-key.decal rect {
+  stroke-dasharray: 0.06 0.04;
+  fill: none;
+}
+.kv-key.ghost {
+  opacity: 0.45;
+}
+.kv-key.warn rect {
+  fill: #fde68a;
+}
+.kv-key.error rect {
+  fill: #fecaca;
+}
+.kv-key.ok rect {
+  fill: #d1fae5;
+}
+.kv-key.muted rect {
+  fill: #e5e7eb;
+}
+</style>

mock/src/ui/defaultLayout.ts

@@ -0,0 +1,2 @@
+/** Small 4x4 starter layout, kept in src/ui rather than the test fixtures. */
+export const defaultLayout: unknown[] = Array.from({ length: 4 }, () => ["", "", "", ""]);

mock/src/ui/idx/IdxEditor.vue

@@ -0,0 +1,657 @@
+<script setup lang="ts">
+// IDX Editor。キャンバス上のドラッグとプリセットで order を並べ替える。T-31。
+import { computed, onMounted, onUnmounted, ref, watch } from "vue";
+import type { ProjectFile } from "../../domain/project";
+import { defaultVariantSelection } from "../../domain/project";
+import { flattenKeys } from "../../domain/geometry";
+import type { FlatKey, Node } from "../../domain/phy";
+import { appendKeys, unregisteredKeys } from "../../domain/idx";
+import { keyVariantGroups, renumber, type OrderContext } from "../../domain/idxOrder";
+import { keyRect, matrixPositions, matrixSequence, scanKeys, type ScanResult } from "../../domain/idxScan";
+import { matchPlacements, type Placement } from "../../domain/idxImport";
+import { fitViewport, zoomAround } from "../phy/viewport";
+import type { Dispatch } from "../types";
+import IdxTree from "./IdxTree.vue";
+import IdxPresets from "./IdxPresets.vue";
+import IdxImport from "./IdxImport.vue";
+import { applyDrop, keyCenter, outputNumbers, type DropAction } from "./logic";
+import { defaultPresetSettings, lineColors, type PresetSettings } from "./presets";
+import { useIdxPointer } from "./useIdxPointer";
+
+const props = defineProps<{ project: ProjectFile; dispatch: Dispatch }>();
+const emit = defineEmits<{ error: [text: string] }>();
+
+const variants = ref<Record<string, string>>({}),
+  selected = ref<string[]>([]),
+  zoom = ref(52),
+  pan = ref({ x: 50, y: 50 }),
+  size = ref({ w: 900, h: 600 }),
+  svg = ref<SVGSVGElement>(),
+  settings = ref<PresetSettings>(defaultPresetSettings()),
+  preview = ref<{ offsets: Map<number, number>; cross: number | null } | null>(null),
+  importMessage = ref("");
+
+/** Displayed configuration: starts from output.variantSelection, never written back. T-31. */
+function resetVariants() {
+  variants.value = {
+    ...defaultVariantSelection(props.project.phy),
+    ...props.project.output.variantSelection,
+  };
+}
+resetVariants();
+watch(
+  () => props.project.projectId,
+  () => {
+    resetVariants();
+    selected.value = [];
+    preview.value = null;
+    importMessage.value = "";
+    fit();
+  },
+);
+watch(
+  () => props.project.phy,
+  () => {
+    // groups made in PHY after opening get their default; removed keys leave the selection
+    variants.value = { ...defaultVariantSelection(props.project.phy), ...variants.value };
+    const shown = new Set(keys.value.map((k) => k.key.id));
+    selected.value = selected.value.filter((id) => shown.has(id));
+  },
+);
+
+const keys = computed<FlatKey[]>(() => {
+  try {
+    return flattenKeys(props.project.phy, variants.value).filter((k) => !k.key.decal);
+  } catch {
+    return flattenKeys(props.project.phy).filter((k) => !k.key.decal);
+  }
+});
+const keyById = computed(() => new Map(keys.value.map((k) => [k.key.id, k])));
+const visible = computed(() => new Set(keys.value.map((k) => k.key.id)));
+const registered = computed(() => new Set(props.project.idx.order));
+const allUnregistered = computed(() => new Set(unregisteredKeys(props.project.phy, props.project.idx)));
+const ctx = computed<OrderContext>(() => ({
+  visible: visible.value,
+  groups: keyVariantGroups(props.project.phy),
+}));
+const positions = computed(() => matrixPositions(props.project));
+
+// ---- preview of a preset ----
+const targetKeys = computed(() =>
+  settings.value.target === "selection"
+    ? keys.value.filter((k) => selected.value.includes(k.key.id))
+    : keys.value,
+);
+const scan = computed<ScanResult | null>(() => {
+  if (!preview.value) return null;
+  const target = targetKeys.value;
+  if (settings.value.kind === "matrix") {
+    const at = (id: string) => (registered.value.has(id) ? props.project.idx.order.indexOf(id) : Infinity);
+    const ids = target.map((k) => k.key.id).sort((a, b) => at(a) - at(b));
+    return { sequence: matrixSequence(ids, positions.value ?? new Map()), lines: [], crossLines: [] };
+  }
+  return scanKeys(target.map(keyRect), {
+    ...settings.value,
+    kind: settings.value.kind,
+    offsets: preview.value.offsets,
+  });
+});
+const shownOrder = computed(() =>
+  scan.value ? renumber(props.project.idx.order, ctx.value, scan.value.sequence) : props.project.idx.order,
+);
+const numbers = computed(() => outputNumbers(shownOrder.value, visible.value));
+const crossAxis = computed(() => (settings.value.kind === "columns" ? "row" : "column"));
+const shiftHint = computed(() => {
+  if (!scan.value?.crossLines.length) return "";
+  if (preview.value?.cross == null)
+    return `キーをクリックして${crossAxis.value === "column" ? "列" : "行"}を選ぶと、${crossAxis.value === "column" ? "↑/↓で行" : "←/→で列"}の割り当てを1つずらせます。`;
+  return `選んだ${crossAxis.value === "column" ? "列" : "行"}: ${crossAxis.value === "column" ? "↑/↓" : "←/→"}でずらす(${preview.value.offsets.get(preview.value.cross) ?? 0})。Escで取り消し。`;
+});
+const previewCross = computed(() => {
+  const i = preview.value?.cross;
+  return new Set(i == null ? [] : (scan.value?.crossLines[i] ?? []));
+});
+watch(
+  settings,
+  () => {
+    if (preview.value) preview.value = { offsets: new Map(), cross: null };
+  },
+  { deep: true },
+);
+watch(
+  () => [settings.value.target, selected.value.length] as const,
+  ([target, count]) => {
+    if (target === "selection" && !count) settings.value = { ...settings.value, target: "all" };
+  },
+);
+function startPreview() {
+  preview.value = { offsets: new Map(), cross: null };
+}
+function applyPreview() {
+  if (!scan.value) return;
+  const sequence = scan.value.sequence;
+  run("IDXプリセット適用", (p) => ({
+    ...p,
+    idx: { ...p.idx, order: renumber(p.idx.order, ctx.value, sequence) },
+  }));
+  preview.value = null;
+}
+function shiftCross(delta: number) {
+  const p = preview.value;
+  if (!p || p.cross == null) return;
+  const offsets = new Map(p.offsets);
+  offsets.set(p.cross, (offsets.get(p.cross) ?? 0) + delta);
+  preview.value = { ...p, offsets };
+}
+function pickCross(id: string) {
+  const i = scan.value?.crossLines.findIndex((line) => line.includes(id)) ?? -1;
+  if (preview.value) preview.value = { ...preview.value, cross: i < 0 ? null : i };
+}
+function linePoints(ids: string[]): string {
+  return ids
+    .map((id) => keyById.value.get(id))
+    .filter((k): k is FlatKey => !!k)
+    .map((k) => {
+      const c = keyCenter(k);
+      return `${c.x},${c.y}`;
+    })
+    .join(" ");
+}
+
+// ---- editing ----
+function run(label: string, update: (p: ProjectFile) => ProjectFile) {
+  try {
+    props.dispatch(label, update);
+  } catch (e) {
+    emit("error", String(e));
+  }
+}
+function drop(source: string, action: DropAction) {
+  run(action.kind === "swap" ? "IDX入れ替え" : "IDX挿入", (p) => ({
+    ...p,
+    idx: { ...p.idx, order: applyDrop(p.idx.order, ctx.value, source, action) },
+  }));
+}
+function registerAll() {
+  run("IDX未登録キーを登録", (p) => ({ ...p, idx: appendKeys(p.idx, unregisteredKeys(p.phy, p.idx)) }));
+}
+function importPlacements(placements: Placement[], source: string) {
+  const { ids, unmatched } = matchPlacements(placements, keys.value);
+  if (ids.length)
+    run("IDX取り込み", (p) => ({ ...p, idx: { ...p.idx, order: renumber(p.idx.order, ctx.value, ids) } }));
+  const missing = keys.value.length - ids.length;
+  importMessage.value =
+    `${source}: ${ids.length}件を照合して並べ直しました。` +
+    (unmatched ? `定義側の${unmatched}件は表示中のキーと一致しませんでした。` : "") +
+    (missing ? `表示中の${missing}件は定義になく、今の順序のまま残しました。` : "");
+}
+function selectVariant(groupId: string, variantId: string) {
+  variants.value = { ...variants.value, [groupId]: variantId };
+  const shown = new Set(keys.value.map((k) => k.key.id));
+  selected.value = selected.value.filter((id) => shown.has(id));
+}
+
+const { drag, band, spaceHeld, begin, move, end, cancel } = useIdxPointer({
+  svg,
+  zoom,
+  pan,
+  selected,
+  keys: () => keys.value,
+  registered: () => registered.value,
+  previewing: () => !!preview.value,
+  onDrop: drop,
+  onPreviewPick: pickCross,
+});
+const dropText = computed(() => {
+  const action = drag.value?.action;
+  if (!drag.value) return "";
+  if (!action) return "ここには置けません";
+  const n = numbers.value.get(action.target)!;
+  if (action.kind === "swap") return `${n} と入れ替え`;
+  return action.after
+    ? `${n} と ${n + 1} の間に挿入`
+    : n === 0
+      ? "先頭に挿入"
+      : `${n - 1} と ${n} の間に挿入`;
+});
+
+// ---- selection info ----
+const info = computed(() => {
+  const id = selected.value.at(-1);
+  const k = id ? keyById.value.get(id) : undefined;
+  if (!k || !id) return null;
+  const names = new Map<string, string>();
+  const walk = (nodes: Node[]) =>
+    nodes.forEach((n) => {
+      if (n.type === "cluster") walk(n.children);
+      if (n.type === "variantGroup")
+        n.children.forEach((v) => {
+          names.set(v.id, `${n.name} / ${v.name}`);
+          walk(v.children);
+        });
+    });
+  walk(props.project.phy.root);
+  const path = k.path.flatMap((p) => (names.has(p) ? [names.get(p)!] : []));
+  const saved = props.project.idx.order.indexOf(id);
+  return {
+    label: k.key.labels?.find(Boolean) || "(ラベルなし)",
+    id,
+    saved,
+    number: numbers.value.get(id),
+    path: path.join(" › ") || "共通キー",
+  };
+});
+
+// ---- viewport ----
+function fit() {
+  const rects = keys.value.map(keyRect);
+  if (!rects.length) return;
+  const x = Math.min(...rects.map((r) => r.x)),
+    y = Math.min(...rects.map((r) => r.y));
+  const bounds = {
+    x,
+    y,
+    width: Math.max(...rects.map((r) => r.x + r.w)) - x,
+    height: Math.max(...rects.map((r) => r.y + r.h)) - y,
+  };
+  const v = fitViewport(bounds, size.value.w, size.value.h);
+  zoom.value = v.zoom;
+  pan.value = v.pan;
+}
+function wheel(event: WheelEvent) {
+  const el = svg.value;
+  if (!el) return;
+  const local = new DOMPoint(event.clientX, event.clientY).matrixTransform(el.getScreenCTM()!.inverse());
+  const v = zoomAround(local, { zoom: zoom.value, pan: pan.value }, Math.exp(-event.deltaY * 0.001));
+  zoom.value = v.zoom;
+  pan.value = v.pan;
+}
+const bounds = computed(() => {
+  const rects = keys.value.map(keyRect);
+  return rects.length
+    ? {
+        top: Math.min(...rects.map((r) => r.y)) - 0.4,
+        bottom: Math.max(...rects.map((r) => r.y + r.h)) + 0.4,
+      }
+    : { top: 0, bottom: 1 };
+});
+
+function keydown(e: KeyboardEvent) {
+  const target = e.target as HTMLElement | null;
+  if (target?.closest("input,textarea,select,[contenteditable=true]")) return;
+  if (e.code === "Space") spaceHeld.value = true;
+  if (e.key === "Escape") {
+    if (drag.value) cancel();
+    else if (preview.value) preview.value = null;
+    else selected.value = [];
+  } else if (preview.value?.cross != null && e.key.startsWith("Arrow")) {
+    const vertical = crossAxis.value === "column";
+    const delta = {
+      ArrowUp: vertical ? -1 : 0,
+      ArrowDown: vertical ? 1 : 0,
+      ArrowLeft: vertical ? 0 : -1,
+      ArrowRight: vertical ? 0 : 1,
+    }[e.key];
+    if (delta) {
+      e.preventDefault();
+      shiftCross(delta);
+    }
+  } else if ((e.ctrlKey || e.metaKey) && e.key.toLowerCase() === "a") {
+    e.preventDefault();
+    selected.value = keys.value.map((k) => k.key.id);
+  } else if (e.key === "Enter" && preview.value) applyPreview();
+}
+function keyup(e: KeyboardEvent) {
+  if (e.code === "Space") spaceHeld.value = false;
+}
+let observer: ResizeObserver | null = null;
+onMounted(() => {
+  window.addEventListener("keydown", keydown);
+  window.addEventListener("keyup", keyup);
+  if (svg.value) {
+    observer = new ResizeObserver((entries) => {
+      const rect = entries[0]!.contentRect;
+      size.value = { w: rect.width, h: rect.height };
+      fit();
+    });
+    observer.observe(svg.value);
+  }
+  fit();
+});
+onUnmounted(() => {
+  window.removeEventListener("keydown", keydown);
+  window.removeEventListener("keyup", keyup);
+  observer?.disconnect();
+});
+</script>
+
+<template>
+  <section class="workspace">
+    <aside class="tree pane">
+      <h2>構成</h2>
+      <IdxTree
+        :nodes="project.phy.root"
+        :variants="variants"
+        :unregistered="allUnregistered"
+        @select="selectVariant"
+      />
+      <p v-if="!Object.keys(variants).length" class="hint">バリアントグループはありません。</p>
+    </aside>
+    <section class="canvas-pane pane">
+      <div class="canvas-toolbar">
+        <button @click="fit">全体表示</button>
+        <span class="status" data-testid="idx-status">{{
+          drag
+            ? dropText
+            : preview
+              ? "プレビュー中(適用するまで保存されません)"
+              : "キーをドラッグして並べ替え。左右の端で挿入、中央で入れ替え"
+        }}</span>
+      </div>
+      <svg
+        ref="svg"
+        class="canvas"
+        :class="{ previewing: !!preview, panning: spaceHeld }"
+        data-testid="idx-canvas"
+        :viewBox="`0 0 ${size.w} ${size.h}`"
+        @wheel.prevent="wheel"
+        @pointerdown="begin($event)"
+        @pointermove="move"
+        @pointerup="end"
+        @pointercancel="cancel"
+      >
+        <g :transform="`translate(${pan.x} ${pan.y}) scale(${zoom})`">
+          <g
+            v-for="k in keys"
+            :key="k.key.id"
+            class="key"
+            :data-key-id="k.key.id"
+            :transform="`translate(${k.x} ${k.y}) rotate(${k.rotation})`"
+            :class="{
+              chosen: selected.includes(k.key.id),
+              unregistered: !registered.has(k.key.id),
+              ghost: k.key.ghost,
+              dragging: drag?.id === k.key.id,
+              cross: previewCross.has(k.key.id),
+            }"
+            @pointerdown.stop="begin($event, k.key.id)"
+          >
+            <rect :width="k.key.size.w" :height="k.key.size.h" rx=".06" class="face" />
+            <text class="label" x=".08" y=".22">{{ k.key.labels?.find(Boolean) }}</text>
+            <!-- 番号は回転したキーでも正立させる -->
+            <text
+              class="number"
+              data-testid="idx-number"
+              :x="k.key.size.w / 2"
+              :y="k.key.size.h / 2 + 0.12"
+              :transform="`rotate(${-k.rotation} ${k.key.size.w / 2} ${k.key.size.h / 2})`"
+            >
+              {{ numbers.has(k.key.id) ? numbers.get(k.key.id) : "未登録" }}
+            </text>
+          </g>
+          <template v-if="scan">
+            <polyline
+              v-for="(line, i) in scan.lines"
+              :key="i"
+              class="scan-line"
+              :points="linePoints(line)"
+              :stroke="lineColors[i % lineColors.length]"
+            />
+            <line
+              v-if="scan.boundary !== undefined"
+              class="boundary"
+              data-testid="idx-boundary"
+              :x1="scan.boundary"
+              :x2="scan.boundary"
+              :y1="bounds.top"
+              :y2="bounds.bottom"
+            />
+          </template>
+          <g
+            v-if="drag?.action && keyById.get(drag.action.target)"
+            :transform="`translate(${keyById.get(drag.action.target)!.x} ${keyById.get(drag.action.target)!.y}) rotate(${keyById.get(drag.action.target)!.rotation})`"
+            class="drop-mark"
+          >
+            <rect
+              v-if="drag.action.kind === 'swap'"
+              class="swap-mark"
+              :width="keyById.get(drag.action.target)!.key.size.w"
+              :height="keyById.get(drag.action.target)!.key.size.h"
+              rx=".06"
+            />
+            <line
+              v-else
+              class="insert-mark"
+              :x1="drag.action.after ? keyById.get(drag.action.target)!.key.size.w : 0"
+              :x2="drag.action.after ? keyById.get(drag.action.target)!.key.size.w : 0"
+              y1="-0.1"
+              :y2="keyById.get(drag.action.target)!.key.size.h + 0.1"
+            />
+          </g>
+          <g v-if="drag" class="drag-ghost" :transform="`translate(${drag.point.x} ${drag.point.y})`">
+            <circle r=".28" />
+            <text y=".1">{{ numbers.get(drag.id) ?? "+" }}</text>
+          </g>
+          <rect
+            v-if="band"
+            class="range-box"
+            :x="Math.min(band.start.x, band.end.x)"
+            :y="Math.min(band.start.y, band.end.y)"
+            :width="Math.abs(band.end.x - band.start.x)"
+            :height="Math.abs(band.end.y - band.start.y)"
+          />
+        </g>
+      </svg>
+    </section>
+    <aside class="side pane">
+      <IdxPresets
+        :settings="settings"
+        :selected-count="selected.length"
+        :matrix-available="!!positions"
+        :previewing="!!preview"
+        :shift-hint="shiftHint"
+        @update="settings = $event"
+        @preview="startPreview"
+        @apply="applyPreview"
+        @cancel="preview = null"
+      />
+      <IdxImport :message="importMessage" @apply="importPlacements" @error="emit('error', $event)" />
+      <section class="register">
+        <h3>未登録のキー</h3>
+        <p class="hint">
+          PHYに足したキーは、ここで末尾に登録するか、キャンバスでドラッグして位置を決めます。
+        </p>
+        <button data-testid="idx-register-all" :disabled="!allUnregistered.size" @click="registerAll">
+          未登録をすべて末尾に登録({{ allUnregistered.size }})
+        </button>
+      </section>
+      <section v-if="info" class="info" data-testid="idx-info">
+        <h3>選択中のキー</h3>
+        <dl>
+          <dt>ラベル</dt>
+          <dd>{{ info.label }}</dd>
+          <dt>出力番号</dt>
+          <dd>{{ info.number ?? "未登録" }}</dd>
+          <dt>保存順</dt>
+          <dd>{{ info.saved < 0 ? "未登録" : info.saved }}</dd>
+          <dt>所属</dt>
+          <dd>{{ info.path }}</dd>
+          <dt>ID</dt>
+          <dd class="id">{{ info.id }}</dd>
+        </dl>
+        <p v-if="selected.length > 1" class="hint">ほか {{ selected.length - 1 }} 件を選択中</p>
+      </section>
+    </aside>
+  </section>
+</template>
+
+<style scoped>
+.workspace {
+  min-height: 0;
+  display: grid;
+  grid-template-columns: 220px minmax(300px, 1fr) 270px;
+  gap: 8px;
+}
+.pane {
+  padding: 10px;
+  min-height: 0;
+  overflow: auto;
+  background: #fff;
+  border: 1px solid #cbd1da;
+  border-radius: 6px;
+}
+h2 {
+  font-size: 15px;
+  margin: 0 0 6px;
+}
+h3 {
+  font-size: 14px;
+  margin: 0 0 6px;
+}
+.hint {
+  font-size: 12px;
+  color: #667;
+  margin: 4px 0;
+}
+.canvas-pane {
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+.canvas-toolbar {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  padding-bottom: 6px;
+}
+.status {
+  font-size: 12px;
+  color: #445;
+}
+.canvas {
+  width: 100%;
+  flex: 1;
+  min-height: 0;
+  background: #fbfcfe;
+  touch-action: none;
+  user-select: none;
+}
+.canvas.panning {
+  cursor: grab;
+}
+.key {
+  cursor: grab;
+}
+.previewing .key {
+  cursor: pointer;
+}
+.face {
+  fill: #f4f6f9;
+  stroke: #8d97a5;
+  stroke-width: 0.03;
+}
+.chosen .face {
+  fill: #dce9ff;
+  stroke: #1769d2;
+  stroke-width: 0.06;
+}
+.unregistered .face {
+  fill: #fff1d6;
+  stroke: #c07a12;
+  stroke-dasharray: 0.08 0.06;
+}
+.ghost .face {
+  fill-opacity: 0.5;
+}
+.dragging {
+  opacity: 0.45;
+}
+.cross .face {
+  stroke: #9b30d9;
+  stroke-width: 0.08;
+}
+.label {
+  font-size: 0.16px;
+  fill: #667;
+  pointer-events: none;
+}
+.number {
+  font-size: 0.34px;
+  font-weight: 600;
+  text-anchor: middle;
+  fill: #20242b;
+  pointer-events: none;
+}
+.unregistered .number {
+  font-size: 0.18px;
+  fill: #9a4c00;
+}
+.scan-line {
+  fill: none;
+  stroke-width: 3px;
+  stroke-opacity: 0.7;
+  vector-effect: non-scaling-stroke;
+  pointer-events: none;
+}
+.boundary {
+  stroke: #9a4c00;
+  stroke-width: 2px;
+  stroke-dasharray: 6 4;
+  vector-effect: non-scaling-stroke;
+  pointer-events: none;
+}
+.drop-mark {
+  pointer-events: none;
+}
+.insert-mark {
+  stroke: #d2142b;
+  stroke-width: 4px;
+  vector-effect: non-scaling-stroke;
+}
+.swap-mark {
+  fill: #d2142b22;
+  stroke: #d2142b;
+  stroke-width: 3px;
+  stroke-dasharray: 6 3;
+  vector-effect: non-scaling-stroke;
+}
+.drag-ghost {
+  pointer-events: none;
+}
+.drag-ghost circle {
+  fill: #1769d2;
+}
+.drag-ghost text {
+  font-size: 0.26px;
+  fill: #fff;
+  text-anchor: middle;
+}
+.range-box {
+  fill: #4b8de822;
+  stroke: #1769d2;
+  stroke-width: 1px;
+  vector-effect: non-scaling-stroke;
+  pointer-events: none;
+}
+.register {
+  margin: 0 0 14px;
+}
+.info dl {
+  display: grid;
+  grid-template-columns: auto 1fr;
+  gap: 3px 10px;
+  margin: 0;
+  font-size: 13px;
+}
+.info dt {
+  color: #667;
+}
+.info dd {
+  margin: 0;
+}
+.info .id {
+  font-family: ui-monospace, monospace;
+  font-size: 11px;
+  word-break: break-all;
+}
+</style>

mock/src/ui/idx/IdxImport.vue

@@ -0,0 +1,91 @@
+<script setup lang="ts">
+// 既存の定義(QMK keyboard.json / VIA定義 / KLE JSON)からの取り込み。照合は親が表示中のキーで行う。T-31。
+import { ref } from "vue";
+import type { Placement } from "../../domain/idxImport";
+import { readLayoutPlacements } from "../../io/layoutImport";
+defineProps<{ message: string }>();
+const emit = defineEmits<{ apply: [placements: Placement[], source: string]; error: [text: string] }>();
+const input = ref<HTMLInputElement>();
+const pending = ref<{ name: string; data: unknown; layouts: string[] } | null>(null);
+const layout = ref("");
+async function read(file: File) {
+  try {
+    const data = JSON.parse(await file.text()) as unknown;
+    const result = readLayoutPlacements(data);
+    if (result.layouts && !result.layout) {
+      pending.value = { name: file.name, data, layouts: result.layouts };
+      layout.value = result.layouts[0]!;
+      return;
+    }
+    pending.value = null;
+    emit("apply", result.placements, result.layout ? `${file.name} / ${result.layout}` : file.name);
+  } catch (e) {
+    emit("error", String(e));
+  }
+}
+function applyLayout() {
+  if (!pending.value) return;
+  const { placements } = readLayoutPlacements(pending.value.data, layout.value);
+  emit("apply", placements, `${pending.value.name} / ${layout.value}`);
+  pending.value = null;
+}
+</script>
+<template>
+  <section class="import">
+    <h3>既存の定義から取り込む</h3>
+    <p class="hint">
+      QMK keyboard.json・VIA定義・KLE JSON のキー順を、位置が一致する表示中のキーに写します。
+    </p>
+    <button @click="input?.click()">ファイルを選ぶ…</button>
+    <input
+      ref="input"
+      hidden
+      type="file"
+      accept=".json,application/json"
+      data-testid="idx-import-file"
+      @change="
+        (e) => {
+          const f = (e.target as HTMLInputElement).files?.[0];
+          if (f) void read(f);
+          (e.target as HTMLInputElement).value = '';
+        }
+      "
+    />
+    <div v-if="pending" class="layouts">
+      <label
+        >レイアウト
+        <select v-model="layout" aria-label="取り込むレイアウト">
+          <option v-for="name in pending.layouts" :key="name" :value="name">{{ name }}</option>
+        </select>
+      </label>
+      <button @click="applyLayout">取り込む</button>
+      <button @click="pending = null">やめる</button>
+    </div>
+    <p v-if="message" class="result" data-testid="idx-import-result">{{ message }}</p>
+  </section>
+</template>
+<style scoped>
+.import {
+  margin: 0 0 14px;
+}
+h3 {
+  font-size: 14px;
+  margin: 0 0 6px;
+}
+.hint,
+.result {
+  font-size: 12px;
+  color: #667;
+  margin: 4px 0;
+}
+.result {
+  color: #20242b;
+}
+.layouts {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  align-items: center;
+  margin-top: 6px;
+}
+</style>

mock/src/ui/idx/IdxPresets.vue

@@ -0,0 +1,149 @@
+<script setup lang="ts">
+// プリセット(対象・走査・向き)の指定と、プレビュー・適用のボタン。T-31。
+import type { PresetSettings } from "./presets";
+const props = defineProps<{
+  settings: PresetSettings;
+  selectedCount: number;
+  matrixAvailable: boolean;
+  previewing: boolean;
+  shiftHint: string;
+}>();
+const emit = defineEmits<{
+  update: [settings: PresetSettings];
+  preview: [];
+  apply: [];
+  cancel: [];
+}>();
+const scans = [
+  ["rows", "行優先"],
+  ["columns", "列優先"],
+  ["halves", "半身ごと(左手側が先)"],
+  ["alternating", "行ごとに左右交互"],
+  ["matrix", "マトリクス順(row → col)"],
+] as const;
+function set<K extends keyof PresetSettings>(key: K, value: PresetSettings[K]) {
+  emit("update", { ...props.settings, [key]: value });
+}
+</script>
+<template>
+  <fieldset class="presets">
+    <legend>一括の並べ替え</legend>
+    <div class="row" role="radiogroup" aria-label="対象">
+      <label
+        ><input
+          type="radio"
+          name="idx-target"
+          :checked="settings.target === 'all'"
+          @change="set('target', 'all')"
+        />全体</label
+      >
+      <label
+        ><input
+          type="radio"
+          name="idx-target"
+          :checked="settings.target === 'selection'"
+          :disabled="!selectedCount"
+          @change="set('target', 'selection')"
+        />選択範囲({{ selectedCount }})</label
+      >
+    </div>
+    <label class="field"
+      >走査
+      <select
+        aria-label="走査"
+        :value="settings.kind"
+        @change="set('kind', ($event.target as HTMLSelectElement).value as PresetSettings['kind'])"
+      >
+        <option
+          v-for="[value, label] in scans"
+          :key="value"
+          :value="value"
+          :disabled="value === 'matrix' && !matrixAvailable"
+        >
+          {{ label }}
+        </option>
+      </select>
+    </label>
+    <p v-if="!matrixAvailable" class="hint">マトリクス順には、出力設定の rowPins / colPins が必要です。</p>
+    <label v-if="settings.kind === 'rows' || settings.kind === 'columns'" class="field"
+      >向き
+      <select
+        aria-label="向き"
+        :value="settings.direction"
+        @change="set('direction', ($event.target as HTMLSelectElement).value as PresetSettings['direction'])"
+      >
+        <option value="normal">通常</option>
+        <option value="reversed">左右逆</option>
+      </select>
+    </label>
+    <template v-else-if="settings.kind !== 'matrix'">
+      <label class="field"
+        >左手側
+        <select
+          aria-label="左手側の向き"
+          :value="settings.left"
+          @change="set('left', ($event.target as HTMLSelectElement).value as PresetSettings['left'])"
+        >
+          <option value="normal">通常</option>
+          <option value="reversed">左右逆</option>
+        </select>
+      </label>
+      <label class="field"
+        >右手側
+        <select
+          aria-label="右手側の向き"
+          :value="settings.right"
+          @change="set('right', ($event.target as HTMLSelectElement).value as PresetSettings['right'])"
+        >
+          <option value="normal">通常</option>
+          <option value="reversed">左右逆</option>
+        </select>
+      </label>
+    </template>
+    <div class="row">
+      <button v-if="!previewing" @click="emit('preview')">プレビュー</button>
+      <template v-else>
+        <button class="primary" @click="emit('apply')">適用</button>
+        <button @click="emit('cancel')">取り消し</button>
+      </template>
+    </div>
+    <p v-if="previewing && shiftHint" class="hint">{{ shiftHint }}</p>
+  </fieldset>
+</template>
+<style scoped>
+.presets {
+  border: 0;
+  padding: 0;
+  margin: 0 0 14px;
+  min-width: 0;
+}
+legend {
+  font-weight: 600;
+  padding: 0;
+  margin-bottom: 6px;
+}
+.row {
+  display: flex;
+  gap: 8px;
+  flex-wrap: wrap;
+  margin: 6px 0;
+}
+.field {
+  display: flex;
+  gap: 6px;
+  align-items: center;
+  justify-content: space-between;
+  margin: 6px 0;
+}
+.field select {
+  max-width: 160px;
+}
+.hint {
+  font-size: 12px;
+  color: #667;
+  margin: 4px 0;
+}
+.primary {
+  background: #dce9ff;
+}
+</style>

mock/src/ui/idx/IdxTree.vue

@@ -0,0 +1,91 @@
+<script setup lang="ts">
+// VariantGroupとバリアントのツリー。クラスターは出さず、その中のグループだけを拾う。T-31。
+import { computed } from "vue";
+import type { Node, VariantGroupNode } from "../../domain/phy";
+defineOptions({ name: "IdxTree" });
+const props = defineProps<{
+  nodes: Node[];
+  variants: Record<string, string>;
+  unregistered: ReadonlySet<string>;
+}>();
+const emit = defineEmits<{ select: [groupId: string, variantId: string] }>();
+function groupsIn(nodes: Node[]): VariantGroupNode[] {
+  return nodes.flatMap((n) =>
+    n.type === "cluster" ? groupsIn(n.children) : n.type === "variantGroup" ? [n] : [],
+  );
+}
+function keysIn(nodes: Node[]): string[] {
+  return nodes.flatMap((n) =>
+    n.type === "key"
+      ? n.decal
+        ? []
+        : [n.id]
+      : n.type === "cluster"
+        ? keysIn(n.children)
+        : n.type === "variantGroup"
+          ? n.children.flatMap((v) => keysIn(v.children))
+          : [],
+  );
+}
+const groups = computed(() => groupsIn(props.nodes));
+const chosen = (g: VariantGroupNode) => props.variants[g.id] ?? g.default;
+</script>
+<template>
+  <ul v-if="groups.length" class="tree-list">
+    <li v-for="g in groups" :key="g.id">
+      <div class="tree-group" :data-tree-id="g.id">{{ g.name }}</div>
+      <ul class="tree-list">
+        <li v-for="v in g.children" :key="v.id">
+          <button
+            class="tree-node"
+            :data-tree-id="v.id"
+            :class="{ chosen: chosen(g) === v.id }"
+            :aria-pressed="chosen(g) === v.id"
+            @click="emit('select', g.id, v.id)"
+          >
+            {{ v.name }}
+            <small
+              >{{ g.default === v.id ? "既定 · " : "" }}{{ keysIn(v.children).length }}件<template
+                v-if="keysIn(v.children).some((id) => unregistered.has(id))"
+              >
+                · 未登録 {{ keysIn(v.children).filter((id) => unregistered.has(id)).length }}</template
+              ></small
+            >
+          </button>
+          <IdxTree
+            :nodes="v.children"
+            :variants="variants"
+            :unregistered="unregistered"
+            @select="(group, variant) => emit('select', group, variant)"
+          />
+        </li>
+      </ul>
+    </li>
+  </ul>
+</template>
+<style scoped>
+.tree-list {
+  list-style: none;
+  padding-left: 12px;
+  margin: 3px 0;
+}
+.tree-group {
+  padding: 4px;
+  font-weight: 600;
+  white-space: nowrap;
+}
+.tree-node {
+  width: 100%;
+  text-align: left;
+  border: 0;
+  background: transparent;
+  padding: 4px;
+  white-space: nowrap;
+}
+.tree-node small {
+  color: #667;
+}
+.chosen {
+  background: #dce9ff;
+}
+</style>

mock/src/ui/idx/logic.ts

@@ -0,0 +1,67 @@
+import type { FlatKey } from "../../domain/phy";
+import { insertNextTo, swapKeys, type OrderContext } from "../../domain/idxOrder";
+
+type Point = { x: number; y: number };
+export type DropAction =
+  { kind: "insert"; target: string; after: boolean } | { kind: "swap"; target: string };
+
+/** World point in the key's own frame (origin at its top-left, x along its width). */
+export function toKeyLocal(k: FlatKey, p: Point): Point {
+  const a = (-k.rotation * Math.PI) / 180,
+    dx = p.x - k.x,
+    dy = p.y - k.y;
+  return { x: dx * Math.cos(a) - dy * Math.sin(a), y: dx * Math.sin(a) + dy * Math.cos(a) };
+}
+
+/** World center of a key. */
+export function keyCenter(k: FlatKey): Point {
+  const a = (k.rotation * Math.PI) / 180,
+    hw = k.key.size.w / 2,
+    hh = k.key.size.h / 2;
+  return { x: k.x + hw * Math.cos(a) - hh * Math.sin(a), y: k.y + hw * Math.sin(a) + hh * Math.cos(a) };
+}
+
+/** Topmost key under a world point, with the point's position across the key width (0..1). */
+export function hitKey(keys: readonly FlatKey[], p: Point): { id: string; fraction: number } | undefined {
+  for (let i = keys.length - 1; i >= 0; i--) {
+    const k = keys[i]!,
+      local = toKeyLocal(k, p);
+    if (local.x >= 0 && local.y >= 0 && local.x <= k.key.size.w && local.y <= k.key.size.h)
+      return { id: k.key.id, fraction: local.x / k.key.size.w };
+  }
+  return undefined;
+}
+
+/**
+ * Drop result of `source` at a hit: the outer quarters insert before or after the key, the middle
+ * swaps. Unregistered keys cannot swap, so their drop splits the key in halves. Unregistered targets
+ * and the source itself take no drop. T-31.
+ */
+export function dropAction(
+  source: string,
+  hit: { id: string; fraction: number } | undefined,
+  registered: ReadonlySet<string>,
+): DropAction | undefined {
+  if (!hit || hit.id === source || !registered.has(hit.id)) return undefined;
+  if (!registered.has(source)) return { kind: "insert", target: hit.id, after: hit.fraction >= 0.5 };
+  if (hit.fraction < 0.25) return { kind: "insert", target: hit.id, after: false };
+  if (hit.fraction > 0.75) return { kind: "insert", target: hit.id, after: true };
+  return { kind: "swap", target: hit.id };
+}
+
+/** New order after dropping `source`. */
+export function applyDrop(
+  order: readonly string[],
+  ctx: OrderContext,
+  source: string,
+  action: DropAction,
+): string[] {
+  return action.kind === "swap"
+    ? swapKeys(order, source, action.target)
+    : insertNextTo(order, ctx, source, action.target, action.after);
+}
+
+/** Output number of each shown key: its position after dropping keys outside the configuration. */
+export function outputNumbers(order: readonly string[], visible: ReadonlySet<string>): Map<string, number> {
+  return new Map(order.filter((id) => visible.has(id)).map((id, i) => [id, i]));
+}

mock/src/ui/idx/presets.ts

@@ -0,0 +1,21 @@
+import type { Direction, ScanKind } from "../../domain/idxScan";
+
+/** Preset choices in the side pane. `matrix` sorts by ELC row → col instead of scanning. T-31. */
+export type PresetSettings = {
+  target: "all" | "selection";
+  kind: ScanKind | "matrix";
+  direction: Direction;
+  left: Direction;
+  right: Direction;
+};
+
+export const defaultPresetSettings = (): PresetSettings => ({
+  target: "all",
+  kind: "rows",
+  direction: "normal",
+  left: "normal",
+  right: "normal",
+});
+
+/** Line colors of the preview, cycled by line index. */
+export const lineColors = ["#1769d2", "#d2691e", "#2e8b57", "#9b30d9", "#c0392b", "#00838f"];

mock/src/ui/idx/useIdxPointer.ts

@@ -0,0 +1,108 @@
+import { ref, type Ref } from "vue";
+import type { FlatKey } from "../../domain/phy";
+import { dropAction, hitKey, keyCenter, type DropAction } from "./logic";
+
+type Point = { x: number; y: number };
+type Options = {
+  svg: Ref<SVGSVGElement | undefined>;
+  zoom: Ref<number>;
+  pan: Ref<Point>;
+  selected: Ref<string[]>;
+  keys: () => FlatKey[];
+  registered: () => ReadonlySet<string>;
+  previewing: () => boolean;
+  onDrop: (source: string, action: DropAction) => void;
+  onPreviewPick: (id: string) => void;
+};
+/** Pointer travel (px) before a press on a key becomes a drag. */
+const DRAG_START = 4;
+
+/** Canvas pointer handling: click/Shift+click selection, dragging a key to reorder, range selection, pan. T-31. */
+export function useIdxPointer(o: Options) {
+  const drag = ref<{ id: string; point: Point; action?: DropAction } | null>(null);
+  const band = ref<{ start: Point; end: Point } | null>(null);
+  const spaceHeld = ref(false);
+  let press: { id?: string; client: Point; add: boolean; moved: boolean; pan?: Point } | null = null;
+
+  function world(event: PointerEvent): Point {
+    const svg = o.svg.value!;
+    const local = new DOMPoint(event.clientX, event.clientY).matrixTransform(svg.getScreenCTM()!.inverse());
+    return { x: (local.x - o.pan.value.x) / o.zoom.value, y: (local.y - o.pan.value.y) / o.zoom.value };
+  }
+
+  function begin(event: PointerEvent, id?: string) {
+    const add = event.shiftKey || event.ctrlKey || event.metaKey;
+    const panning = event.button === 1 || spaceHeld.value;
+    if (event.button !== 0 && !panning) return;
+    event.preventDefault();
+    if (!panning && id && o.previewing()) {
+      o.onPreviewPick(id);
+      return;
+    }
+    o.svg.value?.setPointerCapture?.(event.pointerId);
+    press = {
+      id: panning ? undefined : id,
+      client: { x: event.clientX, y: event.clientY },
+      add,
+      moved: false,
+    };
+    if (panning) press.pan = { ...o.pan.value };
+    else if (!id && !o.previewing()) band.value = { start: world(event), end: world(event) };
+  }
+
+  function move(event: PointerEvent) {
+    if (!press) return;
+    const dx = event.clientX - press.client.x,
+      dy = event.clientY - press.client.y;
+    if (!press.moved && Math.hypot(dx, dy) < DRAG_START) return;
+    press.moved = true;
+    if (press.pan) {
+      // viewBox matches the SVG's pixel size, so client deltas are viewBox deltas
+      o.pan.value = { x: press.pan.x + dx, y: press.pan.y + dy };
+      return;
+    }
+    const point = world(event);
+    if (press.id) {
+      const action = dropAction(press.id, hitKey(o.keys(), point), o.registered());
+      drag.value = { id: press.id, point, action };
+    } else if (band.value) band.value = { ...band.value, end: point };
+  }
+
+  function end() {
+    if (!press) return;
+    const { id, add, moved } = press;
+    if (id && !moved) {
+      o.selected.value = add
+        ? o.selected.value.includes(id)
+          ? o.selected.value.filter((x) => x !== id)
+          : [...o.selected.value, id]
+        : [id];
+    } else if (id && drag.value?.action) o.onDrop(id, drag.value.action);
+    else if (!id && !press.pan) {
+      const b = band.value;
+      if (!moved || !b) {
+        if (!add) o.selected.value = [];
+      } else {
+        const [x0, x1] = [Math.min(b.start.x, b.end.x), Math.max(b.start.x, b.end.x)];
+        const [y0, y1] = [Math.min(b.start.y, b.end.y), Math.max(b.start.y, b.end.y)];
+        const inside = o
+          .keys()
+          .filter((k) => {
+            const c = keyCenter(k);
+            return c.x >= x0 && c.x <= x1 && c.y >= y0 && c.y <= y1;
+          })
+          .map((k) => k.key.id);
+        o.selected.value = add ? [...new Set([...o.selected.value, ...inside])] : inside;
+      }
+    }
+    cancel();
+  }
+
+  function cancel() {
+    press = null;
+    drag.value = null;
+    band.value = null;
+  }
+
+  return { drag, band, spaceHeld, begin, move, end, cancel };
+}

mock/src/ui/panels/ElcPanel.vue

@@ -0,0 +1,564 @@
+<script setup lang="ts">
+import { computed, ref, watch } from "vue";
+import { flattenKeys } from "../../domain/geometry";
+import {
+  mcuPinCandidates,
+  removeKeyWiring,
+  setKeyWiring,
+  setProvider,
+  removeProvider,
+  createLedChain,
+  setLedOrder,
+} from "../../domain/elc";
+import type { ContactWiring, McuProvider, AnalogMuxProvider, PinRef } from "../../domain/elc";
+import { defaultVariantSelection, type ProjectFile } from "../../domain/project";
+import type { Node } from "../../domain/phy";
+import { validateProject } from "../../domain/validate";
+import { wireMatrixKeys } from "../../domain/elcMatrix";
+import type { Dispatch } from "../types";
+import KeyboardView from "../common/KeyboardView.vue";
+
+const props = defineProps<{ project: ProjectFile; dispatch: Dispatch }>();
+const variants = computed(() => ({
+  ...defaultVariantSelection(props.project.phy),
+  ...props.project.output.variantSelection,
+}));
+const keys = computed(() =>
+  flattenKeys(props.project.phy, variants.value)
+    .filter((x) => !x.key.decal)
+    .map((x) => x.key),
+);
+const selectedKeyId = ref("");
+const selectedKey = computed(() => keys.value.find((x) => x.id === selectedKeyId.value));
+const wired = computed(() => new Map(props.project.elc.keys.map((x) => [x.key, x])));
+const collisionIds = computed(
+  () =>
+    new Set(
+      validateProject(props.project)
+        .filter((x) => x.code === "wiring-collision")
+        .flatMap((x) => x.ids ?? []),
+    ),
+);
+const unwired = computed(() => keys.value.filter((k) => !wired.value.has(k.id)).map((k) => k.id));
+const wiring = ref({ a: "", b: "", diode: "" as "" | "a-to-b" | "b-to-a" });
+watch(selectedKeyId, (id) => {
+  const current = props.project.elc.keys.find((x) => x.key === id);
+  wiring.value =
+    current?.detect === "contact"
+      ? { a: current.terminals.a, b: current.terminals.b, diode: current.diode ?? "" }
+      : { a: "", b: "", diode: "" };
+});
+const providerId = ref("MCU"),
+  providerPart = ref("RP2040"),
+  providerError = ref("");
+const providerCandidates = computed(() => {
+  const p = { id: providerId.value, kind: "mcu" as const, part: providerPart.value };
+  return mcuPinCandidates(p).map((name) => `${p.id}.${name}`);
+});
+const pinRefs = computed(() => [
+  "VCC",
+  "GND",
+  ...props.project.elc.providers.flatMap((p) =>
+    p.kind === "mcu"
+      ? mcuPinCandidates(p).map((pin) => `${p.id}.${pin}`)
+      : Array.from({ length: p.channels }, (_, i) => `${p.id}.${i}`),
+  ),
+]);
+const providerRows = computed(() => props.project.elc.providers);
+const mux = ref({ id: "MUX", channels: 8, select: "", common: "", enable: "" });
+const chainId = ref("LED"),
+  chainData = ref(""),
+  selectedChainId = ref("");
+const batchKeyIds = ref<string[]>([]),
+  batchRows = ref<string[]>([]),
+  batchCols = ref<string[]>([]);
+const batchRow = ref(""),
+  batchCol = ref(""),
+  batchDiode = ref<"" | "a-to-b" | "b-to-a">("a-to-b");
+const batchPreviewOpen = ref(false),
+  batchError = ref("");
+const chains = computed(() => props.project.elc.ledChains ?? []);
+const nodes = computed(() => {
+  const result: Array<{ id: string; label: string }> = [];
+  const visit = (ns: Node[]) =>
+    ns.forEach((n) => {
+      if (n.type === "key" && n.perKeyLED) result.push({ id: n.id, label: `${n.id} · per-key LED` });
+      else if (n.type === "component" && n.partGroup === "@led")
+        result.push({ id: n.id, label: `${n.id} · @led` });
+      else if (n.type === "cluster") visit(n.children);
+      else if (n.type === "variantGroup") n.children.forEach((v) => visit(v.children));
+    });
+  visit(props.project.phy.root);
+  return result;
+});
+const chain = computed(() => chains.value.find((x) => x.id === selectedChainId.value));
+const chainSelection = ref<string[]>([]);
+watch(selectedChainId, () => {
+  chainSelection.value = [];
+});
+function clickKey(id: string) {
+  selectedKeyId.value = id;
+  if (chain.value && nodes.value.some((n) => n.id === id) && !chain.value.order.includes(id))
+    setOrder([...chain.value.order, id]);
+}
+function keyClass(id: string) {
+  return collisionIds.value.has(id) ? "error" : !wired.value.has(id) ? "warn" : "ok";
+}
+function commitWiring() {
+  if (!selectedKeyId.value || !wiring.value.a || !wiring.value.b) return;
+  const next: ContactWiring = {
+    key: selectedKeyId.value,
+    detect: "contact",
+    terminals: { a: wiring.value.a, b: wiring.value.b },
+    ...(wiring.value.diode ? { diode: wiring.value.diode } : {}),
+  };
+  props.dispatch("接点配線", (p) => ({ ...p, elc: setKeyWiring(p.elc, next) }));
+}
+function removeWiring() {
+  if (selectedKeyId.value)
+    props.dispatch("配線解除", (p) => ({ ...p, elc: removeKeyWiring(p.elc, selectedKeyId.value) }));
+}
+function addMcu() {
+  providerError.value = "";
+  if (!providerId.value || providerId.value.includes(".")) {
+    providerError.value = "IDは空欄にできず、'.'を含められません";
+    return;
+  }
+  const p: McuProvider = { id: providerId.value, kind: "mcu", part: providerPart.value };
+  props.dispatch("MCU追加・編集", (project) => ({ ...project, elc: setProvider(project.elc, p) }));
+}
+function editProvider(id: string) {
+  const p = props.project.elc.providers.find((x) => x.id === id);
+  if (p?.kind === "mcu") {
+    providerId.value = p.id;
+    providerPart.value = p.part;
+  }
+}
+function addMux() {
+  if (!mux.value.id || mux.value.id.includes(".")) {
+    providerError.value = "IDは空欄にできず、'.'を含められません";
+    return;
+  }
+  const p: AnalogMuxProvider = {
+    id: mux.value.id,
+    kind: "analog-mux",
+    channels: Number(mux.value.channels),
+    select: mux.value.select
+      .split(",")
+      .map((x) => x.trim())
+      .filter(Boolean),
+    common: mux.value.common,
+    ...(mux.value.enable ? { enable: mux.value.enable } : {}),
+  };
+  props.dispatch("analog-mux追加・編集", (project) => ({ ...project, elc: setProvider(project.elc, p) }));
+}
+function removeProviderUi(id: string) {
+  props.dispatch("提供者削除", (p) => ({ ...p, elc: removeProvider(p.elc, id) }));
+}
+function makeChain() {
+  if (!chainId.value || !chainData.value) return;
+  try {
+    props.dispatch("LEDチェーン作成", (p) => ({
+      ...p,
+      elc: createLedChain(p.elc, chainId.value, chainData.value),
+    }));
+    selectedChainId.value = chainId.value;
+  } catch (e) {
+    providerError.value = String(e);
+  }
+}
+function setOrder(order: string[]) {
+  if (chain.value)
+    props.dispatch("LED順序", (p) => ({ ...p, elc: setLedOrder(p.elc, chain.value!.id, order) }));
+}
+function moveLed(index: number, direction: number) {
+  const order = [...(chain.value?.order ?? [])];
+  const to = index + direction;
+  if (to < 0 || to >= order.length) return;
+  [order[index], order[to]] = [order[to]!, order[index]!];
+  setOrder(order);
+}
+function removeLed(index: number) {
+  const order = [...(chain.value?.order ?? [])];
+  order.splice(index, 1);
+  setOrder(order);
+}
+function toggleBatchKey(id: string) {
+  batchKeyIds.value = batchKeyIds.value.includes(id)
+    ? batchKeyIds.value.filter((x) => x !== id)
+    : [...batchKeyIds.value, id];
+}
+function moveBatchPin(kind: "row" | "col", index: number, delta: number) {
+  const list = kind === "row" ? batchRows.value : batchCols.value;
+  const nextIndex = index + delta;
+  if (nextIndex < 0 || nextIndex >= list.length) return;
+  [list[index], list[nextIndex]] = [list[nextIndex]!, list[index]!];
+}
+function batchWire() {
+  if (!batchKeyIds.value.length || !batchRows.value.length || !batchCols.value.length) return;
+  // Matrix assignment follows the visible PHY key order, regardless of click order.
+  const orderedKeys = keys.value.map((k) => k.id).filter((id) => batchKeyIds.value.includes(id));
+  try {
+    props.dispatch("一括配線", (p) => ({
+      ...p,
+      elc: wireMatrixKeys(
+        p.elc,
+        orderedKeys,
+        batchRows.value,
+        batchCols.value,
+        batchDiode.value || undefined,
+      ),
+    }));
+    batchError.value = "";
+    batchPreviewOpen.value = false;
+  } catch (e) {
+    batchError.value = e instanceof Error ? e.message : String(e);
+  }
+}
+const batchOrderedKeys = computed(() =>
+  keys.value.map((k) => k.id).filter((id) => batchKeyIds.value.includes(id)),
+);
+const batchCapacityError = computed(
+  () => batchOrderedKeys.value.length > batchRows.value.length * batchCols.value.length,
+);
+const batchPreview = computed(() =>
+  batchOrderedKeys.value.map((key, i) => ({
+    key,
+    row: batchRows.value[Math.floor(i / batchCols.value.length)],
+    col: batchCols.value[i % batchCols.value.length],
+    overwrite: wired.value.has(key),
+  })),
+);
+const ledCandidate = ref("");
+function addLedCandidate() {
+  if (
+    chain.value &&
+    nodes.value.some((n) => n.id === ledCandidate.value) &&
+    !chain.value.order.includes(ledCandidate.value)
+  )
+    setOrder([...chain.value.order, ledCandidate.value]);
+}
+</script>
+
+<template>
+  <section class="elc-panel">
+    <h2>Wiring Editor</h2>
+    <div class="elc-grid">
+      <section class="box">
+        <h3>ピン提供者</h3>
+        <ul>
+          <li v-for="p in providerRows" :key="p.id">
+            <button @click="editProvider(p.id)">
+              {{ p.id }} · {{ p.kind }} · {{ p.kind === "mcu" ? p.part : `${p.channels} channels` }}
+            </button>
+            <button @click="removeProviderUi(p.id)">削除</button>
+            <div v-if="p.kind === 'analog-mux'">
+              select {{ p.select.join(", ") }} / common {{ p.common
+              }}<span v-if="p.enable"> / enable {{ p.enable }}</span> (データ保持のみ)
+            </div>
+          </li>
+        </ul>
+        <label>ID <input v-model="providerId" data-testid="provider-id" /></label
+        ><label
+          >MCU品番 <input v-model="providerPart" list="mcu-parts" /><datalist id="mcu-parts">
+            <option>RP2040</option>
+          </datalist></label
+        ><button @click="addMcu">MCUを追加・更新</button>
+        <p v-if="providerCandidates.length">候補: {{ providerCandidates.join(", ") }}</p>
+        <p v-else>未知の品番はピン名を自由入力します。</p>
+        <hr />
+        <h4>analog-mux (保持のみ)</h4>
+        <label>ID <input v-model="mux.id" /></label
+        ><label>channels <input type="number" min="1" v-model.number="mux.channels" /></label
+        ><label>select (カンマ区切り) <input v-model="mux.select" /></label
+        ><label>common <input v-model="mux.common" /></label
+        ><label>enable <input v-model="mux.enable" /></label
+        ><button @click="addMux">analog-muxを追加・更新</button>
+        <p v-if="providerError" class="error-text">{{ providerError }}</p>
+      </section>
+      <section class="box wiring-box">
+        <h3>選択構成のキー配線</h3>
+        <p>
+          未配線: <b data-testid="unwired-count">{{ unwired.length }}</b> / {{ keys.length }}
+        </p>
+        <KeyboardView
+          :phy="project.phy"
+          :selection="variants"
+          :selected-ids="selectedKeyId ? [selectedKeyId] : []"
+          :key-class="keyClass"
+          :key-text="
+            (id) => {
+              const w = wired.get(id);
+              return w?.detect === 'contact'
+                ? `${w.terminals.a.split('.').at(-1)}/${w.terminals.b.split('.').at(-1)}`
+                : w
+                  ? 'analog'
+                  : id.slice(-3);
+            }
+          "
+          @key-click="(id) => clickKey(id)"
+        />
+        <p>
+          色: <span class="warn-text">黄 未配線</span> · <span class="error-text">赤 衝突</span> · 緑 配線済み
+        </p>
+        <div v-if="selectedKey" class="edit-form">
+          <h4>{{ selectedKey.id }} · 接点端子</h4>
+          <label
+            >a
+            <select v-model="wiring.a">
+              <option value="">選択…</option>
+              <option v-for="pin in pinRefs" :key="`a${pin}`" :value="pin">{{ pin }}</option></select
+            ><input v-model="wiring.a" aria-label="a端子自由入力" placeholder="自由入力: provider.pin"
+          /></label>
+          <label
+            >b
+            <select v-model="wiring.b">
+              <option value="">選択…</option>
+              <option v-for="pin in pinRefs" :key="`b${pin}`" :value="pin">{{ pin }}</option></select
+            ><input v-model="wiring.b" aria-label="b端子自由入力" placeholder="自由入力: provider.pin"
+          /></label>
+          <label
+            >ダイオード
+            <select v-model="wiring.diode">
+              <option value="">なし</option>
+              <option value="a-to-b">a-to-b</option>
+              <option value="b-to-a">b-to-a</option>
+            </select></label
+          ><button @click="commitWiring">配線を保存</button><button @click="removeWiring">配線解除</button>
+        </div>
+        <p v-else>キーをクリックして端子を編集します。</p>
+        <h4>未配線・衝突</h4>
+        <p>未配線 ({{ unwired.length }}): {{ unwired.join(", ") || "なし" }}</p>
+        <ul>
+          <li
+            v-for="issue in validateProject(project).filter((x) => x.code === 'wiring-collision')"
+            :key="issue.ids?.join('-')"
+          >
+            {{ issue.code }}: {{ issue.ids?.join(" ↔ ") }}
+          </li>
+        </ul>
+        <hr />
+        <h4>一括配線</h4>
+        <p>
+          キーを選び、row/colピンの順序を指定して配線します。選択キーにはPHY表示順でrowを進め、各row内でcolを進めます。
+        </p>
+        <KeyboardView
+          :phy="project.phy"
+          :selection="variants"
+          :selected-ids="batchKeyIds"
+          :key-text="(id) => id.slice(-3)"
+          @key-click="(id) => toggleBatchKey(id)"
+        />
+        <p>選択キー: {{ batchKeyIds.length }}</p>
+        <div class="batch-controls">
+          <label
+            >rowピン<select v-model="batchRow" data-testid="batch-row-select">
+              <option value="">選択…</option>
+              <option
+                v-for="pin in pinRefs.filter((x) => x !== 'VCC' && x !== 'GND')"
+                :key="`br-${pin}`"
+                :value="pin"
+              >
+                {{ pin }}
+              </option>
+            </select></label
+          >
+          <button
+            @click="
+              if (batchRow && !batchRows.includes(batchRow)) batchRows.push(batchRow);
+              batchRow = '';
+            "
+          >
+            rowへ追加
+          </button>
+          <ol>
+            <li v-for="(pin, i) in batchRows" :key="`br-${i}-${pin}`">
+              {{ i }}: {{ pin }} <button @click="moveBatchPin('row', i, -1)">↑</button
+              ><button @click="moveBatchPin('row', i, 1)">↓</button
+              ><button @click="batchRows.splice(i, 1)">除去</button>
+            </li>
+          </ol>
+          <label
+            >colピン<select v-model="batchCol" data-testid="batch-col-select">
+              <option value="">選択…</option>
+              <option
+                v-for="pin in pinRefs.filter((x) => x !== 'VCC' && x !== 'GND')"
+                :key="`bc-${pin}`"
+                :value="pin"
+              >
+                {{ pin }}
+              </option>
+            </select></label
+          >
+          <button
+            @click="
+              if (batchCol && !batchCols.includes(batchCol)) batchCols.push(batchCol);
+              batchCol = '';
+            "
+          >
+            colへ追加
+          </button>
+          <ol>
+            <li v-for="(pin, i) in batchCols" :key="`bc-${i}-${pin}`">
+              {{ i }}: {{ pin }} <button @click="moveBatchPin('col', i, -1)">↑</button
+              ><button @click="moveBatchPin('col', i, 1)">↓</button
+              ><button @click="batchCols.splice(i, 1)">除去</button>
+            </li>
+          </ol>
+          <label
+            >ダイオード<select v-model="batchDiode">
+              <option value="">なし</option>
+              <option value="a-to-b">a-to-b</option>
+              <option value="b-to-a">b-to-a</option>
+            </select></label
+          >
+          <button
+            data-testid="batch-wire"
+            :disabled="!batchKeyIds.length || !batchRows.length || !batchCols.length"
+            @click="
+              batchPreviewOpen = true;
+              batchError = '';
+            "
+          >
+            割当プレビュー
+          </button>
+          <p v-if="batchCapacityError" role="alert" data-testid="batch-capacity-error">
+            容量不足: {{ batchOrderedKeys.length }} keys / {{ batchRows.length * batchCols.length }} positions
+          </p>
+          <p v-if="batchError" role="alert">{{ batchError }}</p>
+          <section v-if="batchPreviewOpen" data-testid="batch-preview">
+            <table>
+              <thead>
+                <tr>
+                  <th>キー</th>
+                  <th>rowピン</th>
+                  <th>colピン</th>
+                  <th>既存配線</th>
+                </tr>
+              </thead>
+              <tbody>
+                <tr v-for="item in batchPreview" :key="item.key">
+                  <td>{{ item.key }}</td>
+                  <td>{{ item.row }}</td>
+                  <td>{{ item.col }}</td>
+                  <td>{{ item.overwrite ? "上書き" : "新規" }}</td>
+                </tr>
+              </tbody>
+            </table>
+            <button data-testid="batch-confirm" :disabled="batchCapacityError" @click="batchWire">
+              この内容で確定
+            </button>
+            <button @click="batchPreviewOpen = false">キャンセル</button>
+          </section>
+        </div>
+      </section>
+      <section class="box">
+        <h3>LEDチェーン</h3>
+        <label>チェーンID <input v-model="chainId" /></label
+        ><label>データピン <input v-model="chainData" list="pin-options" placeholder="provider.pin" /></label
+        ><datalist id="pin-options">
+          <option v-for="pin in pinRefs" :key="pin">{{ pin }}</option></datalist
+        ><button @click="makeChain">作成</button>
+        <label
+          >編集するチェーン
+          <select v-model="selectedChainId">
+            <option value="">選択…</option>
+            <option v-for="c in chains" :key="c.id" :value="c.id">{{ c.id }}</option>
+          </select></label
+        >
+        <p>対象は全バリアントのper-key LEDキーと@led部品ノードです。</p>
+        <label
+          >追加するLED
+          <select v-model="ledCandidate" data-testid="led-candidate">
+            <option value="">選択…</option>
+            <option v-for="n in nodes" :key="n.id" :value="n.id">{{ n.label }}</option>
+          </select></label
+        >
+        <button data-testid="led-add" :disabled="!ledCandidate || !chain" @click="addLedCandidate">
+          チェーン末尾へ追加
+        </button>
+        <KeyboardView
+          v-if="chain"
+          :phy="project.phy"
+          :selection="variants"
+          :selected-ids="chain.order"
+          :key-text="(id) => String(chain!.order.indexOf(id) + 1 || '')"
+          @key-click="
+            (id) => {
+              if (nodes.some((n) => n.id === id) && !chain!.order.includes(id))
+                setOrder([...chain!.order, id]);
+            }
+          "
+        />
+        <ol>
+          <li v-for="(id, i) in chain?.order ?? []" :key="`${id}-${i}`">
+            {{ i }} · {{ id }} <button @click="moveLed(i, -1)">↑</button
+            ><button @click="moveLed(i, 1)">↓</button><button @click="removeLed(i)">除去</button>
+          </li>
+        </ol>
+      </section>
+    </div>
+  </section>
+</template>
+
+<style scoped>
+.elc-panel {
+  height: 100%;
+  overflow: auto;
+  padding: 12px;
+  background: #fff;
+  border: 1px solid #cbd1da;
+  border-radius: 6px;
+}
+.elc-grid {
+  display: grid;
+  grid-template-columns: minmax(230px, 1fr) minmax(320px, 1.5fr) minmax(230px, 1fr);
+  gap: 10px;
+}
+.box {
+  padding: 10px;
+  border: 1px solid #d2d7df;
+  border-radius: 5px;
+  overflow: auto;
+}
+.box label {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  margin: 6px 0;
+}
+.box input,
+.box select {
+  max-width: 170px;
+}
+.wiring-box {
+  min-width: 0;
+}
+.edit-form {
+  border-top: 1px solid #ddd;
+  padding-top: 6px;
+}
+.edit-form label {
+  flex-wrap: wrap;
+}
+.batch-controls {
+  padding: 8px;
+  background: #f6f8fa;
+  border-radius: 4px;
+}
+.batch-controls ol {
+  margin-top: 4px;
+}
+.warn-text {
+  color: #985c00;
+}
+.error-text {
+  color: #b42318;
+}
+.warn :deep(rect) {
+  fill: #fde68a;
+}
+.error :deep(rect) {
+  fill: #fecaca;
+}
+</style>

mock/src/ui/panels/GeneratorPanel.vue

@@ -0,0 +1,275 @@
+<script setup lang="ts">
+import { computed, ref, watch } from "vue";
+import { defaultVariantSelection, type ProjectFile } from "../../domain/project";
+import type { Node, VariantGroupNode } from "../../domain/phy";
+import { flattenKeys } from "../../domain/geometry";
+import { mcuPinCandidates } from "../../domain/elc";
+import { generateMockTarget } from "../../domain/generator";
+import type { Dispatch } from "../types";
+import KeyboardView from "../common/KeyboardView.vue";
+
+const props = defineProps<{ project: ProjectFile; dispatch: Dispatch }>();
+const selection = computed(() => ({
+  ...defaultVariantSelection(props.project.phy),
+  ...props.project.output.variantSelection,
+}));
+const groups = computed(() => {
+  const all: VariantGroupNode[] = [];
+  const visit = (ns: Node[]) =>
+    ns.forEach((n) => {
+      if (n.type === "cluster") visit(n.children);
+      else if (n.type === "variantGroup") {
+        all.push(n);
+        n.children.forEach((v) => visit(v.children));
+      }
+    });
+  visit(props.project.phy.root);
+  return all;
+});
+const pins = computed(() => [
+  ...new Set(
+    props.project.elc.providers.flatMap((p) =>
+      p.kind === "mcu"
+        ? mcuPinCandidates(p).map((x) => `${p.id}.${x}`)
+        : Array.from({ length: p.channels }, (_, i) => `${p.id}.${i}`),
+    ),
+  ),
+]);
+const rowAdd = ref(""),
+  colAdd = ref("");
+const result = ref<ReturnType<typeof generateMockTarget> | null>(null);
+watch(
+  () => props.project,
+  () => {
+    result.value = null;
+  },
+);
+const rows = computed(() => props.project.output.matrix?.rowPins ?? []),
+  cols = computed(() => props.project.output.matrix?.colPins ?? []);
+const flatKeys = computed(() => flattenKeys(props.project.phy, selection.value).filter((x) => !x.key.decal));
+const mappingById = computed(() => new Map((result.value?.target?.mapping ?? []).map((m) => [m.keyId, m])));
+function setVariant(groupId: string, variantId: string) {
+  props.dispatch("出力構成", (p) => ({
+    ...p,
+    output: { ...p.output, variantSelection: { ...selection.value, [groupId]: variantId } },
+  }));
+  result.value = null;
+}
+function setPins(kind: "rowPins" | "colPins", value: string[]) {
+  props.dispatch(kind === "rowPins" ? "rowピン順序" : "colピン順序", (p) => ({
+    ...p,
+    output: {
+      ...p.output,
+      matrix: {
+        ...p.output.matrix,
+        kind: "matrix",
+        rowPins: [...(p.output.matrix?.rowPins ?? [])],
+        colPins: [...(p.output.matrix?.colPins ?? [])],
+        [kind]: value,
+      },
+    },
+  }));
+  result.value = null;
+}
+function addPin(kind: "rowPins" | "colPins", pin: string) {
+  if (!pin) return;
+  const current = kind === "rowPins" ? rows.value : cols.value;
+  if (current.includes(pin)) return;
+  setPins(kind, [...current, pin]);
+  if (kind === "rowPins") rowAdd.value = "";
+  else colAdd.value = "";
+}
+function movePin(kind: "rowPins" | "colPins", index: number, d: number) {
+  const next = [...(kind === "rowPins" ? rows.value : cols.value)],
+    to = index + d;
+  if (to < 0 || to >= next.length) return;
+  [next[index], next[to]] = [next[to]!, next[index]!];
+  setPins(kind, next);
+}
+function removePin(kind: "rowPins" | "colPins", index: number) {
+  const next = [...(kind === "rowPins" ? rows.value : cols.value)];
+  next.splice(index, 1);
+  setPins(kind, next);
+}
+function generate() {
+  result.value = generateMockTarget(props.project);
+}
+function download() {
+  if (!result.value?.target) return;
+  const blob = new Blob([JSON.stringify(result.value.target, null, 2)], { type: "application/json" });
+  const url = URL.createObjectURL(blob);
+  const a = document.createElement("a");
+  a.href = url;
+  a.download = "mock-target.json";
+  a.click();
+  URL.revokeObjectURL(url);
+}
+function keyText(id: string) {
+  const m = mappingById.value.get(id);
+  return m ? `${m.number}\nr${m.row} c${m.col}` : id.slice(-3);
+}
+function keyClass(id: string) {
+  return mappingById.value.has(id) ? "ok" : "muted";
+}
+</script>
+
+<template>
+  <section class="generator-panel">
+    <h2>Generator · プレビュー</h2>
+    <p class="notice">
+      これは検証用の <code>mock-target.json</code> です。QMKにそのまま渡せる生成物ではありません。
+    </p>
+    <div class="settings">
+      <section class="box">
+        <h3>出力構成</h3>
+        <label v-for="g in groups" :key="g.id"
+          >{{ g.name }}
+          <select
+            :value="selection[g.id] ?? g.default"
+            @change="setVariant(g.id, ($event.target as HTMLSelectElement).value)"
+          >
+            <option v-for="v in g.children" :key="v.id" :value="v.id">{{ v.name }}</option>
+          </select></label
+        >
+        <p v-if="!groups.length">バリアントグループなし</p>
+      </section>
+      <section class="box">
+        <h3>Matrix row / col</h3>
+        <p>ELCで使うピン候補から順序を設定します。番号はリスト順です。</p>
+        <h4>rowPins</h4>
+        <ol>
+          <li v-for="(pin, i) in rows" :key="`${pin}-${i}`">
+            {{ i }}: {{ pin }} <button @click="movePin('rowPins', i, -1)">↑</button
+            ><button @click="movePin('rowPins', i, 1)">↓</button
+            ><button @click="removePin('rowPins', i)">削除</button>
+          </li>
+        </ol>
+        <select v-model="rowAdd" data-testid="row-pin-select">
+          <option value="">ピンを選択…</option>
+          <option v-for="pin in pins" :key="`r${pin}`">{{ pin }}</option></select
+        ><button @click="addPin('rowPins', rowAdd)">row追加</button>
+        <h4>colPins</h4>
+        <ol>
+          <li v-for="(pin, i) in cols" :key="`${pin}-${i}`">
+            {{ i }}: {{ pin }} <button @click="movePin('colPins', i, -1)">↑</button
+            ><button @click="movePin('colPins', i, 1)">↓</button
+            ><button @click="removePin('colPins', i)">削除</button>
+          </li>
+        </ol>
+        <select v-model="colAdd" data-testid="col-pin-select">
+          <option value="">ピンを選択…</option>
+          <option v-for="pin in pins" :key="`c${pin}`">{{ pin }}</option></select
+        ><button @click="addPin('colPins', colAdd)">col追加</button>
+        <p v-if="!pins.length">ELCのピン提供者を先に追加してください。</p>
+      </section>
+      <section class="box preview">
+        <h3>生成結果</h3>
+        <button data-testid="generate-button" @click="generate">生成</button
+        ><span v-if="result?.target" data-testid="mapping-count"> {{ result.target.mapping.length }}行</span>
+        <div v-if="result && !result.target" class="errors">
+          <h4>生成を止めた理由 ({{ result.errors.length }})</h4>
+          <ul>
+            <li v-for="(e, i) in result.errors" :key="`${e.code}-${i}`">
+              <b>{{ e.code }}</b> {{ e.message }} <small>{{ e.ids?.join(", ") }}</small>
+            </li>
+          </ul>
+        </div>
+        <template v-if="result?.target"
+          ><button data-testid="download-target" @click="download">mock-target.jsonをダウンロード</button>
+          <table>
+            <thead>
+              <tr>
+                <th>出力番号</th>
+                <th>keyId</th>
+                <th>row</th>
+                <th>col</th>
+                <th>ラベル</th>
+              </tr>
+            </thead>
+            <tbody>
+              <tr v-for="m in result.target.mapping" :key="m.keyId">
+                <td>{{ m.number }}</td>
+                <td>{{ m.keyId }}</td>
+                <td>{{ m.row }}</td>
+                <td>{{ m.col }}</td>
+                <td>{{ m.label }}</td>
+              </tr>
+            </tbody>
+          </table>
+          <h4>レイヤー配列</h4>
+          <section v-for="layer in result.target.keymaps" :key="layer.name">
+            <b>{{ layer.name }}</b
+            ><code class="array">{{ JSON.stringify(layer.keycodes) }}</code>
+          </section>
+        </template>
+      </section>
+    </div>
+    <section class="layout-box">
+      <h3>選択構成 · 番号 / row,col</h3>
+      <KeyboardView :phy="project.phy" :selection="selection" :key-text="keyText" :key-class="keyClass" />
+    </section>
+  </section>
+</template>
+
+<style scoped>
+.generator-panel {
+  height: 100%;
+  overflow: auto;
+  padding: 12px;
+  background: #fff;
+  border: 1px solid #cbd1da;
+  border-radius: 6px;
+}
+.notice {
+  padding: 8px;
+  background: #fff4d6;
+}
+.settings {
+  display: grid;
+  grid-template-columns: minmax(220px, 0.8fr) minmax(260px, 1fr) minmax(380px, 1.5fr);
+  gap: 10px;
+}
+.box,
+.layout-box {
+  padding: 10px;
+  border: 1px solid #d2d7df;
+  border-radius: 5px;
+  overflow: auto;
+}
+.box label {
+  display: flex;
+  gap: 8px;
+  align-items: center;
+  margin: 8px 0;
+}
+.box h3,
+.layout-box h3 {
+  margin-top: 0;
+}
+.preview table {
+  border-collapse: collapse;
+  width: 100%;
+  margin-top: 8px;
+}
+.preview th,
+.preview td {
+  border: 1px solid #d8dde5;
+  padding: 3px 5px;
+  text-align: left;
+}
+.errors {
+  color: #9b1c1c;
+}
+.array {
+  display: block;
+  overflow-wrap: anywhere;
+  margin: 5px 0 10px;
+}
+.layout-box {
+  margin-top: 10px;
+}
+.layout-box :deep(.kv-key text) {
+  font-size: 0.16px;
+  white-space: pre;
+}
+</style>

mock/src/ui/panels/MapPanel.vue

@@ -0,0 +1,337 @@
+<script setup lang="ts">
+import { computed, ref } from "vue";
+import { flattenKeys } from "../../domain/geometry";
+import {
+  assignKey,
+  deleteLayer,
+  isEditableKeycode,
+  parseKeycode,
+  reorderLayer,
+  renameLayer,
+  unassignKey,
+  unassignedKeys,
+  addLayer,
+} from "../../domain/map";
+import { defaultVariantSelection, type ProjectFile } from "../../domain/project";
+import { getKeycodeLabel } from "../../domain/keycodeLabels";
+import { qmkBasicKeycodes } from "../../domain/qmkBasicKeycodes";
+import type { Dispatch } from "../types";
+import KeyboardView from "../common/KeyboardView.vue";
+
+const props = defineProps<{ project: ProjectFile; dispatch: Dispatch; editable?: boolean }>();
+const selectedLayer = ref("Base"),
+  selectedKey = ref(""),
+  draft = ref(""),
+  newLayerName = ref(""),
+  renameValue = ref(""),
+  error = ref("");
+const selection = computed(() => ({
+  ...defaultVariantSelection(props.project.phy),
+  ...props.project.output.variantSelection,
+}));
+const keys = computed(() => flattenKeys(props.project.phy, selection.value).filter((k) => !k.key.decal));
+const layer = computed(
+  () => props.project.map.layers.find((x) => x.name === selectedLayer.value) ?? props.project.map.layers[0],
+);
+const keyLabels = computed(
+  () => new Map(keys.value.map((x) => [x.key.id, x.key.labels?.find(Boolean) || x.key.id])),
+);
+const assignments = computed(() => new Map((layer.value?.keymap ?? []).map((a) => [a.keyId, a.keycode])));
+const selectedCode = computed(() => assignments.value.get(selectedKey.value) ?? "");
+const selectedCodeEditable = computed(() => !selectedCode.value || isEditableKeycode(selectedCode.value));
+const missing = computed(() =>
+  unassignedKeys(
+    props.project.map,
+    layer.value?.name ?? "",
+    keys.value.map((x) => x.key.id),
+  ),
+);
+const candidates = computed(() => {
+  const keycodes = qmkBasicKeycodes
+    .filter((entry) => entry.group === "basic" || entry.group === "modifiers" || entry.group === "internal")
+    .map((entry) => entry.key);
+  const modifierFunctions = ["LCTL", "LSFT", "LALT", "LGUI", "RCTL", "RSFT", "RALT", "RGUI"];
+  const out = [...keycodes];
+  for (const l of props.project.map.layers)
+    for (const code of ["MO", "TG", "TO", "TT", "DF", "OSL"]) out.push(`${code}(${l.name})`);
+  for (const l of props.project.map.layers) for (const kc of keycodes) out.push(`LT(${l.name}, ${kc})`);
+  for (const mod of modifierFunctions) for (const kc of keycodes) out.push(`${mod}(${kc})`);
+  return [...new Set(out)];
+});
+function fail(e: unknown) {
+  error.value = e instanceof Error ? e.message : String(e);
+}
+function pickLayer(name: string) {
+  selectedLayer.value = name;
+  selectedKey.value = "";
+  error.value = "";
+}
+function chooseKey(id: string) {
+  selectedKey.value = id;
+  draft.value = assignments.value.get(id) ?? "";
+  error.value = "";
+}
+function saveAssignment() {
+  if (props.editable === false || !selectedKey.value || !layer.value || !selectedCodeEditable.value) return;
+  if (draft.value.trim() === selectedCode.value) return;
+  try {
+    props.dispatch("MAPキー割り当て", (p) => ({
+      ...p,
+      map: assignKey(p.map, layer.value!.name, selectedKey.value, draft.value.trim()),
+    }));
+    error.value = "";
+  } catch (e) {
+    fail(e);
+  }
+}
+function add() {
+  if (props.editable === false) return;
+  if (!newLayerName.value.trim()) {
+    error.value = "レイヤー名を入力してください。";
+    return;
+  }
+  try {
+    props.dispatch("MAPレイヤー追加", (p) => ({ ...p, map: addLayer(p.map, newLayerName.value.trim()) }));
+    selectedLayer.value = newLayerName.value.trim();
+    newLayerName.value = "";
+    error.value = "";
+  } catch (e) {
+    fail(e);
+  }
+}
+function rename() {
+  if (props.editable === false) return;
+  if (!layer.value) return;
+  if (!renameValue.value.trim()) {
+    error.value = "新しいレイヤー名を入力してください。";
+    return;
+  }
+  try {
+    props.dispatch("MAPレイヤー改名", (p) => ({
+      ...p,
+      map: renameLayer(p.map, layer.value!.name, renameValue.value.trim()),
+    }));
+    selectedLayer.value = renameValue.value.trim();
+    renameValue.value = "";
+    error.value = "";
+  } catch (e) {
+    fail(e);
+  }
+}
+function remove() {
+  if (props.editable === false) return;
+  if (!layer.value) return;
+  try {
+    props.dispatch("MAPレイヤー削除", (p) => ({ ...p, map: deleteLayer(p.map, layer.value!.name) }));
+    selectedLayer.value = props.project.map.layers[0]?.name ?? "";
+    error.value = "";
+  } catch (e) {
+    fail(e);
+  }
+}
+function move(delta: number) {
+  if (props.editable === false) return;
+  if (!layer.value) return;
+  const i = props.project.map.layers.findIndex((x) => x.name === layer.value!.name),
+    j = i + delta;
+  if (j < 0 || j >= props.project.map.layers.length) return;
+  props.dispatch("MAPレイヤー順序変更", (p) => ({ ...p, map: reorderLayer(p.map, layer.value!.name, j) }));
+}
+function unassign() {
+  if (props.editable === false || !layer.value || !selectedKey.value || !selectedCodeEditable.value) return;
+  props.dispatch("MAP割り当て解除", (p) => ({
+    ...p,
+    map: unassignKey(p.map, layer.value!.name, selectedKey.value),
+  }));
+  draft.value = "";
+  error.value = "";
+}
+function keyText(id: string) {
+  const code = assignments.value.get(id);
+  if (!code) return "";
+  const parsed = parseKeycode(code);
+  const label = parsed.kind === "basic" ? getKeycodeLabel(code) : undefined;
+  return label ? `${code}\n${label}` : code;
+}
+function keyClass(id: string) {
+  const code = assignments.value.get(id);
+  if (!code) return "warn";
+  return isEditableKeycode(code) ? undefined : "muted";
+}
+</script>
+
+<template>
+  <section class="map-panel">
+    <h2>Keymap Designer</h2>
+    <div class="map-columns">
+      <aside class="map-layers">
+        <h3>レイヤー</h3>
+        <div class="layer-tabs" role="tablist">
+          <button
+            v-for="(item, i) in project.map.layers"
+            :key="item.name"
+            role="tab"
+            :aria-selected="selectedLayer === item.name"
+            :class="{ active: selectedLayer === item.name }"
+            @click="pickLayer(item.name)"
+          >
+            {{ item.name }}
+          </button>
+        </div>
+        <label
+          >追加する名前
+          <input
+            v-model="newLayerName"
+            aria-label="追加するレイヤー名"
+            :disabled="editable === false" /></label
+        ><button data-testid="map-add-layer" :disabled="editable === false" @click="add">追加</button>
+        <label
+          >新しい名前
+          <input
+            v-model="renameValue"
+            aria-label="新しい名前"
+            :placeholder="layer?.name"
+            :disabled="editable === false" /></label
+        ><button data-testid="map-rename-layer" :disabled="editable === false" @click="rename">改名</button>
+        <div>
+          <button
+            aria-label="レイヤーを上へ"
+            :disabled="editable === false || !layer || project.map.layers[0]?.name === layer.name"
+            @click="move(-1)"
+          >
+            ↑</button
+          ><button
+            aria-label="レイヤーを下へ"
+            :disabled="editable === false || !layer || project.map.layers.at(-1)?.name === layer.name"
+            @click="move(1)"
+          >
+            ↓</button
+          ><button data-testid="map-delete-layer" :disabled="editable === false" @click="remove">削除</button>
+        </div>
+        <p v-if="error" role="alert" class="map-error">{{ error }}</p>
+      </aside>
+      <main class="map-editor">
+        <h3>{{ layer?.name }} · キーマップ</h3>
+        <KeyboardView
+          :phy="project.phy"
+          :selection="selection"
+          :selected-ids="selectedKey ? [selectedKey] : []"
+          :key-text="keyText"
+          :key-class="keyClass"
+          @key-click="(id) => chooseKey(id)"
+        />
+        <div v-if="selectedKey" class="map-assignment">
+          <strong>{{ keyLabels.get(selectedKey) }} · {{ selectedKey }}</strong>
+          <label
+            >キーコード
+            <input
+              v-model="draft"
+              list="map-keycode-candidates"
+              aria-label="キーコード"
+              @keydown.enter.prevent="saveAssignment"
+              :disabled="editable === false || !selectedCodeEditable"
+          /></label>
+          <datalist id="map-keycode-candidates">
+            <option v-for="value in candidates" :key="value" :value="value" />
+          </datalist>
+          <button @click="saveAssignment" :disabled="editable === false || !selectedCodeEditable">
+            割り当て</button
+          ><button @click="unassign" :disabled="editable === false || !selectedCodeEditable">
+            割り当て解除
+          </button>
+          <p v-if="selectedCode && !selectedCodeEditable" role="status">
+            未知のキーコードは保持し、表示のみです。
+          </p>
+          <p v-if="draft && !isEditableKeycode(draft.trim())" class="map-error">
+            このキーコードは編集対象外です。
+          </p>
+        </div>
+        <section class="map-missing">
+          <h3>未割り当て · {{ missing.length }} keys</h3>
+          <ul>
+            <li v-for="id in missing" :key="id">
+              <button @click="chooseKey(id)">{{ keyLabels.get(id) }} · {{ id }}</button>
+            </li>
+          </ul>
+        </section>
+      </main>
+    </div>
+  </section>
+</template>
+
+<style scoped>
+.map-panel {
+  height: 100%;
+  overflow: auto;
+  padding: 10px;
+  background: #fff;
+  border: 1px solid #cbd1da;
+  border-radius: 6px;
+}
+.map-panel h2 {
+  margin: 0 0 10px;
+}
+.map-columns {
+  display: grid;
+  grid-template-columns: 260px minmax(400px, 1fr);
+  gap: 16px;
+}
+.map-layers {
+  border-right: 1px solid #d5dae2;
+  padding-right: 12px;
+}
+.map-layers h3,
+.map-editor h3 {
+  margin: 8px 0;
+}
+.map-layers label,
+.map-assignment label {
+  display: flex;
+  gap: 6px;
+  margin: 9px 0;
+  align-items: center;
+}
+.map-layers input {
+  min-width: 0;
+  width: 120px;
+}
+.layer-tabs {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 4px;
+  margin: 8px 0;
+}
+.layer-tabs button.active {
+  background: #dce9ff;
+}
+.map-editor {
+  min-width: 0;
+}
+.map-assignment {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 8px;
+  margin: 12px 0;
+  padding: 8px;
+  background: #f5f7fa;
+}
+.map-assignment input {
+  width: 240px;
+}
+.map-missing ul {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 5px;
+  padding: 0;
+  list-style: none;
+}
+.map-error {
+  color: #a21d16;
+  background: #fff0ef;
+  padding: 6px;
+}
+.map-panel :deep(.keyboard-view) {
+  max-height: 48vh;
+}
+</style>

mock/src/ui/phy/NodeSvg.vue

@@ -0,0 +1,161 @@
+<script setup lang="ts">
+import type { Node } from "../../domain/phy";
+import { keyPath } from "./logic";
+defineOptions({ name: "NodeSvg" });
+defineProps<{
+  nodes: Node[];
+  selected: string[];
+  variants: Record<string, string>;
+  cut: string[];
+  dim: boolean;
+}>();
+const emit = defineEmits<{
+  down: [e: PointerEvent, n: Node, el: SVGGElement];
+  focus: [id: string];
+}>();
+</script>
+<template>
+  <g
+    v-for="n in nodes"
+    :key="n.id"
+    :data-node-type="n.type"
+    :data-node-id="n.id"
+    :transform="`translate(${n.transform.x} ${n.transform.y}) rotate(${n.transform.rotation})`"
+    :class="{ dim: dim, cut: cut.includes(n.id) }"
+    @dblclick.stop="emit('focus', n.id)"
+  >
+    <g
+      v-if="n.type === 'key'"
+      class="node"
+      @pointerdown.stop="emit('down', $event, n, $event.currentTarget as SVGGElement)"
+      ><path
+        v-if="keyPath(n.size)"
+        :d="keyPath(n.size)"
+        class="key-face"
+        :class="{ chosen: selected.includes(n.id), ghost: n.ghost, decal: n.decal }"
+      /><rect
+        v-else
+        :width="n.size.w"
+        :height="n.size.h"
+        rx=".06"
+        class="key-face"
+        :class="{ chosen: selected.includes(n.id), ghost: n.ghost, decal: n.decal }"
+      /><text class="key-label" x=".08" y=".24">{{ n.labels?.find(Boolean) }}</text></g
+    >
+    <g
+      v-else-if="n.type === 'component'"
+      class="node"
+      @pointerdown.stop="emit('down', $event, n, $event.currentTarget as SVGGElement)"
+      ><rect
+        v-if="n.partGroup === '@led'"
+        x="-.14"
+        y="-.14"
+        width=".28"
+        height=".28"
+        transform="rotate(45)"
+        class="part led"
+        :class="{ chosen: selected.includes(n.id) }"
+      /><g v-else-if="n.partGroup === '@encoder'" class="part" :class="{ chosen: selected.includes(n.id) }"
+        ><circle r=".16" /><path d="M -.1 0 H .1 M 0 -.1 V .1" /></g
+      ><path
+        v-else-if="n.partGroup === '@screw'"
+        d="M -.14 -.14 L .14 .14 M .14 -.14 L -.14 .14"
+        class="part screw"
+        :class="{ chosen: selected.includes(n.id) }"
+      /><rect
+        v-else-if="n.partGroup === '@oled'"
+        x="-.2"
+        y="-.12"
+        width=".4"
+        height=".24"
+        rx=".025"
+        class="part oled"
+        :class="{ chosen: selected.includes(n.id) }"
+      /><circle v-else r=".14" class="part" :class="{ chosen: selected.includes(n.id) }" /><text
+        x=".2"
+        y=".04"
+        class="part-label"
+        >{{ n.partGroup || "part" }}</text
+      ></g
+    >
+    <g
+      v-else-if="n.type === 'cluster'"
+      class="group"
+      @pointerdown.self="emit('down', $event, n, $event.currentTarget as SVGGElement)"
+      ><NodeSvg
+        :nodes="n.children"
+        :selected="selected"
+        :variants="variants"
+        :cut="cut"
+        :dim="dim"
+        @down="(e, c, el) => emit('down', e, c, el)"
+        @focus="(id) => emit('focus', id)"
+      /><text x="0" y="-.12" class="group-label">{{ n.name }}</text></g
+    >
+    <g v-else class="group"
+      ><NodeSvg
+        v-for="v in n.children.filter((v) => v.id === (variants[n.id] || n.default))"
+        :key="v.id"
+        :nodes="v.children"
+        :selected="selected"
+        :variants="variants"
+        :cut="cut"
+        :dim="dim"
+        @down="(e, c, el) => emit('down', e, c, el)"
+        @focus="(id) => emit('focus', id)"
+    /></g>
+  </g>
+</template>
+<style scoped>
+.node {
+  cursor: grab;
+}
+.key-face {
+  fill: #f8cc78;
+  stroke: #5b4a2b;
+  stroke-width: 0.03;
+}
+.key-face.ghost {
+  opacity: 0.4;
+}
+.key-face.decal {
+  fill: #fff;
+  stroke-dasharray: 0.08 0.06;
+}
+.key-label,
+.part-label,
+.group-label {
+  font-size: 0.14px;
+  pointer-events: none;
+}
+.part {
+  fill: #b4d5ef;
+  stroke: #315d7a;
+  stroke-width: 0.03;
+}
+.part.chosen {
+  stroke: #1769d2;
+  stroke-width: 2px;
+  vector-effect: non-scaling-stroke;
+}
+.part.screw {
+  fill: none;
+}
+.part path {
+  fill: none;
+  stroke: #315d7a;
+  stroke-width: 0.03;
+}
+.group {
+  cursor: default;
+}
+.dim {
+  opacity: 0.25;
+}
+.cut {
+  opacity: 0.3;
+}
+.group-label {
+  fill: #222;
+}
+</style>

mock/src/ui/phy/PhyBadgeLayer.vue

@@ -0,0 +1,66 @@
+<script setup lang="ts">
+import { computed } from "vue";
+import type { Node } from "../../domain/phy";
+import type { Affine } from "../../domain/geometry";
+import { variantBadges } from "./logic";
+const props = withDefaults(
+  defineProps<{
+    nodes: Node[];
+    variants: Record<string, string>;
+    zoom: number;
+    dim?: boolean;
+    parent?: Affine;
+  }>(),
+  { dim: false, parent: () => ({ a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 }) },
+);
+const emit = defineEmits<{ badge: [g: Node, e: MouseEvent] }>();
+// ノードより後に描き、隣のキーの下に隠れないようにする
+const badges = computed(() => variantBadges(props.nodes, props.variants, props.zoom, props.parent));
+/** バッジは名前を書かず、表示中のバリアント名はツールチップで示す。T-30。 */
+function badgeTitle(n: Extract<Node, { type: "variantGroup" }>) {
+  const shown = props.variants[n.id] || n.default;
+  const name = n.children.find((v) => v.id === shown)?.name ?? "";
+  return `${n.name}: ${name}${shown === n.default ? "(既定)" : ""}`;
+}
+</script>
+<template>
+  <g class="badge-layer" :class="{ dim }">
+    <g
+      v-for="badge in badges"
+      :key="badge.group.id"
+      :data-badge-id="badge.group.id"
+      class="badge"
+      @click.stop="!dim && emit('badge', badge.group, $event)"
+      ><rect :x="badge.x" :y="badge.y" :width="badge.size" :height="badge.size" :rx="3 / zoom" /><text
+        :x="badge.x + badge.size / 2"
+        :y="badge.y + badge.size / 2"
+        :style="{ fontSize: `${12 / zoom}px` }"
+        >⇄</text
+      ><title>{{ badgeTitle(badge.group) }}</title></g
+    >
+  </g>
+</template>
+<style scoped>
+.badge {
+  cursor: pointer;
+  pointer-events: all;
+}
+.dim {
+  opacity: 0.25;
+}
+.dim .badge {
+  cursor: default;
+}
+.badge rect {
+  fill: #fff3c2;
+  stroke: #8a691b;
+  stroke-width: 1px;
+  vector-effect: non-scaling-stroke;
+}
+.badge text {
+  fill: #302709;
+  text-anchor: middle;
+  dominant-baseline: central;
+  pointer-events: none;
+}
+</style>

mock/src/ui/phy/PhyEditor.vue

@@ -0,0 +1,645 @@
+<script setup lang="ts">
+import { computed, nextTick, onMounted, onUnmounted, ref, watch } from "vue";
+import type { ProjectFile } from "../../domain/project";
+import type { Node } from "../../domain/phy";
+import type { Dispatch } from "../types";
+import { reframe } from "../../domain/phyCommands";
+import { listDeleteReferences } from "../../domain/deleteCascade";
+import PhyTree from "./PhyTree.vue";
+import NodeSvg from "./NodeSvg.vue";
+import PhySelectionLayer from "./PhySelectionLayer.vue";
+import PhyBadgeLayer from "./PhyBadgeLayer.vue";
+import PhyToolbar from "./PhyToolbar.vue";
+import PhyProperties from "./PhyProperties.vue";
+import PhyHoldOverlay from "./PhyHoldOverlay.vue";
+import PhyMountLayer from "./PhyMountLayer.vue";
+import {
+  normalizeSelection,
+  nextGrid,
+  insertionContainer,
+  structuralNodes,
+  visibleNodeIds,
+  stabilizerSelections,
+  selectedStabilizers,
+  withStabilizers,
+} from "./logic";
+import { stabilizerCandidates } from "../../domain/stabilizers";
+import { usePhyClipboard } from "./usePhyClipboard";
+import { usePhyViewport } from "./usePhyViewport";
+import { usePhyCanvasPointer } from "./usePhyCanvasPointer";
+import { HOLD_DELAY, HOLD_INTERVAL, type HoldMode } from "./usePhyLongPress";
+import { usePhyKeyboard } from "./usePhyKeyboard";
+import { usePhyCommands } from "./usePhyCommands";
+import { usePhyCanvasView } from "./usePhyCanvasView";
+import { usePhyTreeModel } from "./usePhyTreeModel";
+const props = defineProps<{
+  project: ProjectFile;
+  dispatch: Dispatch;
+  mismatch: boolean;
+  beginHistory: () => void;
+  commitHistory: () => void;
+}>();
+const emit = defineEmits<{ error: [text: string] }>();
+const selected = ref<string[]>([]),
+  variants = ref<Record<string, string>>({}),
+  focus = ref<string | null>(null),
+  grid = ref<number>(0.25),
+  zoom = ref(52),
+  pan = ref({ x: 50, y: 50 }),
+  pane = ref<HTMLElement>(),
+  svg = ref<SVGSVGElement>(),
+  treeOpen = ref(true),
+  showHelp = ref(false),
+  popover = ref<string | null>(null),
+  cut = ref<string[]>([]),
+  confirm = ref<string | null>(null),
+  confirmIds = ref<string[]>([]),
+  confirmRefs = ref<ReturnType<typeof listDeleteReferences>>([]),
+  confirmPos = ref({ left: 12, top: 44 }),
+  popoverPos = ref({ left: 12, top: 44 }),
+  size = ref({ w: 900, h: 600 }),
+  longHint = ref("");
+watch(
+  () => props.project,
+  (p) => {
+    for (const g of structuralNodes(p.phy.root))
+      if (g.type === "variantGroup" && !variants.value[g.id]) variants.value[g.id] = g.default;
+  },
+  { immediate: true },
+);
+watch(
+  () => props.project.projectId,
+  async () => {
+    selected.value = [];
+    focus.value = null;
+    variants.value = {};
+    await nextTick();
+    fit();
+  },
+);
+const {
+  allNodes,
+  node,
+  parentId,
+  isAncestor,
+  selectedContainer,
+  groupForVariant,
+  parentLabel,
+  pressTargets,
+} = usePhyTreeModel(() => props.project, focus);
+const { fit, fitSelected, localPoint, wheel } = usePhyViewport({
+  project: () => props.project,
+  svg,
+  size,
+  zoom,
+  pan,
+  selected,
+  variants,
+  node,
+});
+function setSel(id: string, add = false) {
+  selected.value = normalizeSelection(
+    props.project.phy,
+    add
+      ? selected.value.includes(id)
+        ? selected.value.filter((x) => x !== id)
+        : [...selected.value, id]
+      : [id],
+  );
+  pane.value?.focus();
+}
+const canvasView = usePhyCanvasView({
+  project: () => props.project,
+  size,
+  pan,
+  zoom,
+  focus,
+  variants,
+  grid,
+  selected,
+  node,
+  parentId,
+  parentLabel,
+  selectedContainer,
+});
+const {
+  keys,
+  groupsAll,
+  outsideNodes,
+  gridLines,
+  variantGroups,
+  focusGridLines,
+  moveTargets,
+  parentMatrix: focusParentMatrix,
+  affineText,
+  focusCrumbs,
+  propertyNode: prop,
+} = canvasView;
+function focusIn(id: string) {
+  focus.value = id;
+  selected.value = [id];
+}
+onMounted(() => {
+  window.addEventListener("keydown", keyHandler);
+  window.addEventListener("keyup", spaceUp);
+  window.addEventListener("paste", pasteEvent);
+  window.addEventListener("copy", copyEvent);
+  window.addEventListener("cut", copyEvent);
+  fit();
+});
+onUnmounted(() => {
+  window.removeEventListener("keydown", keyHandler);
+  window.removeEventListener("keyup", spaceUp);
+  window.removeEventListener("paste", pasteEvent);
+  window.removeEventListener("copy", copyEvent);
+  window.removeEventListener("cut", copyEvent);
+});
+function dispatch(label: string, fn: (p: ProjectFile) => ProjectFile) {
+  try {
+    props.dispatch(label, fn);
+  } catch (e) {
+    emit("error", String(e));
+  }
+}
+function update(id: string, fn: (n: Node) => void, label = "プロパティ変更") {
+  dispatch(label, (p) => {
+    const q = structuredClone(p);
+    const n = allNodes(q.phy.root).find((x) => x.id === id);
+    if (n) fn(n);
+    return q;
+  });
+}
+const commands = usePhyCommands({
+  project: () => props.project,
+  selected,
+  variants,
+  focus,
+  grid,
+  zoom,
+  pan,
+  size,
+  svg,
+  pane,
+  popover,
+  confirm,
+  confirmIds,
+  confirmRefs,
+  confirmPos,
+  node,
+  allNodes,
+  parentId,
+  selectedContainer,
+  groupForVariant,
+  variantGroups: () => variantGroups.value,
+  dispatch,
+  emitError: (message) => emit("error", message),
+});
+const {
+  parentMatrix,
+  nodesInContainer,
+  directChildren,
+  tabItem,
+  chooseVariant,
+  keyAdd,
+  presetAdd,
+  partAdd,
+  makeCluster,
+  ungroup,
+  variantGroup,
+  duplicate,
+  moveSelectionTo,
+  askDelete,
+  deleteConfirmed,
+  setDefault,
+  addVariant: addVariantToGroup,
+} = commands;
+const { copyEvent, pasteEvent } = usePhyClipboard({
+  project: () => props.project,
+  mismatch: () => props.mismatch,
+  selected,
+  cut,
+  grid,
+  node,
+  selectedContainer,
+  insertionParent: () => insertionContainer(props.project.phy.root, focus.value, variants.value),
+  parentMatrix,
+  dispatch,
+  setSelected: (ids) => (selected.value = ids),
+});
+const priorChild = new Map<string, string>();
+function visibleIds(): Set<string> {
+  if (!focus.value) return new Set(allNodes().map((n) => n.id));
+  return visibleNodeIds(node(focus.value), variants.value);
+}
+const holdMode = ref<HoldMode>("loop");
+const rangeBox = ref<{ x: number; y: number; width: number; height: number } | null>(null);
+const pointer = usePhyCanvasPointer({
+  project: () => props.project,
+  svg,
+  pane,
+  pan,
+  zoom,
+  grid,
+  selected,
+  focus,
+  rangeBox,
+  allNodes,
+  keys: () => keys.value,
+  localPoint,
+  visibleIds,
+  mismatch: () => props.mismatch,
+  isAncestor,
+  parentLabel,
+  pressTargets,
+  holdMode,
+  setSelection: setSel,
+  beginHistory: props.beginHistory,
+  commitHistory: props.commitHistory,
+  dispatch,
+});
+const { canvasDown, down, spaceUp, hold, spaceHeld } = pointer;
+const keyHandler = usePhyKeyboard({
+  project: () => props.project,
+  mismatch: () => props.mismatch,
+  pane,
+  selected,
+  focus,
+  grid,
+  zoom,
+  showHelp,
+  popover,
+  confirm,
+  spaceHeld,
+  variants,
+  priorChild,
+  node,
+  allNodes,
+  parentId,
+  selectedContainer,
+  insertionParent: () => insertionContainer(props.project.phy.root, focus.value, variants.value),
+  nodesInContainer,
+  directChildren,
+  tabItem,
+  dispatch,
+  fit,
+  fitSelected,
+  focusIn,
+  makeCluster,
+  ungroup,
+  duplicate,
+  keyAdd,
+  askDelete,
+  deleteConfirmed,
+  chooseVariant,
+});
+function overlayPoint(clientX: number, clientY: number, width = 380, height = 240) {
+  const r = pane.value?.getBoundingClientRect();
+  return {
+    left: Math.max(4, Math.min(clientX - (r?.left ?? 0), (r?.width ?? width) - width - 4)),
+    top: Math.max(4, Math.min(clientY - (r?.top ?? 0), (r?.height ?? height) - height - 4)),
+  };
+}
+function openBadge(g: Node, e: PointerEvent | MouseEvent) {
+  if (focus.value && !visibleIds().has(g.id)) return;
+  popover.value = g.id;
+  const r = (e.currentTarget as Element).getBoundingClientRect();
+  const paneRect = pane.value?.getBoundingClientRect();
+  const left = r.right + 210 < (paneRect?.right ?? Infinity) ? r.left : r.left - 210;
+  const top = r.bottom + 150 < (paneRect?.bottom ?? Infinity) ? r.bottom + 4 : r.top - 150;
+  popoverPos.value = overlayPoint(left, top, 210, 150);
+}
+const showMounts = ref(false);
+const stabilizerChoice = computed(() => {
+  const item = prop.value;
+  if (item?.type !== "key") return null;
+  return {
+    candidates: stabilizerCandidates(item.size),
+    selected: selectedStabilizers(stabilizerSelections(props.project), item),
+  };
+});
+function onFocus(_id: string) {
+  if (
+    pointer.priorSelection().length === 1 &&
+    ["cluster", "variantGroup"].includes(node(pointer.priorSelection()[0]!)?.type || "")
+  )
+    focusIn(pointer.priorSelection()[0]!);
+}
+</script>
+<template>
+  <section class="workspace" :class="{ locked: mismatch, 'tree-closed': !treeOpen }">
+    <aside v-if="treeOpen" class="tree pane">
+      <PhyTree :nodes="project.phy.root" :selected="selected" @select="setSel" />
+    </aside>
+    <section ref="pane" class="canvas-pane pane" tabindex="0">
+      <PhyToolbar
+        :mismatch="mismatch"
+        :selected-count="selected.length"
+        :grid="grid"
+        :move-targets="moveTargets"
+        :focus="focus"
+        :crumbs="focus ? focusCrumbs(focus) : []"
+        @key-add="keyAdd()"
+        @preset-add="presetAdd"
+        @part-add="partAdd"
+        @cluster="makeCluster"
+        @ungroup="ungroup"
+        @variant-group="variantGroup"
+        @move-to="moveSelectionTo"
+        @duplicate="duplicate"
+        @delete="(event) => askDelete(undefined, event)"
+        @grid="grid = nextGrid(grid, 1)"
+        @fit="fit"
+        @fit-selected="fitSelected"
+        @zoom="(direction) => (zoom *= direction > 0 ? 1.15 : 1 / 1.15)"
+        @tree="treeOpen = !treeOpen"
+        @help="showHelp = true"
+        @focus="focus = $event"
+        :hold-mode="holdMode"
+        @hold-mode="holdMode = holdMode === 'loop' ? 'list' : 'loop'"
+        :show-mounts="showMounts"
+        @mounts="showMounts = !showMounts"
+      />
+      <PhyHoldOverlay
+        v-if="hold.open.value"
+        :mode="hold.mode.value"
+        :pos="hold.pos.value"
+        :names="hold.names.value"
+        :index="hold.index.value"
+        :step="hold.step.value"
+        :pointing="hold.pointing.value"
+      />
+      <div v-if="mismatch" class="warning">unitSize が一致しないため編集できません。</div>
+      <svg
+        ref="svg"
+        class="canvas"
+        :viewBox="`0 0 ${size.w} ${size.h}`"
+        @wheel.prevent="wheel"
+        @pointerdown="canvasDown"
+      >
+        <g :transform="`translate(${pan.x} ${pan.y}) scale(${zoom})`">
+          <path
+            v-if="!focus"
+            v-for="(line, i) in gridLines"
+            :key="i"
+            :d="line.d"
+            :class="{ major: line.major }"
+          />
+          <NodeSvg
+            v-if="focus && outsideNodes.length"
+            :nodes="outsideNodes"
+            :selected="[]"
+            :variants="variants"
+            :cut="cut"
+            :dim="true"
+          />
+          <g v-if="focus" :transform="affineText(focusParentMatrix(focus))">
+            <g
+              :transform="`translate(${node(focus)!.transform.x} ${node(focus)!.transform.y}) rotate(${node(focus)!.transform.rotation})`"
+            >
+              <path v-for="(line, i) in focusGridLines" :key="i" :d="line.d" :class="{ major: line.major }" />
+            </g>
+            <NodeSvg
+              :nodes="[node(focus)!]"
+              :selected="selected"
+              :variants="variants"
+              :cut="cut"
+              :dim="false"
+              @down="down"
+              @focus="onFocus"
+            />
+          </g>
+          <NodeSvg
+            v-else
+            :nodes="project.phy.root"
+            :selected="selected"
+            :variants="variants"
+            :cut="cut"
+            :dim="false"
+            @down="down"
+            @focus="onFocus"
+          />
+          <PhyMountLayer
+            v-if="showMounts"
+            :nodes="focus ? [node(focus)!] : project.phy.root"
+            :variants="variants"
+            :selections="stabilizerSelections(project)"
+            :zoom="zoom"
+            :parent="focus ? focusParentMatrix(focus) : undefined"
+          />
+          <PhySelectionLayer
+            :nodes="focus ? [node(focus)!] : project.phy.root"
+            :selected="selected"
+            :variants="variants"
+            :zoom="zoom"
+            :candidate="hold.open.value ? (hold.candidates.value[hold.index.value] ?? null) : null"
+            :parent="focus ? focusParentMatrix(focus) : undefined"
+          />
+          <PhyBadgeLayer
+            v-if="focus && outsideNodes.length"
+            :nodes="outsideNodes"
+            :variants="variants"
+            :zoom="zoom"
+            :dim="true"
+          />
+          <PhyBadgeLayer
+            :nodes="focus ? [node(focus)!] : project.phy.root"
+            :variants="variants"
+            :zoom="zoom"
+            :parent="focus ? focusParentMatrix(focus) : undefined"
+            @badge="openBadge"
+          />
+        </g>
+        <rect
+          v-if="rangeBox"
+          class="range-box"
+          :x="rangeBox.x"
+          :y="rangeBox.y"
+          :width="rangeBox.width"
+          :height="rangeBox.height"
+        />
+      </svg>
+      <div
+        v-if="confirm"
+        class="confirm-float"
+        :style="{ left: confirmPos.left + 'px', top: confirmPos.top + 'px' }"
+      >
+        <b>削除の確認</b>
+        <p>参照 {{ confirmRefs.length }}件</p>
+        <ul>
+          <li v-for="(r, i) in confirmRefs" :key="i">{{ r.layer }} · {{ r.id }} · {{ r.location }}</li>
+        </ul>
+        <button @click="deleteConfirmed">削除</button><button @click="confirm = null">取消</button>
+      </div>
+      <div
+        v-if="popover"
+        class="popover"
+        :style="{ left: popoverPos.left + 'px', top: popoverPos.top + 'px' }"
+      >
+        <template v-for="g in variantGroups.filter((n) => n.id === popover)" :key="g.id"
+          ><button v-for="v in g.children" :key="v.id" @click="chooseVariant(g, v.id)">
+            {{ v.name }}<span v-if="g.default === v.id" class="default-tag">既定</span>
+          </button></template
+        >
+      </div>
+      <div v-if="showHelp" class="overlay" @click.self="showHelp = false">
+        <article>
+          <button @click="showHelp = false">閉じる</button>
+          <h2>ショートカット</h2>
+          <p>Esc 選択解除・階層を戻る · Alt+↑/↓ 親・子 · Tab/Shift+Tab 兄弟 · Ctrl+A 同じ親を選択</p>
+          <p>矢印 移動 · Shift+矢印 サイズ · PgUp/PgDn 回転 · R/Shift+R キーの向き</p>
+          <p>
+            Ctrl+G クラスター · Ctrl+Shift+G 解除 · Ctrl+C/X/V コピー・カット・貼り付け · Ctrl+D 複製 · Ins
+            追加 · Delete 削除
+          </p>
+          <p>
+            Shift+1 全体表示 · Shift+2 選択表示 · +/- ズーム · G/Shift+G 刻み · V/Shift+V バリアント · Enter
+            フォーカス · F2 プロパティ
+          </p>
+          <p>Ctrl+Z/Y/S Undo・Redo・保存 · ? 一覧</p>
+          <p>
+            長押し: キー上で{{ HOLD_DELAY }}ms待つと選択先候補が{{
+              HOLD_INTERVAL
+            }}msごとに進み、離すと確定します。
+            ループ方式では、そのまま動かすと選んだ先をドラッグします。リスト方式では、リストに入ると巡回が止まり、指している行で離すと確定します。
+          </p>
+        </article>
+      </div>
+    </section>
+    <PhyProperties
+      :selected-count="selected.length"
+      :selected-id="selected[0] ?? null"
+      :item="prop ?? null"
+      :mismatch="mismatch"
+      @update="update"
+      @apply-frame="(id, frame) => dispatch('座標枠変更', (p) => ({ ...p, phy: reframe(p.phy, id, frame) }))"
+      @set-default="(groupId, variantId) => setDefault(groupId, variantId)"
+      @change-variant="chooseVariant"
+      @delete-node="(id) => askDelete(id)"
+      @add-variant="(groupId, name) => addVariantToGroup(groupId, name)"
+      :stabilizers="stabilizerChoice"
+      @stabilizers="(keyId, ids) => dispatch('スタビ位置', (p) => withStabilizers(p, keyId, ids))"
+    />
+  </section>
+</template>
+<style scoped>
+.workspace {
+  min-height: 0;
+  display: grid;
+  grid-template-columns: 260px minmax(300px, 1fr) 250px;
+  gap: 8px;
+}
+.workspace.tree-closed {
+  grid-template-columns: minmax(300px, 1fr) 250px;
+}
+.pane {
+  padding: 10px;
+  min-height: 0;
+  overflow: auto;
+  background: #fff;
+  border: 1px solid #cbd1da;
+  border-radius: 6px;
+}
+.canvas-pane {
+  display: flex;
+  flex-direction: column;
+  position: relative;
+  overflow: hidden;
+}
+.canvas {
+  width: 100%;
+  height: 100%;
+  min-height: 0;
+  flex: 1;
+  background: #fbfcfe;
+  touch-action: none;
+}
+.canvas path {
+  stroke: #e6eaf0;
+  stroke-width: 0.015;
+  fill: none;
+}
+.canvas path.major {
+  stroke: #ccd3de;
+  stroke-width: 0.03;
+}
+.range-box {
+  fill: #4b8de822;
+  stroke: #1769d2;
+  stroke-width: 1px;
+  vector-effect: non-scaling-stroke;
+  pointer-events: none;
+}
+.properties fieldset {
+  border: 0;
+  padding: 0;
+  margin: 0;
+  min-width: 0;
+}
+.properties label {
+  display: flex;
+  gap: 6px;
+  align-items: center;
+  margin: 8px 0;
+}
+.properties input {
+  width: 110px;
+  margin-left: auto;
+}
+.popover,
+.confirm-float,
+.overlay {
+  position: absolute;
+  z-index: 5;
+  background: #fff;
+  padding: 12px;
+  border: 1px solid #99a3b2;
+  box-shadow: 0 4px 15px #0003;
+}
+.confirm-float {
+  position: absolute;
+  z-index: 6;
+  width: min(380px, calc(100% - 16px));
+  max-height: min(240px, calc(100% - 16px));
+  overflow: auto;
+  font-size: 14px;
+  color: #20242a;
+}
+.confirm-float ul {
+  max-height: 120px;
+  overflow: auto;
+  padding-left: 22px;
+}
+.overlay {
+  inset: 20%;
+}
+.tree-list {
+  list-style: none;
+  padding-left: 10px;
+}
+.confirm-float rect {
+  fill: #fff2dc;
+  stroke: #db9d39;
+}
+.confirm-float foreignObject div {
+  font: 1.5px sans-serif;
+}
+.confirm-float ul {
+  max-height: 1px;
+  overflow: auto;
+}
+.workspace.locked .properties {
+  pointer-events: none;
+  opacity: 0.55;
+}
+.warning {
+  color: #9a4c00;
+}
+.default-tag {
+  margin-left: 6px;
+  padding: 0 4px;
+  border: 1px solid #8a691b;
+  border-radius: 3px;
+  font-size: 11px;
+  color: #6b520f;
+}
+</style>

mock/src/ui/phy/PhyHoldOverlay.vue

@@ -0,0 +1,103 @@
+<script setup lang="ts">
+import { HOLD_INTERVAL, type HoldMode } from "./usePhyLongPress";
+defineProps<{
+  mode: HoldMode;
+  pos: { x: number; y: number };
+  names: string[];
+  index: number;
+  step: number;
+  pointing: boolean;
+}>();
+// 円の周長。インジケータは次の切り替えまでに一周する
+const ring = 2 * Math.PI * 14;
+</script>
+
+<template>
+  <svg
+    v-if="!pointing"
+    :key="step"
+    class="hold-ring"
+    width="36"
+    height="36"
+    :style="{ left: pos.x - 18 + 'px', top: pos.y - 18 + 'px' }"
+  >
+    <circle cx="18" cy="18" r="14" class="track" />
+    <circle
+      cx="18"
+      cy="18"
+      r="14"
+      class="progress"
+      :stroke-dasharray="ring"
+      :style="{ '--ring': ring, animationDuration: HOLD_INTERVAL + 'ms' }"
+    />
+  </svg>
+  <ol
+    class="hold-list"
+    :class="mode"
+    :data-hold-mode="mode"
+    :style="{ left: pos.x + 22 + 'px', top: pos.y + 10 + 'px' }"
+  >
+    <li
+      v-for="(name, i) in names"
+      :key="i"
+      class="hold-row"
+      :class="{ active: i === index }"
+      :data-hold-index="i"
+    >
+      {{ name }}
+    </li>
+  </ol>
+</template>
+
+<style scoped>
+.hold-ring {
+  position: fixed;
+  z-index: 3;
+  pointer-events: none;
+}
+.track,
+.progress {
+  fill: none;
+  stroke-width: 3;
+}
+.track {
+  stroke: rgb(200 125 19 / 25%);
+}
+.progress {
+  stroke: #c87d13;
+  transform: rotate(-90deg);
+  transform-origin: 18px 18px;
+  animation: hold-ring linear forwards;
+}
+@keyframes hold-ring {
+  from {
+    stroke-dashoffset: var(--ring);
+  }
+  to {
+    stroke-dashoffset: 0;
+  }
+}
+.hold-list {
+  position: fixed;
+  z-index: 3;
+  margin: 0;
+  padding: 3px 0;
+  list-style: none;
+  background: #fff3d8;
+  border: 1px solid #c87d13;
+  border-radius: 4px;
+  font-size: 13px;
+  user-select: none;
+}
+.hold-list.loop {
+  pointer-events: none;
+}
+.hold-row {
+  padding: 3px 10px;
+  white-space: nowrap;
+}
+.hold-row.active {
+  background: #c87d13;
+  color: #fff;
+}
+</style>

mock/src/ui/phy/PhyMountLayer.vue

@@ -0,0 +1,44 @@
+<script setup lang="ts">
+import { computed } from "vue";
+import type { Node } from "../../domain/phy";
+import type { Affine } from "../../domain/geometry";
+import { mountMarks, type StabilizerSelections } from "./logic";
+const props = withDefaults(
+  defineProps<{
+    nodes: Node[];
+    variants: Record<string, string>;
+    selections: StabilizerSelections;
+    zoom: number;
+    parent?: Affine;
+  }>(),
+  { parent: () => ({ a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 }) },
+);
+const marks = computed(() => mountMarks(props.nodes, props.variants, props.selections, props.parent));
+// 十字の大きさは画面上で固定する。
+const cross = (p: { x: number; y: number }) => {
+  const r = 6 / props.zoom;
+  return `M ${p.x - r} ${p.y} H ${p.x + r} M ${p.x} ${p.y - r} V ${p.y + r}`;
+};
+const affineText = (m: Affine) => `matrix(${m.a} ${m.b} ${m.c} ${m.d} ${m.e} ${m.f})`;
+</script>
+<template>
+  <g class="mount-layer" pointer-events="none">
+    <g v-for="mark in marks" :key="mark.id" :data-mount-id="mark.id" :transform="affineText(mark.transform)">
+      <path class="switch" :d="cross(mark.switchAt)" />
+      <path v-for="(p, i) in mark.stabs" :key="i" class="stab" :d="cross(p)" />
+    </g>
+  </g>
+</template>
+<style scoped>
+path {
+  fill: none;
+  stroke-width: 2px;
+  vector-effect: non-scaling-stroke;
+}
+.switch {
+  stroke: #c2185b;
+}
+.stab {
+  stroke: #00897b;
+}
+</style>

mock/src/ui/phy/PhyProperties.vue

@@ -0,0 +1,290 @@
+<script setup lang="ts">
+import { computed, ref } from "vue";
+import type { Node, Transform } from "../../domain/phy";
+import type { StabilizerCandidate } from "../../domain/stabilizers";
+import { hasSecondRect } from "../../domain/keyShape";
+const props = defineProps<{
+  selectedCount: number;
+  selectedId: string | null;
+  item: Node | null;
+  mismatch: boolean;
+  stabilizers: { candidates: StabilizerCandidate[]; selected: string[] } | null;
+}>();
+const emit = defineEmits<{
+  update: [id: string, change: (node: Node) => void, label?: string];
+  applyFrame: [id: string, frame: Transform];
+  setDefault: [groupId: string, variantId: string];
+  changeVariant: [group: Node, variantId: string];
+  deleteNode: [id: string];
+  addVariant: [groupId: string, name: string];
+  stabilizers: [keyId: string, ids: string[]];
+}>();
+function setSwitchOffset(axis: "x" | "y", value: number) {
+  emit("update", props.item!.id, (n) => {
+    if (n.type !== "key") return;
+    const offset = { x: n.switchOffset?.x ?? 0, y: n.switchOffset?.y ?? 0, [axis]: value };
+    if (offset.x === 0 && offset.y === 0) delete n.switchOffset;
+    else n.switchOffset = offset;
+  });
+}
+// 異形キーは2つ目の矩形(x2, y2, w2, h2)を持つ。オンにしたときはKLEの既定(0, 0, w, h)から始める。T-32。
+const irregular = computed(() => props.item?.type === "key" && hasSecondRect(props.item.size));
+function setIrregular(on: boolean) {
+  emit("update", props.item!.id, (n) => {
+    if (n.type !== "key") return;
+    if (on) n.size = { ...n.size, x2: 0, y2: 0, w2: n.size.w, h2: n.size.h };
+    else n.size = { w: n.size.w, h: n.size.h };
+  });
+}
+function setSecondRect(field: "x2" | "y2" | "w2" | "h2", value: number) {
+  emit("update", props.item!.id, (n) => {
+    if (n.type === "key") n.size[field] = value;
+  });
+}
+function toggleStabilizer(id: string, on: boolean) {
+  const current = props.stabilizers?.selected ?? [];
+  emit(
+    "stabilizers",
+    props.item!.id,
+    on ? [...current.filter((x) => x !== id), id] : current.filter((x) => x !== id),
+  );
+}
+const group = computed(() => (props.item?.type === "variantGroup" ? props.item : null));
+const frameX = ref(0);
+const frameY = ref(0);
+const frameR = ref(0);
+</script>
+
+<template>
+  <aside class="properties pane">
+    <fieldset :disabled="mismatch">
+      <p v-if="selectedCount > 1">{{ selectedCount }}件を選択中</p>
+      <template v-else-if="item">
+        <h2>{{ item.type }}</h2>
+        <label
+          >X
+          <input
+            type="number"
+            step="any"
+            :value="item.transform.x"
+            @change="
+              emit(
+                'update',
+                item.id,
+                (n) => (n.transform.x = Number(($event.target as HTMLInputElement).value)),
+              )
+            "
+        /></label>
+        <label
+          >Y
+          <input
+            type="number"
+            step="any"
+            :value="item.transform.y"
+            @change="
+              emit(
+                'update',
+                item.id,
+                (n) => (n.transform.y = Number(($event.target as HTMLInputElement).value)),
+              )
+            "
+        /></label>
+        <label
+          >Rotation
+          <input
+            type="number"
+            step="any"
+            :value="item.transform.rotation"
+            @change="
+              emit(
+                'update',
+                item.id,
+                (n) => (n.transform.rotation = Number(($event.target as HTMLInputElement).value)),
+              )
+            "
+        /></label>
+        <template v-if="item.type === 'key'">
+          <label
+            >Width
+            <input
+              type="number"
+              step="any"
+              :value="item.size.w"
+              @change="
+                emit('update', item.id, (n) => {
+                  if (n.type === 'key') n.size.w = Number(($event.target as HTMLInputElement).value);
+                })
+              "
+          /></label>
+          <label
+            >Height
+            <input
+              type="number"
+              step="any"
+              :value="item.size.h"
+              @change="
+                emit('update', item.id, (n) => {
+                  if (n.type === 'key') n.size.h = Number(($event.target as HTMLInputElement).value);
+                })
+              "
+          /></label>
+          <label class="check"
+            ><input
+              type="checkbox"
+              :checked="irregular"
+              @change="setIrregular(($event.target as HTMLInputElement).checked)"
+            />異形キー</label
+          >
+          <template v-if="irregular && item.type === 'key'">
+            <label
+              >X2
+              <input
+                type="number"
+                step="any"
+                :value="item.size.x2 ?? 0"
+                @change="setSecondRect('x2', Number(($event.target as HTMLInputElement).value))"
+            /></label>
+            <label
+              >Y2
+              <input
+                type="number"
+                step="any"
+                :value="item.size.y2 ?? 0"
+                @change="setSecondRect('y2', Number(($event.target as HTMLInputElement).value))"
+            /></label>
+            <label
+              >Width2
+              <input
+                type="number"
+                step="any"
+                :value="item.size.w2 ?? item.size.w"
+                @change="setSecondRect('w2', Number(($event.target as HTMLInputElement).value))"
+            /></label>
+            <label
+              >Height2
+              <input
+                type="number"
+                step="any"
+                :value="item.size.h2 ?? item.size.h"
+                @change="setSecondRect('h2', Number(($event.target as HTMLInputElement).value))"
+            /></label>
+          </template>
+          <label
+            >switchOffset X
+            <input
+              type="number"
+              step="any"
+              :value="item.switchOffset?.x ?? 0"
+              @change="setSwitchOffset('x', Number(($event.target as HTMLInputElement).value))"
+          /></label>
+          <label
+            >switchOffset Y
+            <input
+              type="number"
+              step="any"
+              :value="item.switchOffset?.y ?? 0"
+              @change="setSwitchOffset('y', Number(($event.target as HTMLInputElement).value))"
+          /></label>
+          <div class="stabilizers">
+            スタビ
+            <span v-if="!stabilizers?.candidates.length" class="none">候補なし</span>
+            <label v-for="c in stabilizers?.candidates ?? []" :key="c.id" class="check"
+              ><input
+                type="checkbox"
+                :checked="stabilizers!.selected.includes(c.id)"
+                @change="toggleStabilizer(c.id, ($event.target as HTMLInputElement).checked)"
+              />{{ c.label }}</label
+            >
+          </div>
+          <label
+            >Label
+            <input
+              :value="item.labels?.[0]"
+              @change="
+                emit('update', item.id, (n) => {
+                  if (n.type === 'key') n.labels = [($event.target as HTMLInputElement).value];
+                })
+              "
+          /></label>
+        </template>
+        <template v-if="item.type === 'cluster'">
+          <label
+            >名前
+            <input
+              :value="item.name"
+              @change="
+                emit('update', item.id, (n) => {
+                  if (n.type === 'cluster') n.name = ($event.target as HTMLInputElement).value;
+                })
+              "
+          /></label>
+          <h3>座標枠変更</h3>
+          <label>原点X <input type="number" v-model.number="frameX" /></label>
+          <label>原点Y <input type="number" v-model.number="frameY" /></label>
+          <label>角度 <input type="number" v-model.number="frameR" /></label>
+          <button @click="emit('applyFrame', item.id, { x: frameX, y: frameY, rotation: frameR })">
+            適用
+          </button>
+        </template>
+        <template v-if="group">
+          <label
+            >名前
+            <input
+              :value="group.name"
+              @change="
+                emit('update', group.id, (n) => {
+                  if (n.type === 'variantGroup') n.name = ($event.target as HTMLInputElement).value;
+                })
+              "
+          /></label>
+          <div v-for="v in group.children" :key="v.id">
+            {{ v.name }} {{ v.id === group.default ? "✓" : "" }}
+            <button @click="emit('setDefault', group.id, v.id)">既定</button>
+            <button @click="emit('changeVariant', group, v.id)">表示</button>
+            <button :disabled="group.children.length <= 2" @click="emit('deleteNode', v.id)">削除</button>
+          </div>
+          <button @click="emit('addVariant', group.id, 'Option ' + (group.children.length + 1))">追加</button>
+        </template>
+      </template>
+      <p v-else-if="selectedCount === 0">ノードを選択してください</p>
+    </fieldset>
+  </aside>
+</template>
+
+<style scoped>
+.pane {
+  padding: 10px;
+  min-height: 0;
+  overflow: auto;
+  background: #fff;
+  border: 1px solid #cbd1da;
+  border-radius: 6px;
+}
+.properties fieldset {
+  border: 0;
+  padding: 0;
+  margin: 0;
+  min-width: 0;
+}
+.properties label {
+  display: flex;
+  gap: 6px;
+  align-items: center;
+  margin: 8px 0;
+}
+.properties input {
+  width: 110px;
+  margin-left: auto;
+}
+.properties label.check {
+  margin: 4px 0 4px 12px;
+}
+.properties label.check input {
+  width: auto;
+  margin-left: 0;
+}
+.stabilizers .none {
+  margin-left: 8px;
+  color: #6b7380;
+}
+</style>

mock/src/ui/phy/PhySelectionLayer.vue

@@ -0,0 +1,77 @@
+<script setup lang="ts">
+import { computed } from "vue";
+import type { Node } from "../../domain/phy";
+import type { Affine } from "../../domain/geometry";
+import { selectionFrames } from "./logic";
+const props = withDefaults(
+  defineProps<{
+    nodes: Node[];
+    selected: string[];
+    variants: Record<string, string>;
+    zoom: number;
+    candidate?: string | null;
+    parent?: Affine;
+  }>(),
+  { candidate: null, parent: () => ({ a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 }) },
+);
+const frames = computed(() =>
+  selectionFrames(props.nodes, props.selected, props.variants, props.candidate, props.parent),
+);
+// 原点の丸は選択中のクラスター(VariantGroupを含む)にだけ出す。T-30。
+const origins = computed(() => frames.value.filter((frame) => frame.selected && frame.type !== "key"));
+const affineText = (m: Affine) => `matrix(${m.a} ${m.b} ${m.c} ${m.d} ${m.e} ${m.f})`;
+</script>
+<template>
+  <g class="selection-layer" pointer-events="none">
+    <template v-for="frame in frames" :key="frame.id">
+      <path
+        v-if="frame.path"
+        :data-sel-id="frame.id"
+        :class="['sel', { candidate: frame.candidate }]"
+        :transform="affineText(frame.transform)"
+        :d="frame.path"
+      />
+      <rect
+        v-else
+        :data-sel-id="frame.id"
+        :class="[frame.type === 'key' ? 'sel' : 'group-sel', { candidate: frame.candidate }]"
+        :transform="affineText(frame.transform)"
+        :x="frame.box.x"
+        :y="frame.box.y"
+        :width="frame.box.width"
+        :height="frame.box.height"
+      />
+    </template>
+    <circle
+      v-for="frame in origins"
+      :key="`origin-${frame.id}`"
+      :data-origin-id="frame.id"
+      class="origin"
+      :cx="frame.transform.e"
+      :cy="frame.transform.f"
+      :r="5 / zoom"
+    />
+  </g>
+</template>
+<style scoped>
+.sel,
+.group-sel {
+  fill: none;
+  stroke: #1769d2;
+  stroke-width: 3.5px;
+  vector-effect: non-scaling-stroke;
+}
+.group-sel {
+  stroke-dasharray: 5 3;
+}
+.candidate {
+  stroke: #e87912;
+  stroke-width: 3.5px;
+}
+.origin {
+  fill: #fff;
+  stroke: #1769d2;
+  stroke-width: 2px;
+  vector-effect: non-scaling-stroke;
+}
+</style>

mock/src/ui/phy/PhyToolbar.vue

@@ -0,0 +1,158 @@
+<script setup lang="ts">
+import { IRREGULAR_KEY_PRESETS } from "../../domain/keyShape";
+defineProps<{
+  mismatch: boolean;
+  selectedCount: number;
+  grid: number;
+  moveTargets: { id: string; label: string }[];
+  focus: string | null;
+  crumbs: { id: string | null; label: string }[];
+  holdMode: "loop" | "list";
+  showMounts: boolean;
+}>();
+const emit = defineEmits<{
+  keyAdd: [];
+  presetAdd: [presetId: string];
+  partAdd: [group: string];
+  cluster: [];
+  ungroup: [];
+  variantGroup: [];
+  moveTo: [id: string];
+  duplicate: [];
+  delete: [event: MouseEvent];
+  grid: [];
+  fit: [];
+  fitSelected: [];
+  zoom: [direction: 1 | -1];
+  tree: [];
+  help: [];
+  focus: [id: string | null];
+  holdMode: [];
+  mounts: [];
+}>();
+function addPreset(e: Event) {
+  const select = e.target as HTMLSelectElement;
+  emit("presetAdd", select.value);
+  select.value = "";
+}
+function addPart(e: Event) {
+  const select = e.target as HTMLSelectElement;
+  emit("partAdd", select.value);
+  select.value = "";
+}
+</script>
+
+<template>
+  <div class="tools">
+    <button title="キーを足す" aria-label="キーを足す" :disabled="mismatch" @click="emit('keyAdd')">
+      ＋⌨
+    </button>
+    <select aria-label="異形キーを足す" :disabled="mismatch" @change="addPreset">
+      <option value="">異形キーを足す</option>
+      <option v-for="preset in IRREGULAR_KEY_PRESETS" :key="preset.id" :value="preset.id">
+        {{ preset.label }}
+      </option>
+    </select>
+    <select aria-label="部品を足す" :disabled="mismatch" @change="addPart">
+      <option value="">部品を足す</option>
+      <option>@led</option>
+      <option>@encoder</option>
+      <option>@screw</option>
+      <option>@oled</option>
+      <option>その他</option>
+    </select>
+    <button
+      title="クラスターにする"
+      aria-label="クラスターにする"
+      :disabled="mismatch || !selectedCount"
+      @click="emit('cluster')"
+    >
+      ▱
+    </button>
+    <button
+      title="クラスターを解除"
+      aria-label="クラスターを解除"
+      :disabled="mismatch"
+      @click="emit('ungroup')"
+    >
+      ⊟
+    </button>
+    <button
+      title="選択からバリアントグループ"
+      aria-label="選択からバリアントグループ"
+      :disabled="mismatch || !selectedCount"
+      @click="emit('variantGroup')"
+    >
+      ◇
+    </button>
+    <select
+      class="move-to"
+      aria-label="移し先…"
+      :disabled="mismatch || !selectedCount"
+      @change="emit('moveTo', ($event.target as HTMLSelectElement).value)"
+    >
+      <option value="">移し先…</option>
+      <option v-for="target in moveTargets" :key="target.id" :value="target.id">{{ target.label }}</option>
+    </select>
+    <button title="複製" aria-label="複製" :disabled="mismatch || !selectedCount" @click="emit('duplicate')">
+      ⧉
+    </button>
+    <button
+      title="削除"
+      aria-label="削除"
+      :disabled="mismatch || !selectedCount"
+      @click="emit('delete', $event)"
+    >
+      ⌫
+    </button>
+    <button @click="emit('grid')">Grid {{ grid }}U</button>
+    <button title="全体表示" aria-label="全体表示" @click="emit('fit')">⛶</button>
+    <button title="選択範囲にズーム" aria-label="選択範囲にズーム" @click="emit('fitSelected')">⌕</button>
+    <button title="ズームイン" aria-label="ズームイン" @click="emit('zoom', 1)">＋</button>
+    <button title="ズームアウト" aria-label="ズームアウト" @click="emit('zoom', -1)">−</button>
+    <button title="階層" aria-label="階層" @click="emit('tree')">☷</button>
+    <button
+      :title="`長押しの方式: ${holdMode === 'loop' ? 'ループ' : 'リスト'}(押すと切り替え)`"
+      :aria-label="`長押し: ${holdMode === 'loop' ? 'ループ' : 'リスト'}`"
+      @click="emit('holdMode')"
+    >
+      {{ holdMode === "loop" ? "⟳" : "☰" }}
+    </button>
+    <button
+      title="スイッチ・スタビライザーの位置"
+      aria-label="スイッチ・スタビライザーの位置"
+      :aria-pressed="showMounts"
+      :class="{ on: showMounts }"
+      @click="emit('mounts')"
+    >
+      ✛
+    </button>
+    <button title="ショートカット一覧" aria-label="ショートカット一覧" @click="emit('help')">?</button>
+    <span v-if="focus">
+      <template v-for="(crumb, i) in crumbs" :key="i">
+        <button @click="emit('focus', crumb.id)">{{ i ? " › " : "" }}{{ crumb.label }}</button>
+      </template>
+    </span>
+  </div>
+</template>
+
+<style scoped>
+.tools {
+  display: flex;
+  gap: 4px;
+  flex-wrap: wrap;
+  align-items: center;
+}
+.tools button,
+.tools select {
+  font-size: 12px;
+}
+.tools button.on {
+  background: #dbe8fb;
+  border-color: #1769d2;
+}
+/* 候補の名前でセレクトの幅が変わると、ツールバーが折り返してキャンバスの大きさが変わる */
+.tools select.move-to {
+  width: 6em;
+}
+</style>

mock/src/ui/phy/PhyTree.vue

@@ -0,0 +1,114 @@
+<script setup lang="ts">
+import { computed } from "vue";
+import type { Node } from "../../domain/phy";
+defineOptions({ name: "PhyTree" });
+const props = defineProps<{ nodes: Node[]; selected: string[] }>();
+const emit = defineEmits<{ select: [id: string, add: boolean] }>();
+const structures = computed(() =>
+  props.nodes.filter((n) => n.type === "cluster" || n.type === "variantGroup"),
+);
+const leaves = computed(() => props.nodes.filter((n) => n.type === "key" || n.type === "component"));
+function countLeaves(nodes: Node[]): number {
+  return nodes.reduce(
+    (count, n) =>
+      count +
+      (n.type === "key" || n.type === "component"
+        ? 1
+        : n.type === "cluster"
+          ? countLeaves(n.children)
+          : n.type === "variantGroup"
+            ? n.children.reduce((sum, v) => sum + countLeaves(v.children), 0)
+            : 0),
+    0,
+  );
+}
+</script>
+<template>
+  <ul class="tree-list">
+    <li v-for="n in structures" :key="n.id">
+      <button
+        class="tree-node"
+        :data-tree-id="n.id"
+        :class="{ chosen: selected.includes(n.id) }"
+        @click="emit('select', n.id, $event.shiftKey)"
+      >
+        {{ n.type === "cluster" ? "クラスター" : n.name }}
+        <small>{{ n.type === "cluster" ? `${countLeaves(n.children)}件` : `${n.children.length}件` }}</small>
+      </button>
+      <PhyTree
+        v-if="n.type === 'cluster'"
+        :nodes="n.children"
+        :selected="selected"
+        @select="(id, add) => emit('select', id, add)"
+      />
+      <div v-else class="variants">
+        <div v-for="v in n.children" :key="v.id">
+          <button
+            class="tree-node variant"
+            :data-tree-id="n.id"
+            :class="{ chosen: selected.includes(n.id) }"
+            @click="emit('select', n.id, $event.shiftKey)"
+          >
+            {{ v.name }}
+            <small>{{ n.default === v.id ? "既定 · " : "" }}{{ countLeaves(v.children) }}件</small>
+          </button>
+          <details>
+            <summary>キー・部品 {{ countLeaves(v.children) }}件</summary>
+            <PhyTree
+              :nodes="v.children"
+              :selected="selected"
+              @select="(id, add) => emit('select', id, add)"
+            />
+          </details>
+        </div>
+      </div>
+    </li>
+    <li v-if="leaves.length">
+      <details>
+        <summary>キー・部品 {{ leaves.length }}件</summary>
+        <ul class="tree-list">
+          <li v-for="n in leaves" :key="n.id">
+            <button
+              class="tree-node leaf"
+              :data-tree-id="n.id"
+              :class="{ chosen: selected.includes(n.id) }"
+              @click="emit('select', n.id, $event.shiftKey)"
+            >
+              {{ n.type === "key" ? "キー" : "部品" }}
+              <small>{{ n.type === "key" ? n.labels?.find(Boolean) : n.partGroup }}</small>
+            </button>
+          </li>
+        </ul>
+      </details>
+    </li>
+  </ul>
+</template>
+<style scoped>
+.tree-list {
+  list-style: none;
+  padding-left: 12px;
+  margin: 3px 0;
+}
+.tree-node {
+  width: 100%;
+  text-align: left;
+  border: 0;
+  background: transparent;
+  padding: 4px;
+  white-space: nowrap;
+}
+.leaf {
+  font-size: 12px;
+}
+.chosen {
+  background: #dce9ff;
+}
+summary {
+  font-size: 11px;
+  color: #667;
+  cursor: pointer;
+}
+.variants {
+  padding-left: 4px;
+}
+</style>

mock/src/ui/phy/logic.ts

@@ -0,0 +1,377 @@
+import type { KeyNode, Node, PhyFile, Transform } from "../../domain/phy";
+import type { ProjectFile } from "../../domain/project";
+import { stabilizerCandidates, stabilizerPoints, switchPoint } from "../../domain/stabilizers";
+import { apply, compose, inverse, matrix, type Affine } from "../../domain/geometry";
+import { hasSecondRect, keyCorners, keyOutline } from "../../domain/keyShape";
+
+export function normalizeSelection(file: PhyFile, ids: string[]): string[] {
+  const parent = new Map<string, string | null>(),
+    nodes = new Map<string, Node>();
+  const walk = (items: Node[], p: string | null) =>
+    items.forEach((n) => {
+      parent.set(n.id, p);
+      nodes.set(n.id, n);
+      if (n.type === "cluster") walk(n.children, n.id);
+      if (n.type === "variantGroup")
+        n.children.forEach((v) => {
+          parent.set(v.id, n.id);
+          walk(v.children, v.id);
+        });
+    });
+  walk(file.root, null);
+  const out: string[] = [];
+  for (const id of ids) {
+    if (!nodes.has(id) || out.includes(id)) continue;
+    const ancestors = new Set<string>();
+    let p = parent.get(id) ?? null;
+    while (p) {
+      ancestors.add(p);
+      p = parent.get(p) ?? null;
+    }
+    const keep = out.filter((x) => !ancestors.has(x) && !isDescendant(parent, x, id));
+    out.splice(0, out.length, ...keep, id);
+  }
+  return out;
+}
+function isDescendant(parent: Map<string, string | null>, candidate: string, ancestor: string): boolean {
+  let p = parent.get(candidate) ?? null;
+  while (p) {
+    if (p === ancestor) return true;
+    p = parent.get(p) ?? null;
+  }
+  return false;
+}
+export function longPressColumn(keyId: string, ancestorsNearestFirst: string[], focusId?: string): string[] {
+  const list = [keyId, ...ancestorsNearestFirst];
+  if (focusId) {
+    const i = list.indexOf(focusId);
+    if (i >= 0) list.splice(i);
+  }
+  return list;
+}
+export function tabOrder<T extends { id: string; x: number; y: number }>(items: T[]): T[] {
+  const sorted = [...items].sort((a, b) => a.y - b.y),
+    rows: T[][] = [];
+  for (const item of sorted) {
+    const row = rows.at(-1);
+    if (!row || item.y - row[0]!.y >= 0.5) rows.push([item]);
+    else row.push(item);
+  }
+  return rows.flatMap((row) => row.sort((a, b) => a.x - b.x));
+}
+
+/** 1つの走査結果からノードの親と挿入先の器を引けるようにする。 */
+export function treeIndex(roots: Node[]) {
+  const nodes = new Map<string, Node>();
+  const parents = new Map<string, string | null>();
+  const containers = new Map<string, string | null>();
+  const variants = new Map<string, string>();
+  const visit = (items: Node[], parent: string | null, container: string | null) => {
+    for (const n of items) {
+      nodes.set(n.id, n);
+      parents.set(n.id, parent);
+      containers.set(n.id, container);
+      if (n.type === "cluster") visit(n.children, n.id, n.id);
+      if (n.type === "variantGroup") {
+        for (const v of n.children) {
+          variants.set(v.id, n.id);
+          visit(v.children, n.id, v.id);
+        }
+      }
+    }
+  };
+  visit(roots, null, null);
+  return {
+    nodes,
+    parents,
+    containers,
+    variants,
+    selectableParent(id: string) {
+      return parents.get(id) ?? null;
+    },
+    insertionContainer(id: string) {
+      return containers.get(id) ?? null;
+    },
+    groupForVariant(id: string) {
+      return variants.get(id) ?? null;
+    },
+  };
+}
+
+export function treeNodes(roots: Node[]): Node[] {
+  return [...treeIndex(roots).nodes.values()];
+}
+
+export function structuralNodes(roots: Node[]): Extract<Node, { type: "cluster" | "variantGroup" }>[] {
+  return treeNodes(roots).filter(
+    (node): node is Extract<Node, { type: "cluster" | "variantGroup" }> =>
+      node.type === "cluster" || node.type === "variantGroup",
+  );
+}
+
+export function removeFocusedSubtree(nodes: Node[], focusedId: string): Node[] {
+  const result: Node[] = [];
+  for (const node of nodes) {
+    if (node.id === focusedId) continue;
+    if (node.type === "cluster") {
+      const children = removeFocusedSubtree(node.children, focusedId);
+      result.push({ ...node, children });
+    } else if (node.type === "variantGroup") {
+      result.push({
+        ...node,
+        children: node.children.map((variant) => ({
+          ...variant,
+          children: removeFocusedSubtree(variant.children, focusedId),
+        })),
+      });
+    } else {
+      result.push(node);
+    }
+  }
+  return result;
+}
+
+export function visibleNodeIds(root: Node | undefined, shownVariants: Record<string, string>): Set<string> {
+  const result = new Set<string>();
+  const visit = (node: Node) => {
+    result.add(node.id);
+    if (node.type === "cluster") node.children.forEach(visit);
+    if (node.type === "variantGroup") {
+      const variant = node.children.find((item) => item.id === (shownVariants[node.id] ?? node.default));
+      variant?.children.forEach(visit);
+    }
+  };
+  if (root) visit(root);
+  return result;
+}
+
+export function selectableParent(roots: Node[], id: string): string | null {
+  return treeIndex(roots).selectableParent(id);
+}
+
+export function insertionContainer(
+  roots: Node[],
+  parentId: string | null,
+  shownVariants: Record<string, string> = {},
+): string | null {
+  if (parentId === null) return null;
+  const index = treeIndex(roots);
+  const node = index.nodes.get(parentId);
+  if (node?.type === "cluster") return node.id;
+  if (node?.type === "variantGroup") return shownVariants[node.id] ?? node.default;
+  return index.variants.get(parentId) === undefined ? null : parentId;
+}
+export function snap(value: number, step: number): number {
+  return Math.round(value / step) * step;
+}
+export const GRID_STEPS = [1, 0.25, 0.125, 1 / 12] as const;
+export function nextGrid(step: number, direction: 1 | -1): number {
+  const i = GRID_STEPS.findIndex((x) => Math.abs(x - step) < 1e-9);
+  return GRID_STEPS[(i + direction + GRID_STEPS.length) % GRID_STEPS.length]!;
+}
+export function resolveKey(
+  e: Pick<KeyboardEvent, "key" | "code" | "ctrlKey" | "metaKey" | "shiftKey" | "altKey">,
+): string | null {
+  const mod = e.ctrlKey || e.metaKey;
+  if (e.code === "Digit1" && e.shiftKey) return "fit";
+  if (e.code === "Digit2" && e.shiftKey) return "selection-fit";
+  if (mod && e.key.toLowerCase() === "z") return e.shiftKey ? "redo" : "undo";
+  if (mod && e.key.toLowerCase() === "y") return "redo";
+  if (mod && e.key.toLowerCase() === "s") return "save";
+  if (mod && e.key.toLowerCase() === "g") return e.shiftKey ? "ungroup" : "group";
+  if (mod && ["a", "c", "x", "v", "d"].includes(e.key.toLowerCase())) return e.key.toLowerCase();
+  return e.key;
+}
+export type Box = { x: number; y: number; width: number; height: number };
+export function obbAabb(points: { x: number; y: number }[]): Box {
+  if (!points.length) return { x: 0, y: 0, width: 0, height: 0 };
+  const xs = points.map((p) => p.x),
+    ys = points.map((p) => p.y),
+    x = Math.min(...xs),
+    y = Math.min(...ys);
+  return { x, y, width: Math.max(...xs) - x, height: Math.max(...ys) - y };
+}
+export function pasteParent(selectedParents: (string | null)[], focus: string | null): string | null {
+  return selectedParents.length ? selectedParents[0]! : focus;
+}
+/** 子のローカル形状を親座標でまとめる。回転親に追従する選択枠用。 */
+export function localBounds(nodes: Node[], variants: Record<string, string> = {}): Box {
+  const points: { x: number; y: number }[] = [];
+  const visit = (items: Node[], parent: Affine) =>
+    items.forEach((n) => {
+      const w = compose(parent, matrix(n.transform));
+      if (n.type === "key") {
+        points.push(...keyCorners(n.size).map((p) => apply(w, p)));
+      } else if (n.type === "component") {
+        const c = apply(w, { x: 0, y: 0 });
+        points.push({ x: c.x - 0.16, y: c.y - 0.16 }, { x: c.x + 0.16, y: c.y + 0.16 });
+      } else if (n.type === "cluster") visit(n.children, w);
+      else {
+        const v = n.children.find((x) => x.id === (variants[n.id] ?? n.default));
+        if (v) visit(v.children, w);
+      }
+    });
+  visit(nodes, { a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 });
+  return obbAabb(points);
+}
+
+/** SVG path of a non-rectangular key's outline; undefined for plain keys, which are drawn as rounded rects. */
+export function keyPath(size: KeyNode["size"]): string | undefined {
+  if (!hasSecondRect(size)) return undefined;
+  return keyOutline(size)
+    .map((loop) => `M ${loop.map((p) => `${p.x} ${p.y}`).join(" L ")} Z`)
+    .join(" ");
+}
+
+export type SelectionFrame = {
+  id: string;
+  type: Node["type"];
+  transform: Affine;
+  box: Box;
+  /** Outline of a non-rectangular key, drawn instead of `box`. */
+  path?: string;
+  selected: boolean;
+  candidate: boolean;
+};
+/** 可視ノードの選択枠をワールド行列とローカル矩形で返す。 */
+export function selectionFrames(
+  roots: Node[],
+  selected: string[],
+  variants: Record<string, string>,
+  candidate: string | null,
+  parent: Affine = { a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 },
+): SelectionFrame[] {
+  const frames: SelectionFrame[] = [];
+  const visit = (nodes: Node[], ancestor: Affine) => {
+    for (const node of nodes) {
+      const transform = compose(ancestor, matrix(node.transform));
+      if (node.type === "key" && (selected.includes(node.id) || candidate === node.id)) {
+        frames.push({
+          id: node.id,
+          type: node.type,
+          transform,
+          box: { x: 0, y: 0, width: node.size.w, height: node.size.h },
+          path: keyPath(node.size),
+          selected: selected.includes(node.id),
+          candidate: candidate === node.id,
+        });
+      } else if (node.type === "cluster") {
+        if (selected.includes(node.id) || candidate === node.id)
+          frames.push({
+            id: node.id,
+            type: node.type,
+            transform,
+            box: localBounds(node.children, variants),
+            selected: selected.includes(node.id),
+            candidate: candidate === node.id,
+          });
+        visit(node.children, transform);
+      } else if (node.type === "variantGroup") {
+        const variant = node.children.find((item) => item.id === (variants[node.id] ?? node.default));
+        if (selected.includes(node.id) || candidate === node.id)
+          frames.push({
+            id: node.id,
+            type: node.type,
+            transform,
+            box: localBounds(variant?.children ?? [], variants),
+            selected: selected.includes(node.id),
+            candidate: candidate === node.id,
+          });
+        if (variant) visit(variant.children, transform);
+      }
+    }
+  };
+  visit(roots, parent);
+  return frames;
+}
+export type VariantBadge = {
+  group: Extract<Node, { type: "variantGroup" }>;
+  x: number;
+  y: number;
+  size: number;
+};
+/** 表示中のVariantGroupのバッジを、OBBの右上に正立で置く。大きさは画面上で固定する。 */
+export function variantBadges(
+  roots: Node[],
+  variants: Record<string, string>,
+  zoom: number,
+  parent: Affine = { a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 },
+): VariantBadge[] {
+  const badges: VariantBadge[] = [];
+  const size = 20 / zoom;
+  const visit = (nodes: Node[], ancestor: Affine) => {
+    for (const node of nodes) {
+      const transform = compose(ancestor, matrix(node.transform));
+      if (node.type === "cluster") visit(node.children, transform);
+      else if (node.type === "variantGroup") {
+        const variant = node.children.find((item) => item.id === (variants[node.id] || node.default));
+        const box = localBounds(variant?.children ?? [], variants);
+        const corner = apply(transform, { x: box.x + box.width + 4 / zoom, y: box.y - size - 4 / zoom });
+        badges.push({ group: node, x: corner.x, y: corner.y, size });
+        if (variant) visit(variant.children, transform);
+      }
+    }
+  };
+  visit(roots, parent);
+  return badges;
+}
+/** ワールド位置を貼り先の親ローカルへ戻し、親軸で1刻みずらす。T-11/T-27。 */
+export function pasteLocalTransform(sourceWorld: Affine, parentWorld: Affine, step: number): Transform {
+  const local = compose(inverse(parentWorld), sourceWorld);
+  return { x: local.e + step, y: local.f + step, rotation: (Math.atan2(local.b, local.a) * 180) / Math.PI };
+}
+/** スタビ位置の選択は仕様の層に入れず、ProjectFile.ui.phy.stabilizers にキーIDごとに持つ。T-10/T-30。 */
+export type StabilizerSelections = Record<string, string[]>;
+export function stabilizerSelections(project: ProjectFile): StabilizerSelections {
+  const ui = project.ui as { phy?: { stabilizers?: StabilizerSelections } } | undefined;
+  return ui?.phy?.stabilizers ?? {};
+}
+/** 記録がなければ何も選ばない。サイズが変わって候補にない記録は捨てて読む。 */
+export function selectedStabilizers(selections: StabilizerSelections, key: KeyNode): string[] {
+  const ids = selections[key.id] ?? [];
+  const known = new Set(stabilizerCandidates(key.size).map((c) => c.id));
+  return ids.filter((id) => known.has(id));
+}
+export function withStabilizers(project: ProjectFile, keyId: string, ids: string[]): ProjectFile {
+  const ui = (project.ui ?? {}) as Record<string, unknown>,
+    phy = (ui.phy ?? {}) as Record<string, unknown>;
+  return {
+    ...project,
+    ui: { ...ui, phy: { ...phy, stabilizers: { ...stabilizerSelections(project), [keyId]: ids } } },
+  };
+}
+export type MountMark = {
+  id: string;
+  transform: Affine;
+  switchAt: { x: number; y: number };
+  stabs: { x: number; y: number }[];
+};
+/** 表示中のキーごとに、スイッチ位置とスタビ位置をキーのローカル座標で返す。 */
+export function mountMarks(
+  roots: Node[],
+  variants: Record<string, string>,
+  selections: StabilizerSelections,
+  parent: Affine = { a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 },
+): MountMark[] {
+  const marks: MountMark[] = [];
+  const visit = (nodes: Node[], ancestor: Affine) => {
+    for (const node of nodes) {
+      const transform = compose(ancestor, matrix(node.transform));
+      if (node.type === "key") {
+        if (node.decal) continue;
+        marks.push({
+          id: node.id,
+          transform,
+          switchAt: switchPoint(node),
+          stabs: stabilizerPoints(node.size, selectedStabilizers(selections, node)),
+        });
+      } else if (node.type === "cluster") visit(node.children, transform);
+      else if (node.type === "variantGroup") {
+        const variant = node.children.find((item) => item.id === (variants[node.id] ?? node.default));
+        if (variant) visit(variant.children, transform);
+      }
+    }
+  };
+  visit(roots, parent);
+  return marks;
+}

mock/src/ui/phy/usePhyCanvasPointer.ts

@@ -0,0 +1,394 @@
+import { nextTick, onUnmounted, ref, type Ref } from "vue";
+import type { ProjectFile } from "../../domain/project";
+import type { KeyNode, Node } from "../../domain/phy";
+import { apply, worldTransform } from "../../domain/geometry";
+import { keyCorners } from "../../domain/keyShape";
+import { moveNode } from "../../domain/phyCommands";
+import { normalizeSelection, snap } from "./logic";
+import { usePhyLongPress, type HoldMode } from "./usePhyLongPress";
+import { autoPanVelocity } from "./viewport";
+
+type Point = { x: number; y: number };
+type Box = Point & { width: number; height: number };
+type Options = {
+  project: () => ProjectFile;
+  svg: Ref<SVGSVGElement | undefined>;
+  pane: Ref<HTMLElement | undefined>;
+  pan: Ref<Point>;
+  zoom: Ref<number>;
+  grid: Ref<number>;
+  selected: Ref<string[]>;
+  focus: Ref<string | null>;
+  rangeBox: Ref<Box | null>;
+  allNodes: () => Node[];
+  keys: () => { key: KeyNode }[];
+  localPoint: (element: SVGSVGElement | SVGGElement, x: number, y: number) => Point;
+  visibleIds: () => Set<string>;
+  mismatch: () => boolean;
+  isAncestor: (candidate: string, id: string) => boolean;
+  parentLabel: (id: string | null) => string;
+  pressTargets: (id: string) => string[];
+  holdMode: Ref<HoldMode>;
+  setSelection: (id: string, add?: boolean) => void;
+  beginHistory: () => void;
+  commitHistory: () => void;
+  dispatch: (label: string, update: (project: ProjectFile) => ProjectFile) => void;
+};
+
+export function usePhyCanvasPointer(options: Options) {
+  const longPress = usePhyLongPress({ ...options, mode: () => options.holdMode.value });
+  const spaceHeld = ref(false);
+  let preClickSelection: string[] = [];
+  let preClickTarget: string | null = null;
+  let preClickAt = 0;
+  let lastPointer: Point | null = null;
+  let autoPanFrame: number | undefined;
+  let lastAutoPanAt = 0;
+  let panDrag: { start: Point; origin: Point } | null = null;
+  let rangeDrag: { start: Point; shift: boolean; moved: boolean } | null = null;
+  let dragState: {
+    id: string;
+    start: Point;
+    base: ProjectFile;
+    ids: string[];
+    shift: boolean;
+    parents: Map<string, SVGGElement>;
+    starts: Map<string, Point>;
+    moved: boolean;
+  } | null = null;
+
+  function stopAutoPan() {
+    if (autoPanFrame !== undefined) window.cancelAnimationFrame(autoPanFrame);
+    autoPanFrame = undefined;
+    lastAutoPanAt = 0;
+  }
+
+  function updateDraggedPosition(clientX: number, clientY: number) {
+    const state = dragState;
+    if (!state?.moved) return;
+    let phy = state.base.phy;
+    for (const id of state.ids) {
+      const parent = state.parents.get(id);
+      const start = state.starts.get(id);
+      if (!parent || !start) continue;
+      const current = options.localPoint(parent, clientX, clientY);
+      phy = moveNode(
+        phy,
+        id,
+        snap(current.x - start.x, options.grid.value),
+        snap(current.y - start.y, options.grid.value),
+      );
+    }
+    options.dispatch("ドラッグ", (project) => ({ ...project, phy }));
+  }
+
+  function autoPanTick(time: number) {
+    autoPanFrame = undefined;
+    const svg = options.svg.value;
+    const pointer = lastPointer;
+    if (!svg || !pointer || !dragState?.moved || longPress.cycling()) return;
+    const rect = svg.getBoundingClientRect();
+    const velocity = autoPanVelocity(
+      { x: pointer.x, y: pointer.y },
+      { x: rect.left, y: rect.top, width: rect.width, height: rect.height },
+    );
+    if (!velocity.x && !velocity.y) {
+      lastAutoPanAt = 0;
+      return;
+    }
+    const elapsed = lastAutoPanAt ? Math.min((time - lastAutoPanAt) / 1000, 0.05) : 0;
+    lastAutoPanAt = time;
+    const transform = svg.getScreenCTM();
+    if (elapsed && transform) {
+      options.pan.value = {
+        x: options.pan.value.x - (velocity.x * elapsed) / transform.a,
+        y: options.pan.value.y - (velocity.y * elapsed) / transform.d,
+      };
+      void nextTick(() => {
+        if (dragState?.moved && lastPointer) updateDraggedPosition(lastPointer.x, lastPointer.y);
+      });
+    }
+    autoPanFrame = window.requestAnimationFrame(autoPanTick);
+  }
+
+  function scheduleAutoPan() {
+    const svg = options.svg.value;
+    if (!svg || !lastPointer || !dragState?.moved || longPress.cycling()) {
+      stopAutoPan();
+      return;
+    }
+    const rect = svg.getBoundingClientRect();
+    const velocity = autoPanVelocity(
+      { x: lastPointer.x, y: lastPointer.y },
+      { x: rect.left, y: rect.top, width: rect.width, height: rect.height },
+    );
+    if (!velocity.x && !velocity.y) {
+      stopAutoPan();
+    } else if (autoPanFrame === undefined) {
+      autoPanFrame = window.requestAnimationFrame(autoPanTick);
+    }
+  }
+
+  function priorSelection() {
+    return preClickSelection;
+  }
+
+  function parentElementFor(id: string, fallback?: SVGGElement) {
+    const elements = options.svg.value?.querySelectorAll(`[data-node-id="${id}"]`);
+    return (
+      (elements?.item((elements.length || 1) - 1)?.parentElement as SVGGElement | undefined) ||
+      (fallback?.parentElement?.parentElement as SVGGElement | undefined) ||
+      options.svg.value!
+    );
+  }
+
+  function beginEmptyPointer(event: PointerEvent, point?: Point) {
+    const svg = options.svg.value;
+    const start = point ?? (svg ? options.localPoint(svg, event.clientX, event.clientY) : { x: 0, y: 0 });
+    rangeDrag = { start, shift: event.shiftKey, moved: false };
+    options.rangeBox.value = { ...start, width: 0, height: 0 };
+    window.addEventListener("pointermove", move, true);
+    window.addEventListener("pointerup", up, true);
+    svg?.setPointerCapture(event.pointerId);
+  }
+
+  function canvasDown(event: PointerEvent) {
+    const svg = options.svg.value;
+    if (event.target !== svg || !svg) return;
+    const point = options.localPoint(svg, event.clientX, event.clientY);
+    if (event.button === 1 || spaceHeld.value) {
+      panDrag = { start: point, origin: { ...options.pan.value } };
+      window.addEventListener("pointermove", move, true);
+      window.addEventListener("pointerup", up, true);
+      svg.setPointerCapture(event.pointerId);
+      event.preventDefault();
+      return;
+    }
+    beginEmptyPointer(event, point);
+  }
+
+  function updateRange(event: PointerEvent) {
+    if (!rangeDrag || !options.svg.value) return;
+    const point = options.localPoint(options.svg.value, event.clientX, event.clientY);
+    const start = rangeDrag.start;
+    rangeDrag.moved = Math.hypot(point.x - start.x, point.y - start.y) >= 4;
+    options.rangeBox.value = {
+      x: Math.min(start.x, point.x),
+      y: Math.min(start.y, point.y),
+      width: Math.abs(point.x - start.x),
+      height: Math.abs(point.y - start.y),
+    };
+  }
+
+  function down(event: PointerEvent, node: Node, _element: SVGGElement) {
+    const svg = options.svg.value;
+    if (event.button === 1 || spaceHeld.value) {
+      const point = svg ? options.localPoint(svg, event.clientX, event.clientY) : { x: 0, y: 0 };
+      panDrag = { start: point, origin: { ...options.pan.value } };
+      window.addEventListener("pointermove", move, true);
+      window.addEventListener("pointerup", up, true);
+      svg?.setPointerCapture(event.pointerId);
+      event.preventDefault();
+      return;
+    }
+    if (event.altKey) return;
+    options.pane.value?.focus();
+    if (options.focus.value && !options.visibleIds().has(node.id)) {
+      beginEmptyPointer(event);
+      return;
+    }
+    if (options.mismatch()) {
+      options.setSelection(node.id, event.shiftKey);
+      return;
+    }
+    if (preClickTarget !== node.id || Date.now() - preClickAt > 600) {
+      preClickSelection = [...options.selected.value];
+    }
+    preClickTarget = node.id;
+    preClickAt = Date.now();
+    longPress.reset();
+    dragState = {
+      id: node.id,
+      start: { x: event.clientX, y: event.clientY },
+      base: options.project(),
+      ids: [...options.selected.value],
+      shift: event.shiftKey,
+      parents: new Map(),
+      starts: new Map(),
+      moved: false,
+    };
+    window.addEventListener("pointermove", move, true);
+    window.addEventListener("pointerup", up, true);
+    if (node.type === "key") longPress.start(event, node.id);
+    (event.currentTarget as Element).setPointerCapture?.(event.pointerId);
+  }
+
+  function move(event: PointerEvent) {
+    const svg = options.svg.value;
+    if (!svg) return;
+    const point = options.localPoint(svg, event.clientX, event.clientY);
+    if (panDrag) {
+      options.pan.value = {
+        x: panDrag.origin.x + point.x - panDrag.start.x,
+        y: panDrag.origin.y + point.y - panDrag.start.y,
+      };
+      return;
+    }
+    if (rangeDrag) {
+      updateRange(event);
+      return;
+    }
+    if (!dragState) return;
+    lastPointer = { x: event.clientX, y: event.clientY };
+    if (longPress.picking()) {
+      longPress.point(event.clientX, event.clientY);
+      return;
+    }
+    const state = dragState;
+    if (Math.hypot(event.clientX - state.start.x, event.clientY - state.start.y) < 4) return;
+    longPress.cancelPending();
+    if (longPress.cycling()) {
+      const { id, shift } = longPress.take();
+      options.selected.value = normalizeSelection(
+        options.project().phy,
+        shift ? [...preClickSelection, id] : [id],
+      );
+      state.ids = [id];
+      state.base = options.project();
+      state.parents = new Map([[id, parentElementFor(id)]]);
+      state.starts = new Map([
+        [id, options.localPoint(state.parents.get(id)!, state.start.x, state.start.y)],
+      ]);
+      options.beginHistory();
+    } else if (!state.moved) {
+      const includesAncestor = preClickSelection.some(
+        (id) => id === state.id || options.isAncestor(id, state.id),
+      );
+      const ids = includesAncestor ? preClickSelection : [state.id];
+      if (!includesAncestor) options.selected.value = [state.id];
+      state.ids = ids;
+      state.base = options.project();
+      state.parents = new Map(ids.map((id) => [id, parentElementFor(id)]));
+      state.starts = new Map(
+        [...state.parents].map(([id, parent]) => [
+          id,
+          options.localPoint(parent, state.start.x, state.start.y),
+        ]),
+      );
+      options.beginHistory();
+    }
+    state.moved = true;
+    updateDraggedPosition(event.clientX, event.clientY);
+    scheduleAutoPan();
+  }
+
+  function up() {
+    stopAutoPan();
+    window.removeEventListener("pointermove", move, true);
+    window.removeEventListener("pointerup", up, true);
+    if (panDrag) {
+      panDrag = null;
+      return;
+    }
+    if (rangeDrag) {
+      if (rangeDrag.moved && options.rangeBox.value) {
+        const box = options.rangeBox.value;
+        const worldBox = {
+          x: (box.x - options.pan.value.x) / options.zoom.value,
+          y: (box.y - options.pan.value.y) / options.zoom.value,
+          width: box.width / options.zoom.value,
+          height: box.height / options.zoom.value,
+        };
+        const scope = options.visibleIds();
+        const hits: string[] = [];
+        for (const item of options.keys()) {
+          if (!scope.has(item.key.id)) continue;
+          const transform = worldTransform(options.project().phy, item.key.id);
+          const corners = keyCorners(item.key.size).map((point) => apply(transform, point));
+          const xs = corners.map((point) => point.x);
+          const ys = corners.map((point) => point.y);
+          if (
+            intersects(worldBox, {
+              x: Math.min(...xs),
+              y: Math.min(...ys),
+              width: Math.max(...xs) - Math.min(...xs),
+              height: Math.max(...ys) - Math.min(...ys),
+            })
+          ) {
+            hits.push(item.key.id);
+          }
+        }
+        for (const node of options
+          .allNodes()
+          .filter((item) => item.type === "component" && scope.has(item.id))) {
+          const transform = worldTransform(options.project().phy, node.id);
+          if (
+            intersects(worldBox, { x: transform.e - 0.16, y: transform.f - 0.16, width: 0.32, height: 0.32 })
+          ) {
+            hits.push(node.id);
+          }
+        }
+        options.selected.value = normalizeSelection(
+          options.project().phy,
+          rangeDrag.shift ? [...options.selected.value, ...hits] : hits,
+        );
+      } else {
+        options.selected.value = [];
+      }
+      rangeDrag = null;
+      options.rangeBox.value = null;
+      return;
+    }
+    const pick = longPress.finish();
+    if (pick) {
+      options.selected.value = normalizeSelection(
+        options.project().phy,
+        pick.shift ? [...options.selected.value, pick.id] : [pick.id],
+      );
+    }
+    const moved = dragState?.moved ?? false;
+    if (dragState?.moved) options.commitHistory();
+    else if (dragState && !longPress.wasActivated()) {
+      const id = dragState.id;
+      const next = dragState.shift
+        ? options.selected.value.includes(id)
+          ? options.selected.value.filter((selectedId) => selectedId !== id)
+          : [...options.selected.value, id]
+        : [id];
+      options.selected.value = normalizeSelection(options.project().phy, next);
+    }
+    if (longPress.wasActivated() || moved) preClickTarget = null;
+    dragState = null;
+    lastPointer = null;
+  }
+
+  function spaceUp(event: KeyboardEvent) {
+    if (event.code === "Space") spaceHeld.value = false;
+  }
+
+  onUnmounted(stopAutoPan);
+
+  return {
+    canvasDown,
+    down,
+    move,
+    up,
+    spaceUp,
+    hold: {
+      open: longPress.open,
+      mode: longPress.mode,
+      pos: longPress.pos,
+      candidates: longPress.candidates,
+      names: longPress.names,
+      index: longPress.index,
+      step: longPress.step,
+      pointing: longPress.pointing,
+    },
+    spaceHeld,
+    priorSelection,
+  };
+}
+
+function intersects(a: Box, b: Box) {
+  return a.x <= b.x + b.width && a.x + a.width >= b.x && a.y <= b.y + b.height && a.y + a.height >= b.y;
+}

mock/src/ui/phy/usePhyCanvasView.ts

@@ -0,0 +1,177 @@
+import { computed, type Ref } from "vue";
+import type { ProjectFile } from "../../domain/project";
+import type { Node, VariantGroupNode } from "../../domain/phy";
+import {
+  apply,
+  compose,
+  flattenKeys,
+  inverse,
+  matrix,
+  worldTransform,
+  type Affine,
+} from "../../domain/geometry";
+import { removeFocusedSubtree, structuralNodes } from "./logic";
+
+type Options = {
+  project: () => ProjectFile;
+  size: Ref<{ w: number; h: number }>;
+  pan: Ref<{ x: number; y: number }>;
+  zoom: Ref<number>;
+  focus: Ref<string | null>;
+  variants: Ref<Record<string, string>>;
+  grid: Ref<number>;
+  selected: Ref<string[]>;
+  node: (id: string) => Node | undefined;
+  parentId: (id: string) => string | null;
+  parentLabel: (id: string | null) => string;
+  selectedContainer: (id: string) => string | null;
+};
+
+export function usePhyCanvasView(options: Options) {
+  const keys = computed(() => flattenKeys(options.project().phy, options.variants.value));
+  const groupsAll = computed(() => structuralNodes(options.project().phy.root));
+  const outsideNodes = computed(() =>
+    options.focus.value ? removeFocusedSubtree(options.project().phy.root, options.focus.value) : [],
+  );
+  const gridLines = computed(() => {
+    const step = options.grid.value;
+    const xMin = Math.floor(-options.pan.value.x / options.zoom.value / step);
+    const xMax = Math.ceil((options.size.value.w - options.pan.value.x) / options.zoom.value / step);
+    const yMin = Math.floor(-options.pan.value.y / options.zoom.value / step);
+    const yMax = Math.ceil((options.size.value.h - options.pan.value.y) / options.zoom.value / step);
+    const lines: { d: string; major: boolean }[] = [];
+    for (let index = xMin; index <= xMax; index++) {
+      lines.push({ d: `M ${index * step} -100 V 100`, major: Math.abs((index * step) % 1) < 1e-8 });
+    }
+    for (let index = yMin; index <= yMax; index++) {
+      lines.push({ d: `M -100 ${index * step} H 100`, major: Math.abs((index * step) % 1) < 1e-8 });
+    }
+    return lines;
+  });
+  const variantGroups = computed(() =>
+    groupsAll.value.filter((node): node is VariantGroupNode => node.type === "variantGroup"),
+  );
+  const focusGridLines = computed(() => {
+    const focusId = options.focus.value;
+    if (!focusId || !options.node(focusId)) return [];
+    const screen = compose(
+      {
+        a: options.zoom.value,
+        b: 0,
+        c: 0,
+        d: options.zoom.value,
+        e: options.pan.value.x,
+        f: options.pan.value.y,
+      },
+      worldTransform(options.project().phy, focusId),
+    );
+    const toLocal = inverse(screen);
+    const corners = [
+      { x: 0, y: 0 },
+      { x: options.size.value.w, y: 0 },
+      { x: options.size.value.w, y: options.size.value.h },
+      { x: 0, y: options.size.value.h },
+    ].map((point) => apply(toLocal, point));
+    const xs = corners.map((point) => point.x);
+    const ys = corners.map((point) => point.y);
+    const step = options.grid.value;
+    const lines: { d: string; major: boolean }[] = [];
+    for (
+      let index = Math.floor(Math.min(...xs) / step);
+      index <= Math.ceil(Math.max(...xs) / step);
+      index++
+    ) {
+      lines.push({ d: `M ${index * step} -100 V 100`, major: Math.abs((index * step) % 1) < 1e-8 });
+    }
+    for (
+      let index = Math.floor(Math.min(...ys) / step);
+      index <= Math.ceil(Math.max(...ys) / step);
+      index++
+    ) {
+      lines.push({ d: `M -100 ${index * step} H 100`, major: Math.abs((index * step) % 1) < 1e-8 });
+    }
+    return lines;
+  });
+  const moveTargets = computed(() => {
+    const excluded = new Set<string>();
+    const add = (node: Node) => {
+      excluded.add(node.id);
+      if (node.type === "cluster") node.children.forEach(add);
+      if (node.type === "variantGroup") {
+        node.children.forEach((variant) => {
+          excluded.add(variant.id);
+          variant.children.forEach(add);
+        });
+      }
+    };
+    options.selected.value.forEach((id) => {
+      const node = options.node(id);
+      if (node) add(node);
+    });
+    return [
+      { id: "__root__", label: "root" },
+      ...groupsAll.value
+        .filter((node) => node.type === "cluster" && !excluded.has(node.id))
+        .map((node) => ({ id: node.id, label: node.name || "クラスター" })),
+      ...variantGroups.value.flatMap((group) =>
+        group.children
+          .filter((variant) => !excluded.has(variant.id))
+          .map((variant) => ({ id: variant.id, label: `${group.name} / ${variant.name}` })),
+      ),
+    ];
+  });
+
+  function parentMatrix(id: string): Affine {
+    const node = options.node(id);
+    return node
+      ? compose(worldTransform(options.project().phy, id), inverse(matrix(node.transform)))
+      : { a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 };
+  }
+
+  function focusAngle(id: string) {
+    const transform = parentMatrix(id);
+    return (Math.atan2(transform.b, transform.a) * 180) / Math.PI;
+  }
+
+  function affineText(transform: Affine) {
+    return `matrix(${transform.a} ${transform.b} ${transform.c} ${transform.d} ${transform.e} ${transform.f})`;
+  }
+
+  function focusCrumbs(id: string): { id: string | null; label: string }[] {
+    const ids = [id];
+    let parent = options.parentId(id);
+    while (parent) {
+      ids.unshift(parent);
+      parent = options.parentId(parent);
+    }
+    return [
+      { id: null, label: "root" },
+      ...ids.map((item) => ({
+        id:
+          groupsAll.value.find(
+            (node) => node.type === "variantGroup" && node.children.some((variant) => variant.id === item),
+          )?.id || item,
+        label: options.parentLabel(item),
+      })),
+    ];
+  }
+
+  const propertyNode = computed(() =>
+    options.selected.value.length === 1 ? options.node(options.selected.value[0]!) : null,
+  );
+
+  return {
+    keys,
+    groupsAll,
+    outsideNodes,
+    gridLines,
+    variantGroups,
+    focusGridLines,
+    moveTargets,
+    parentMatrix,
+    focusAngle,
+    affineText,
+    focusCrumbs,
+    propertyNode,
+  };
+}

mock/src/ui/phy/usePhyClipboard.ts

@@ -0,0 +1,103 @@
+import type { Ref } from "vue";
+import type { ProjectFile } from "../../domain/project";
+import type { KeyNode, Node } from "../../domain/phy";
+import { cloneNodesWithNewIds, insertNodes, reparent, reparentToVariant } from "../../domain/phyCommands";
+import { worldTransform, type Affine } from "../../domain/geometry";
+import { importKle } from "../../io/kleImport";
+import { treeIndex, pasteLocalTransform } from "./logic";
+
+type ClipboardNode = { node: Node; world: Affine };
+type Options = {
+  project: () => ProjectFile;
+  mismatch: () => boolean;
+  selected: Ref<string[]>;
+  cut: Ref<string[]>;
+  grid: Ref<number>;
+  node: (id: string) => Node | undefined;
+  selectedContainer: (id: string) => string | null;
+  insertionParent: () => string | null;
+  parentMatrix: (project: ProjectFile, parent: string | null) => Affine;
+  dispatch: (label: string, update: (project: ProjectFile) => ProjectFile) => void;
+  setSelected: (ids: string[]) => void;
+};
+
+export function usePhyClipboard(options: Options) {
+  let clipboard: ClipboardNode[] = [];
+  let marker = "";
+
+  function copyEvent(event: ClipboardEvent) {
+    if (!options.selected.value.length || !event.clipboardData) return;
+    const project = options.project();
+    clipboard = options.selected.value.map((id) => ({
+      node: structuredClone(options.node(id)!),
+      world: worldTransform(project.phy, id),
+    }));
+    marker = `beyond-kle-clipboard:${crypto.randomUUID()}`;
+    event.clipboardData.setData("text/plain", marker);
+    if (event.type === "cut") options.cut.value = [...options.selected.value];
+    event.preventDefault();
+  }
+
+  function pasteEvent(event: ClipboardEvent) {
+    if (options.mismatch()) return;
+    const text = event.clipboardData?.getData("text/plain") || "";
+    if (text === marker && clipboard.length) {
+      event.preventDefault();
+      const parent = options.selected.value.length
+        ? options.selectedContainer(options.selected.value[0]!)
+        : options.insertionParent();
+      if (options.cut.value.length) {
+        const ids = [...options.cut.value];
+        options.dispatch("カット貼り付け", (project) => ({
+          ...ids.reduce((next, id) => {
+            const isVariant = parent !== null && treeIndex(next.phy.root).groupForVariant(parent) !== null;
+            return {
+              ...next,
+              phy: isVariant ? reparentToVariant(next.phy, id, parent!) : reparent(next.phy, id, parent),
+            };
+          }, project),
+        }));
+        options.setSelected(ids);
+        options.cut.value = [];
+      } else {
+        let ids: string[] = [];
+        options.dispatch("貼り付け", (project) => {
+          const copies = cloneNodesWithNewIds(clipboard.map((item) => item.node));
+          const parentWorld = options.parentMatrix(project, parent);
+          copies.forEach((node, index) => {
+            node.transform = pasteLocalTransform(clipboard[index]!.world, parentWorld, options.grid.value);
+            ids.push(node.id);
+          });
+          return { ...project, phy: insertNodes(project.phy, parent, copies) };
+        });
+        options.setSelected(ids);
+      }
+      return;
+    }
+    try {
+      const { phy, keyOrder } = importKle(JSON.parse(text));
+      if (!event.clipboardData) return;
+      event.preventDefault();
+      let ids: string[] = [];
+      options.dispatch("KLE貼り付け", (project) => {
+        const nodes = phy.root
+          .filter((node): node is KeyNode => node.type === "key")
+          .map((key) => ({ ...key, profile: project.phy.profiles[0]?.id || key.profile }));
+        ids = nodes.map((node) => node.id);
+        const parent = options.selected.value.length
+          ? options.selectedContainer(options.selected.value[0]!)
+          : options.insertionParent();
+        return {
+          ...project,
+          phy: insertNodes(project.phy, parent, nodes),
+          idx: { ...project.idx, order: [...project.idx.order, ...keyOrder] },
+        };
+      });
+      options.setSelected(ids);
+    } catch {
+      // 外部クリップボードがKLE JSONでなければ無視する。
+    }
+  }
+
+  return { copyEvent, pasteEvent };
+}

mock/src/ui/phy/usePhyCommands.ts

@@ -0,0 +1,407 @@
+import type { Ref } from "vue";
+import type { ProjectFile } from "../../domain/project";
+import type { KeyNode, Node, Size, VariantGroupNode } from "../../domain/phy";
+import {
+  addComponentToParent,
+  addVariant as addVariantCommand,
+  addKeyToParent,
+  clusterNodes,
+  cloneNodesWithNewIds,
+  createVariantGroupInParent,
+  insertNodes,
+  reparent,
+  reparentToVariant,
+  setDefaultVariant,
+  uncluster,
+} from "../../domain/phyCommands";
+import { deleteNodeCascade, listDeleteReferences } from "../../domain/deleteCascade";
+import { apply, inverse, matrix, worldTransform, type Affine } from "../../domain/geometry";
+import { newRowPosition, rowEndPosition } from "../../domain/rows";
+import { IRREGULAR_KEY_PRESETS, keyOrigin } from "../../domain/keyShape";
+import { pasteLocalTransform, localBounds, treeIndex } from "./logic";
+
+type Options = {
+  project: () => ProjectFile;
+  selected: Ref<string[]>;
+  variants: Ref<Record<string, string>>;
+  focus: Ref<string | null>;
+  grid: Ref<number>;
+  zoom: Ref<number>;
+  pan: Ref<{ x: number; y: number }>;
+  size: Ref<{ w: number; h: number }>;
+  svg: Ref<SVGSVGElement | undefined>;
+  pane: Ref<HTMLElement | undefined>;
+  popover: Ref<string | null>;
+  confirm: Ref<string | null>;
+  confirmIds: Ref<string[]>;
+  confirmRefs: Ref<ReturnType<typeof listDeleteReferences>>;
+  confirmPos: Ref<{ left: number; top: number }>;
+  node: (id: string) => Node | undefined;
+  allNodes: (roots?: Node[]) => Node[];
+  parentId: (id: string) => string | null;
+  selectedContainer: (id: string) => string | null;
+  groupForVariant: (id: string) => string | null;
+  variantGroups: () => VariantGroupNode[];
+  dispatch: (label: string, update: (project: ProjectFile) => ProjectFile) => void;
+  emitError: (message: string) => void;
+};
+
+export function usePhyCommands(options: Options) {
+  function parentMatrix(project: ProjectFile, parent: string | null): Affine {
+    if (!parent) return { a: 1, b: 0, c: 0, d: 1, e: 0, f: 0 };
+    if (treeIndex(project.phy.root).nodes.get(parent)?.type === "cluster")
+      return worldTransform(project.phy, parent);
+    const groupId = treeIndex(project.phy.root).groupForVariant(parent);
+    if (groupId) return worldTransform(project.phy, groupId);
+    throw new Error(`Unknown parent: ${parent}`);
+  }
+
+  function nodesInContainer(container: string | null): Node[] {
+    if (container === null) return options.project().phy.root;
+    const node = options.node(container);
+    if (node?.type === "cluster") return node.children;
+    if (node?.type === "variantGroup") {
+      const variant = node.children.find(
+        (item) => item.id === (options.variants.value[node.id] || node.default),
+      );
+      return variant?.children ?? [];
+    }
+    const groupId = options.groupForVariant(container);
+    const group = groupId ? options.node(groupId) : null;
+    if (group?.type === "variantGroup")
+      return group.children.find((variant) => variant.id === container)?.children ?? [];
+    return [];
+  }
+
+  function directChildren(id: string): Node[] {
+    const node = options.node(id);
+    if (node?.type === "cluster") return node.children;
+    if (node?.type === "variantGroup") {
+      const variant = node.children.find(
+        (item) => item.id === (options.variants.value[node.id] || node.default),
+      );
+      return variant?.children ?? [];
+    }
+    return [];
+  }
+
+  function tabItem(node: Node) {
+    if (node.type === "key") {
+      const center = apply(matrix(node.transform), { x: node.size.w / 2, y: node.size.h / 2 });
+      return { id: node.id, x: center.x, y: center.y };
+    }
+    if (node.type === "component") return { id: node.id, x: node.transform.x, y: node.transform.y };
+    const bounds =
+      node.type === "cluster"
+        ? localBounds(node.children, options.variants.value)
+        : localBounds(directChildren(node.id), options.variants.value);
+    const center = apply(matrix(node.transform), {
+      x: bounds.x + bounds.width / 2,
+      y: bounds.y + bounds.height / 2,
+    });
+    return { id: node.id, x: center.x, y: center.y };
+  }
+
+  function centerInParent(parent: string | null) {
+    const world = {
+      x: (options.size.value.w / 2 - options.pan.value.x) / options.zoom.value,
+      y: (options.size.value.h / 2 - options.pan.value.y) / options.zoom.value,
+    };
+    return apply(inverse(parentMatrix(options.project(), parent)), world);
+  }
+
+  function chooseVariant(group: Node, id: string) {
+    if (group.type !== "variantGroup") return;
+    options.variants.value = { ...options.variants.value, [group.id]: id };
+    const valid = new Set(
+      group.children.find((variant) => variant.id === id)?.children.map((item) => item.id) || [],
+    );
+    if (options.selected.value.some((selectedId) => !valid.has(selectedId)))
+      options.selected.value = [group.id];
+    options.popover.value = null;
+  }
+
+  /** The node id present in `after` but not in `before`; the tree order does not tell where it went. */
+  function addedId(before: ProjectFile["phy"], after: ProjectFile["phy"]): string {
+    const existing = new Set(options.allNodes(before.root).map((node) => node.id));
+    return options.allNodes(after.root).find((node) => !existing.has(node.id))?.id || "";
+  }
+
+  function keyAdd(size: Size = { w: 1, h: 1 }) {
+    const chosen = options.node(options.selected.value.at(-1) || "");
+    // A selected cluster, or the shown variant of a selected group, receives a new row inside it,
+    // like an empty selection inside the focus.
+    const parent =
+      chosen?.type === "cluster"
+        ? chosen.id
+        : chosen?.type === "variantGroup"
+          ? options.variants.value[chosen.id] || chosen.default
+          : chosen
+            ? options.selectedContainer(chosen.id)
+            : insertionParent();
+    const keys = nodesInContainer(parent).flatMap((node) =>
+      node.type === "key" ? [{ id: node.id, x: node.transform.x, y: node.transform.y, ...node.size }] : [],
+    );
+    const snap = (value: number) => Math.round(value / options.grid.value) * options.grid.value;
+    const center = centerInParent(parent);
+    const { x, y } =
+      chosen?.type === "key"
+        ? rowEndPosition(keys, chosen.id)!
+        : chosen?.type === "component"
+          ? { x: snap(chosen.transform.x + 1), y: snap(chosen.transform.y) }
+          : (newRowPosition(keys) ?? { x: snap(center.x), y: snap(center.y) });
+    // The key's bounding box, not its origin, goes to the found position (T-32).
+    const offset = keyOrigin(size);
+    let id = "";
+    options.dispatch("キー追加", (project) => {
+      const at = { x: x - offset.x, y: y - offset.y, rotation: 0 };
+      const phy = addKeyToParent(project.phy, parent, at, size);
+      id = addedId(project.phy, phy);
+      return { ...project, phy, idx: { ...project.idx, order: [...project.idx.order, id] } };
+    });
+    if (id) options.selected.value = [id];
+  }
+
+  function presetAdd(presetId: string) {
+    const preset = IRREGULAR_KEY_PRESETS.find((item) => item.id === presetId);
+    if (preset) keyAdd(preset.size);
+  }
+
+  function insertionParent() {
+    const focusId = options.focus.value;
+    if (!focusId) return null;
+    const focused = options.node(focusId);
+    if (focused?.type === "cluster") return focused.id;
+    if (focused?.type === "variantGroup") return options.variants.value[focused.id] ?? focused.default;
+    return null;
+  }
+
+  function partAdd(group: string) {
+    const selected = options.node(options.selected.value.at(-1) || "");
+    const parent = selected ? options.selectedContainer(selected.id) : insertionParent();
+    const center = centerInParent(parent);
+    const x =
+      Math.round(
+        (selected ? selected.transform.x + (selected.type === "key" ? selected.size.w : 1) : center.x) /
+          options.grid.value,
+      ) * options.grid.value;
+    const y =
+      Math.round((selected ? selected.transform.y : center.y) / options.grid.value) * options.grid.value;
+    let id = "";
+    options.dispatch("部品追加", (project) => {
+      const phy = addComponentToParent(
+        project.phy,
+        parent,
+        { x, y, rotation: 0 },
+        group === "その他" ? undefined : group,
+      );
+      id = addedId(project.phy, phy);
+      return { ...project, phy };
+    });
+    if (id) options.selected.value = [id];
+  }
+
+  function makeCluster() {
+    try {
+      let id = "";
+      options.dispatch("クラスター化", (project) => {
+        const phy = clusterNodes(project.phy, options.selected.value);
+        id =
+          options
+            .allNodes(phy.root)
+            .find(
+              (node) =>
+                node.type === "cluster" &&
+                !options.allNodes(project.phy.root).some((old) => old.id === node.id),
+            )?.id || "";
+        return { ...project, phy };
+      });
+      if (id) options.selected.value = [id];
+    } catch (error) {
+      options.emitError(String(error));
+    }
+  }
+
+  function ungroup() {
+    const ids = options.selected.value.filter((id) => options.node(id)?.type === "cluster");
+    if (ids.length)
+      options.dispatch("クラスター解除", (project) => ({
+        ...project,
+        phy: ids.reduce((phy, id) => uncluster(phy, id), project.phy),
+      }));
+    options.selected.value = [];
+  }
+
+  function variantGroup() {
+    if (!options.selected.value.length) return;
+    const parent = options.selectedContainer(options.selected.value[0]!);
+    let id = "";
+    options.dispatch("バリアントグループ作成", (project) => {
+      let phy = createVariantGroupInParent(
+        project.phy,
+        parent,
+        "Variant Group",
+        { x: 0, y: 0, rotation: 0 },
+        [{ name: "Option A" }, { name: "Option B" }],
+      );
+      const group = options
+        .allNodes(phy.root)
+        .find(
+          (node) =>
+            node.type === "variantGroup" &&
+            !options.allNodes(project.phy.root).some((old) => old.id === node.id),
+        );
+      if (group?.type !== "variantGroup") return { ...project, phy };
+      id = group.id;
+      for (const child of options.selected.value) phy = reparentToVariant(phy, child, group.children[0]!.id);
+      return {
+        ...project,
+        phy,
+        output: {
+          ...project.output,
+          variantSelection: { ...project.output.variantSelection, [group.id]: group.default },
+        },
+      };
+    });
+    if (id) options.selected.value = [id];
+  }
+
+  function duplicate() {
+    if (!options.selected.value.length) return;
+    const originals = options.selected.value
+      .map((id) => options.node(id))
+      .filter((node): node is Node => !!node);
+    const parent = options.selectedContainer(options.selected.value[0]!);
+    const worlds = originals.map((node) => worldTransform(options.project().phy, node.id));
+    let ids: string[] = [];
+    options.dispatch("複製", (project) => {
+      const copies = cloneNodesWithNewIds(originals);
+      const parentWorld = parentMatrix(project, parent);
+      copies.forEach((node, index) => {
+        node.transform = pasteLocalTransform(worlds[index]!, parentWorld, options.grid.value);
+        ids.push(node.id);
+      });
+      return { ...project, phy: insertNodes(project.phy, parent, copies) };
+    });
+    options.selected.value = ids;
+  }
+
+  function moveSelectionTo(target: string) {
+    const destination = target === "__root__" ? null : target;
+    try {
+      options.dispatch("reparent", (project) => ({
+        ...project,
+        phy: options.selected.value.reduce(
+          (phy, id) =>
+            destination && options.groupForVariant(destination)
+              ? reparentToVariant(phy, id, destination)
+              : reparent(phy, id, destination),
+          project.phy,
+        ),
+      }));
+    } catch (error) {
+      options.emitError(String(error));
+    }
+  }
+
+  function askDelete(id = options.selected.value[0], event?: MouseEvent) {
+    const ids = id ? (options.selected.value.includes(id) ? options.selected.value : [id]) : [];
+    if (!ids.length) return;
+    options.confirmIds.value = ids;
+    options.confirm.value = id!;
+    options.confirmRefs.value = ids.flatMap((selectedId) =>
+      listDeleteReferences(options.project(), selectedId),
+    );
+    if (event) {
+      const rect = (event.currentTarget as Element).getBoundingClientRect();
+      const pane = options.pane.value?.getBoundingClientRect();
+      const left = rect.right + 380 < (pane?.right ?? Infinity) ? rect.left : rect.left - 380;
+      const top = rect.bottom + 240 < (pane?.bottom ?? Infinity) ? rect.bottom + 4 : rect.top - 240;
+      options.confirmPos.value = overlayPoint(left, top, 380, 240);
+    } else {
+      const rects = ids.flatMap((selectedId) =>
+        [...(options.svg.value?.querySelectorAll(`[data-node-id="${selectedId}"]`) ?? [])].map((element) =>
+          element.getBoundingClientRect(),
+        ),
+      );
+      if (rects.length) {
+        const right = Math.max(...rects.map((rect) => rect.right));
+        const bottom = Math.max(...rects.map((rect) => rect.bottom));
+        const pane = options.pane.value?.getBoundingClientRect();
+        const left = right + 388 < (pane?.right ?? Infinity) ? right + 8 : right - 388;
+        const top = bottom + 248 < (pane?.bottom ?? Infinity) ? bottom + 8 : bottom - 248;
+        options.confirmPos.value = overlayPoint(left, top, 380, 240);
+      }
+    }
+  }
+
+  function overlayPoint(clientX: number, clientY: number, width: number, height: number) {
+    const rect = options.pane.value?.getBoundingClientRect();
+    return {
+      left: Math.max(4, Math.min(clientX - (rect?.left ?? 0), (rect?.width ?? width) - width - 4)),
+      top: Math.max(4, Math.min(clientY - (rect?.top ?? 0), (rect?.height ?? height) - height - 4)),
+    };
+  }
+
+  function deleteConfirmed() {
+    if (!options.confirm.value) return;
+    const ids = [...options.confirmIds.value];
+    const shownGroups = ids
+      .map(
+        (id) =>
+          options
+            .variantGroups()
+            .find(
+              (group) =>
+                group.children.some((variant) => variant.id === id) &&
+                options.variants.value[group.id] === id,
+            )?.id,
+      )
+      .filter((id): id is string => !!id);
+    options.dispatch("削除", (project) => ids.reduce((next, id) => deleteNodeCascade(next, id), project));
+    const next = { ...options.variants.value };
+    for (const id of shownGroups) {
+      const group = options.variantGroups().find((item) => item.id === id);
+      if (group) next[id] = group.default;
+      else delete next[id];
+    }
+    options.variants.value = next;
+    options.selected.value = [];
+    options.confirm.value = null;
+    options.confirmIds.value = [];
+  }
+
+  function setDefault(groupId: string, variantId: string) {
+    options.dispatch("既定変更", (project) => ({
+      ...project,
+      phy: setDefaultVariant(project.phy, groupId, variantId),
+    }));
+  }
+
+  function addVariant(groupId: string, name: string) {
+    options.dispatch("バリアント追加", (project) => ({
+      ...project,
+      phy: addVariantCommand(project.phy, groupId, name),
+    }));
+  }
+
+  return {
+    parentMatrix,
+    nodesInContainer,
+    directChildren,
+    tabItem,
+    chooseVariant,
+    keyAdd,
+    presetAdd,
+    partAdd,
+    makeCluster,
+    ungroup,
+    variantGroup,
+    duplicate,
+    moveSelectionTo,
+    askDelete,
+    deleteConfirmed,
+    setDefault,
+    addVariant,
+  };
+}

mock/src/ui/phy/usePhyKeyboard.ts

@@ -0,0 +1,253 @@
+import type { Ref } from "vue";
+import type { ProjectFile } from "../../domain/project";
+import type { KeyNode, Node } from "../../domain/phy";
+import { moveNode, resizeKey, rotateNode } from "../../domain/phyCommands";
+import { nextGrid, resolveKey, tabOrder } from "./logic";
+
+type Options = {
+  project: () => ProjectFile;
+  mismatch: () => boolean;
+  pane: Ref<HTMLElement | undefined>;
+  selected: Ref<string[]>;
+  focus: Ref<string | null>;
+  grid: Ref<number>;
+  zoom: Ref<number>;
+  showHelp: Ref<boolean>;
+  popover: Ref<string | null>;
+  confirm: Ref<string | null>;
+  spaceHeld: Ref<boolean>;
+  variants: Ref<Record<string, string>>;
+  priorChild: Map<string, string>;
+  node: (id: string) => Node | undefined;
+  allNodes: (roots?: Node[]) => Node[];
+  parentId: (id: string) => string | null;
+  selectedContainer: (id: string) => string | null;
+  insertionParent: () => string | null;
+  nodesInContainer: (container: string | null) => Node[];
+  directChildren: (id: string) => Node[];
+  tabItem: (node: Node) => { id: string; x: number; y: number };
+  dispatch: (label: string, update: (project: ProjectFile) => ProjectFile) => void;
+  fit: () => void;
+  fitSelected: () => void;
+  focusIn: (id: string) => void;
+  makeCluster: () => void;
+  ungroup: () => void;
+  duplicate: () => void;
+  keyAdd: () => void;
+  askDelete: () => void;
+  deleteConfirmed: () => void;
+  chooseVariant: (group: Node, id: string) => void;
+};
+
+export function usePhyKeyboard(options: Options) {
+  return function keyHandler(event: KeyboardEvent) {
+    const target = event.target as HTMLElement | null;
+    if (
+      !options.pane.value?.contains(document.activeElement) ||
+      target?.closest("input,select,textarea,[contenteditable=true]")
+    ) {
+      return;
+    }
+    if (event.code === "Space") {
+      options.spaceHeld.value = true;
+      event.preventDefault();
+      return;
+    }
+    const action = resolveKey(event);
+    const control = event.ctrlKey || event.metaKey;
+    if (["undo", "redo", "save"].includes(action || "")) return;
+    if (action === "?" || event.key === "?") {
+      options.showHelp.value = true;
+      event.preventDefault();
+      return;
+    }
+    if (event.key === "Escape") {
+      if (options.showHelp.value || options.popover.value || options.confirm.value) {
+        options.showHelp.value = false;
+        options.popover.value = null;
+        options.confirm.value = null;
+      } else if (options.selected.value.length) {
+        options.selected.value = [];
+      } else if (options.focus.value) {
+        options.focus.value = options.parentId(options.focus.value);
+      }
+      event.preventDefault();
+      return;
+    }
+    if (event.key === "Enter" && options.confirm.value) {
+      options.deleteConfirmed();
+      event.preventDefault();
+      return;
+    }
+    if (
+      event.key === "Enter" &&
+      options.selected.value.length === 1 &&
+      ["cluster", "variantGroup"].includes(options.node(options.selected.value[0]!)?.type || "")
+    ) {
+      options.focusIn(options.selected.value[0]!);
+      return;
+    }
+    if (action === "fit") {
+      options.fit();
+      return;
+    }
+    if (action === "selection-fit") {
+      options.fitSelected();
+      return;
+    }
+    if (options.mismatch()) return;
+    if (action === "group" && control) {
+      event.preventDefault();
+      options.makeCluster();
+      return;
+    }
+    if (action === "ungroup" && control) {
+      event.preventDefault();
+      options.ungroup();
+      return;
+    }
+    if (action === "d" && control) {
+      event.preventDefault();
+      options.duplicate();
+      return;
+    }
+    if (action === "a" && control) {
+      event.preventDefault();
+      const container = options.selected.value.length
+        ? options.selectedContainer(options.selected.value[0]!)
+        : options.insertionParent();
+      options.selected.value = options.nodesInContainer(container).map((node) => node.id);
+      return;
+    }
+    if (event.key === "Insert") {
+      event.preventDefault();
+      options.keyAdd();
+      return;
+    }
+    if (event.key === "Delete" || event.key === "Backspace") {
+      event.preventDefault();
+      options.askDelete();
+      return;
+    }
+    if (event.key === "g" || event.key === "G") {
+      options.grid.value = nextGrid(options.grid.value, event.shiftKey ? -1 : 1);
+      return;
+    }
+    if (event.key === "+" || event.key === "=") {
+      options.zoom.value *= 1.15;
+      return;
+    }
+    if (event.key === "-") {
+      options.zoom.value /= 1.15;
+      return;
+    }
+    if (event.key === "Tab") {
+      const container = options.selected.value.length
+        ? options.selectedContainer(options.selected.value[0]!)
+        : options.insertionParent();
+      const siblings = options.nodesInContainer(container);
+      const ordered = tabOrder(siblings.map(options.tabItem));
+      const index = ordered.findIndex((node) => node.id === options.selected.value[0]);
+      const next = (index + (event.shiftKey ? -1 : 1) + ordered.length) % ordered.length;
+      if (ordered[next]) options.selected.value = [ordered[next]!.id];
+      event.preventDefault();
+      return;
+    }
+    if (event.altKey && event.key === "ArrowUp") {
+      const id = options.selected.value[0];
+      const parent = id ? options.parentId(id) : null;
+      if (id && parent) {
+        options.priorChild.set(parent, id);
+        options.selected.value = [parent];
+      }
+      event.preventDefault();
+      return;
+    }
+    if (event.altKey && event.key === "ArrowDown") {
+      const id = options.selected.value[0];
+      const children = id ? options.directChildren(id) : [];
+      const back = id ? options.priorChild.get(id) : undefined;
+      const next = children.some((child) => child.id === back)
+        ? back
+        : tabOrder(children.map(options.tabItem))[0]?.id;
+      if (next) options.selected.value = [next];
+      event.preventDefault();
+      return;
+    }
+    if (event.key.startsWith("Arrow")) {
+      const ids = options.selected.value;
+      if (!ids.length) return;
+      event.preventDefault();
+      let phy = options.project().phy;
+      for (const id of ids) {
+        const node = options.node(id);
+        if (!node) continue;
+        if (event.shiftKey) {
+          if (node.type !== "key") continue;
+          const size = { ...node.size };
+          if (event.key === "ArrowRight") size.w = Math.max(0.25, size.w + 0.25);
+          if (event.key === "ArrowDown") size.h = Math.max(0.25, size.h + 0.25);
+          if (event.key === "ArrowLeft") size.w = Math.max(0.25, size.w - 0.25);
+          if (event.key === "ArrowUp") size.h = Math.max(0.25, size.h - 0.25);
+          phy = resizeKey(phy, id, size);
+        } else {
+          const delta =
+            event.key === "ArrowLeft"
+              ? [-options.grid.value, 0]
+              : event.key === "ArrowRight"
+                ? [options.grid.value, 0]
+                : event.key === "ArrowUp"
+                  ? [0, -options.grid.value]
+                  : [0, options.grid.value];
+          phy = moveNode(phy, id, delta[0]!, delta[1]!);
+        }
+      }
+      options.dispatch(event.shiftKey ? "サイズ" : "移動", (project) => ({ ...project, phy }));
+      return;
+    }
+    if (event.key === "PageUp" || event.key === "PageDown") {
+      const ids = options.selected.value;
+      if (ids.length) {
+        const delta = event.key === "PageUp" ? 15 : -15;
+        options.dispatch("回転", (project) => ({
+          ...project,
+          phy: ids.reduce((phy, id) => rotateNode(phy, id, delta), project.phy),
+        }));
+      }
+      return;
+    }
+    if (event.key.toLowerCase() === "r") {
+      const ids = options.selected.value.filter((id) => options.node(id)?.type === "key");
+      if (ids.length) {
+        const delta = event.shiftKey ? -90 : 90;
+        options.dispatch("向き変更", (project) => {
+          const copy = structuredClone(project);
+          for (const id of ids) {
+            const node = options.allNodes(copy.phy.root).find((item) => item.id === id);
+            if (node?.type === "key") {
+              node.orientation = (((node.orientation || 0) + delta + 360) % 360) as KeyNode["orientation"];
+            }
+          }
+          return copy;
+        });
+      }
+      return;
+    }
+    if (event.key.toLowerCase() === "v" && options.selected.value.length === 1) {
+      const group = options.node(options.selected.value[0]!);
+      if (group?.type === "variantGroup") {
+        const index = group.children.findIndex(
+          (variant) => variant.id === (options.variants.value[group.id] || group.default),
+        );
+        const variant =
+          group.children[(index + (event.shiftKey ? -1 : 1) + group.children.length) % group.children.length];
+        if (variant) options.chooseVariant(group, variant.id);
+      }
+      return;
+    }
+    if (event.key === "F2") {
+      (document.querySelector(".properties input") as HTMLInputElement | null)?.focus();
+      event.preventDefault();
+    }
+  };
+}

mock/src/ui/phy/usePhyLongPress.ts

@@ -0,0 +1,133 @@
+import { ref } from "vue";
+
+export type HoldMode = "loop" | "list";
+
+// feedback「長押しでの選択の切り替え」で 500ms / 450ms は早いとされたため延ばす。
+export const HOLD_DELAY = 600;
+export const HOLD_INTERVAL = 1000;
+
+type Options = {
+  parentLabel: (id: string | null) => string;
+  pressTargets: (id: string) => string[];
+  mode: () => HoldMode;
+};
+
+export type LongPressPick = { id: string; shift: boolean };
+
+// キーの長押しで、キー → 親 → … の順に選択先を巡回する。
+// loop: 巡回だけで選び、長押し後に動かすと選んだ先をドラッグする。
+// list: 巡回は同じだが、ポインタがリストに入ると巡回をやめ、指している行を離した時点で選ぶ。ドラッグはしない。
+// ポインタの扱い(ドラッグ・クリック)は呼び出し側が持ち、ここは候補と表示だけを持つ。
+export function usePhyLongPress(options: Options) {
+  const open = ref(false);
+  const mode = ref<HoldMode>("loop");
+  const pos = ref({ x: 0, y: 0 });
+  const candidates = ref<string[]>([]);
+  const names = ref<string[]>([]);
+  const index = ref(0);
+  // 巡回が進むたびに増やし、インジケータのアニメーションをやり直させる
+  const step = ref(0);
+  // list 方式で、ポインタがリストに入ったあと
+  const pointing = ref(false);
+  let timer: number | undefined;
+  let cycle: number | undefined;
+  let shift = false;
+  let activated = false;
+
+  function reset() {
+    activated = false;
+  }
+
+  function stopCycle() {
+    if (cycle) window.clearInterval(cycle);
+    cycle = undefined;
+  }
+
+  function start(event: PointerEvent, keyId: string) {
+    candidates.value = options.pressTargets(keyId);
+    index.value = 0;
+    shift = event.shiftKey;
+    timer = window.setTimeout(() => {
+      timer = undefined;
+      if (candidates.value.length <= 1) return;
+      activated = true;
+      mode.value = options.mode();
+      names.value = candidates.value.map((id, i) => (i === 0 ? "キー" : options.parentLabel(id)));
+      index.value = 1;
+      step.value++;
+      pointing.value = false;
+      pos.value = { x: event.clientX, y: event.clientY };
+      open.value = true;
+      cycle = window.setInterval(() => {
+        index.value = (index.value + 1) % candidates.value.length;
+        step.value++;
+      }, HOLD_INTERVAL);
+    }, HOLD_DELAY);
+  }
+
+  function cycling() {
+    return open.value && mode.value === "loop";
+  }
+
+  function picking() {
+    return open.value && mode.value === "list";
+  }
+
+  // list 方式: ポインタの下にあるリストの行を指す。リストの外では直前の状態を保つ。
+  function point(clientX: number, clientY: number) {
+    const row = document
+      .elementsFromPoint(clientX, clientY)
+      .find((element) => element instanceof HTMLElement && element.dataset.holdIndex !== undefined);
+    if (!(row instanceof HTMLElement)) return;
+    stopCycle();
+    pointing.value = true;
+    index.value = Number(row.dataset.holdIndex);
+  }
+
+  function cancelPending() {
+    if (timer && !open.value) {
+      window.clearTimeout(timer);
+      timer = undefined;
+    }
+  }
+
+  function take(): LongPressPick {
+    const id = candidates.value[index.value]!;
+    stopCycle();
+    open.value = false;
+    return { id, shift };
+  }
+
+  function finish(): LongPressPick | null {
+    if (timer) window.clearTimeout(timer);
+    timer = undefined;
+    stopCycle();
+    const id = open.value ? candidates.value[index.value] : undefined;
+    open.value = false;
+    return id ? { id, shift } : null;
+  }
+
+  function wasActivated() {
+    return activated;
+  }
+
+  return {
+    open,
+    mode,
+    pos,
+    candidates,
+    names,
+    index,
+    step,
+    pointing,
+    reset,
+    start,
+    cycling,
+    picking,
+    point,
+    cancelPending,
+    take,
+    finish,
+    wasActivated,
+  };
+}

mock/src/ui/phy/usePhyTreeModel.ts

@@ -0,0 +1,76 @@
+import type { Ref } from "vue";
+import type { ProjectFile } from "../../domain/project";
+import type { Node } from "../../domain/phy";
+import { longPressColumn, treeIndex, treeNodes } from "./logic";
+
+export function usePhyTreeModel(project: () => ProjectFile, focus: Ref<string | null>) {
+  function allNodes(nodes = project().phy.root): Node[] {
+    return treeNodes(nodes);
+  }
+
+  function node(id: string): Node | undefined {
+    return treeIndex(project().phy.root).nodes.get(id);
+  }
+
+  function parentId(id: string): string | null {
+    return treeIndex(project().phy.root).selectableParent(id);
+  }
+
+  function isAncestor(candidate: string, id: string): boolean {
+    let parent = parentId(id);
+    while (parent) {
+      if (parent === candidate) return true;
+      parent = parentId(parent);
+    }
+    return false;
+  }
+
+  function selectedContainer(id: string): string | null {
+    return treeIndex(project().phy.root).insertionContainer(id);
+  }
+
+  function groupForVariant(id: string): string | null {
+    return treeIndex(project().phy.root).groupForVariant(id);
+  }
+
+  function parentLabel(id: string | null): string {
+    if (!id) return "root";
+    const item = node(id);
+    if (item?.type === "variantGroup") return item.name;
+    if (item?.type === "cluster") return item.name || "クラスター";
+    const variant = allNodes()
+      .flatMap((item) => (item.type === "variantGroup" ? item.children : []))
+      .find((item) => item.id === id);
+    return variant?.name || id;
+  }
+
+  function pressTargets(id: string): string[] {
+    const ancestors: string[] = [];
+    let parent = parentId(id);
+    while (parent) {
+      const group = allNodes().find(
+        (item) => item.type === "variantGroup" && item.children.some((variant) => variant.id === parent),
+      );
+      if (group) {
+        ancestors.push(group.id);
+        parent = parentId(group.id);
+      } else {
+        ancestors.push(parent);
+        parent = parentId(parent);
+      }
+      if (ancestors.at(-1) === focus.value) break;
+    }
+    return longPressColumn(id, ancestors, focus.value || undefined);
+  }
+
+  return {
+    allNodes,
+    node,
+    parentId,
+    isAncestor,
+    selectedContainer,
+    groupForVariant,
+    parentLabel,
+    pressTargets,
+  };
+}

mock/src/ui/phy/usePhyViewport.ts

@@ -0,0 +1,73 @@
+import { onMounted, onUnmounted, type Ref } from "vue";
+import type { ProjectFile } from "../../domain/project";
+import type { Node } from "../../domain/phy";
+import { fitViewport, zoomAround } from "./viewport";
+import { localBounds } from "./logic";
+
+type Options = {
+  project: () => ProjectFile;
+  svg: Ref<SVGSVGElement | undefined>;
+  size: Ref<{ w: number; h: number }>;
+  zoom: Ref<number>;
+  pan: Ref<{ x: number; y: number }>;
+  selected: Ref<string[]>;
+  variants: Ref<Record<string, string>>;
+  node: (id: string) => Node | undefined;
+};
+
+export function usePhyViewport(options: Options) {
+  let observer: ResizeObserver | null = null;
+
+  function fit() {
+    const bounds = localBounds(options.project().phy.root, options.variants.value);
+    const viewport = fitViewport(bounds, options.size.value.w, options.size.value.h);
+    options.zoom.value = viewport.zoom;
+    options.pan.value = viewport.pan;
+  }
+
+  function fitSelected() {
+    const nodes = options.selected.value
+      .map((id) => options.node(id))
+      .filter((node): node is Node => node !== undefined);
+    if (!nodes.length) return;
+    const bounds = localBounds(nodes, options.variants.value);
+    const viewport = fitViewport(bounds, options.size.value.w, options.size.value.h);
+    options.zoom.value = viewport.zoom;
+    options.pan.value = viewport.pan;
+  }
+
+  function localPoint(element: SVGSVGElement | SVGGElement, x: number, y: number) {
+    const transform = element.getScreenCTM();
+    if (!transform) return { x: 0, y: 0 };
+    const point = new DOMPoint(x, y).matrixTransform(transform.inverse());
+    return { x: point.x, y: point.y };
+  }
+
+  function wheel(event: WheelEvent) {
+    const svg = options.svg.value;
+    if (!svg) return;
+    const point = localPoint(svg, event.clientX, event.clientY);
+    const viewport = zoomAround(
+      point,
+      { zoom: options.zoom.value, pan: options.pan.value },
+      Math.exp(-event.deltaY * 0.001),
+    );
+    options.zoom.value = viewport.zoom;
+    options.pan.value = viewport.pan;
+  }
+
+  onMounted(() => {
+    if (!options.svg.value) return;
+    // viewBox はSVG自身の大きさに合わせる。ペインにはツールバーも入り、折り返すと高さがずれる
+    observer = new ResizeObserver((entries) => {
+      const rect = entries[0]!.contentRect;
+      options.size.value = { w: rect.width, h: rect.height };
+      fit();
+    });
+    observer.observe(options.svg.value);
+    fit();
+  });
+  onUnmounted(() => observer?.disconnect());
+
+  return { fit, fitSelected, localPoint, wheel };
+}

mock/src/ui/phy/viewport.ts

@@ -0,0 +1,66 @@
+export type Viewport = { zoom: number; pan: { x: number; y: number } };
+export type ViewBounds = { x: number; y: number; width: number; height: number };
+
+/** SVG画面端に近いほど強く、端の外では上限に達する自動パン速度(px/秒)。 */
+export function autoPanVelocity(
+  point: { x: number; y: number },
+  bounds: ViewBounds,
+  edge = 32,
+  maxSpeed = 480,
+): { x: number; y: number } {
+  const axis = (position: number, start: number, length: number) => {
+    const fromStart = position - start;
+    const fromEnd = start + length - position;
+    if (fromStart < edge) return -maxSpeed * Math.min(1, (edge - fromStart) / edge);
+    if (fromEnd < edge) return maxSpeed * Math.min(1, (edge - fromEnd) / edge);
+    return 0;
+  };
+  return {
+    x: axis(point.x, bounds.x, bounds.width),
+    y: axis(point.y, bounds.y, bounds.height),
+  };
+}
+
+/** 境界を余白付きで中央へ収める。座標・倍率だけを扱う純粋関数。 */
+export function fitViewport(
+  bounds: ViewBounds,
+  width: number,
+  height: number,
+  padding = 40,
+  minZoom = 8,
+  maxZoom = 160,
+): Viewport {
+  const zoom = Math.max(
+    minZoom,
+    Math.min(
+      maxZoom,
+      Math.min(
+        (width - 2 * padding) / Math.max(bounds.width, 1),
+        (height - 2 * padding) / Math.max(bounds.height, 1),
+      ),
+    ),
+  );
+  return {
+    zoom,
+    pan: {
+      x: (width - (2 * bounds.x + bounds.width) * zoom) / 2,
+      y: (height - (2 * bounds.y + bounds.height) * zoom) / 2,
+    },
+  };
+}
+
+/** 指定した画面座標の下にある点を保ったまま倍率を変える。 */
+export function zoomAround(
+  point: { x: number; y: number },
+  viewport: Viewport,
+  factor: number,
+  minZoom = 5,
+  maxZoom = 200,
+): Viewport {
+  const zoom = Math.max(minZoom, Math.min(maxZoom, viewport.zoom * factor));
+  const world = {
+    x: (point.x - viewport.pan.x) / viewport.zoom,
+    y: (point.y - viewport.pan.y) / viewport.zoom,
+  };
+  return { zoom, pan: { x: point.x - world.x * zoom, y: point.y - world.y * zoom } };
+}

mock/src/ui/types.ts

@@ -0,0 +1,2 @@
+import type { ProjectFile } from "../domain/project";
+export type Dispatch = (label: string, update: (project: ProjectFile) => ProjectFile) => void;

mock/tests/domain.test.ts

@@ -0,0 +1,275 @@
+import { describe, expect, it } from "vitest";
+import { readFileSync } from "node:fs";
+import { createProjectFromKle } from "../src/domain/project";
+import { saveProject, loadProject } from "../src/io/projectFile";
+import { validateSchema } from "../src/io/validateSchema";
+import { appendKeys, unregisteredKeys } from "../src/domain/idx";
+import { assignKey, isEditableKeycode, parseKeycode, renameLayer, deleteLayer } from "../src/domain/map";
+import { getKeycodeLabel } from "../src/domain/keycodeLabels";
+import { qmkBasicKeycodes } from "../src/domain/qmkBasicKeycodes";
+import { generateMockTarget } from "../src/domain/generator";
+import { deleteNodeCascade } from "../src/domain/deleteCascade";
+import { ProjectHistory } from "../src/domain/history";
+import { validateProject } from "../src/domain/validate";
+import { mcuPinCandidates } from "../src/domain/elc";
+const kle = JSON.parse(
+  readFileSync(new URL("../../samples/kle/macropad-4x4.json", import.meta.url), "utf8"),
+) as unknown;
+const gen = (() => {
+  let i = 0;
+  return () => `${String(++i).padStart(8, "0")}-0000-4000-8000-000000000000`;
+})();
+describe("domain project flow", () => {
+  it("supports QMK basic keycode names and aliases while preserving entered spelling", async () => {
+    const editable = [
+      "KC_ENT",
+      "KC_ENTER",
+      "KC_ESCAPE",
+      "KC_ESC",
+      "KC_P0",
+      "KC_KP_0",
+      "KC_LCTL",
+      "KC_LEFT_CTRL",
+      "KC_INT1",
+      "KC_LNG1",
+    ];
+    for (const code of editable) expect(isEditableKeycode(code), code).toBe(true);
+
+    const formalNames = qmkBasicKeycodes.filter((entry) => entry.group !== "internal");
+    expect(formalNames.length).toBeGreaterThanOrEqual(100);
+    const p = await createProjectFromKle(kle, { idGenerator: gen });
+    const keyId = p.idx.order[0]!;
+    for (const code of editable) {
+      p.map = assignKey(p.map, "Base", keyId, code);
+      expect(p.map.layers[0]!.keymap[0]!.keycode).toBe(code);
+    }
+    p.map = assignKey(p.map, "Base", keyId, "LCTL(KC_ENT)");
+    expect(isEditableKeycode("LCTL(KC_ENT)")).toBe(true);
+    p.map.layers.push({ name: "Nav", keymap: [] });
+    p.map = assignKey(p.map, "Base", keyId, "LT(Nav, KC_LNG1)");
+    expect(isEditableKeycode("LT(Nav, KC_LNG1)")).toBe(true);
+    p.map = assignKey(p.map, "Base", keyId, "KC_P0");
+    const roundTrip = await loadProject((await saveProject(p)).json!);
+    expect(roundTrip.project!.map.layers[0]!.keymap[0]!.keycode).toBe("KC_P0");
+
+    for (const code of ["KC_NO", "XXXXXXX", "KC_TRANSPARENT", "KC_TRNS", "_______"]) {
+      expect(isEditableKeycode(code), code).toBe(true);
+      p.map = assignKey(p.map, "Base", keyId, code);
+      expect(p.map.layers[0]!.keymap[0]!.keycode).toBe(code);
+    }
+
+    for (const code of ["KC_FOO", "QK_BOOT"]) {
+      expect(parseKeycode(code).kind).toBe("unknown");
+      expect(isEditableKeycode(code)).toBe(false);
+      expect(() => assignKey(p.map, "Base", keyId, code)).toThrow();
+    }
+    p.map.layers[0]!.keymap[0]!.keycode = "KC_FOO";
+    expect(p.map.layers[0]!.keymap[0]!.keycode).toBe("KC_FOO");
+
+    expect(getKeycodeLabel("KC_A")).toBe("A");
+    expect(getKeycodeLabel("KC_ENTER")).toBe("Enter");
+    expect(getKeycodeLabel("KC_ENT")).toBe("Enter");
+    expect(getKeycodeLabel("KC_ESCAPE")).toBe("Escape");
+    expect(getKeycodeLabel("KC_ESC")).toBe("Escape");
+  });
+  it("imports KLE, saves, reloads and validates schemas", async () => {
+    const p = await createProjectFromKle(kle, { idGenerator: gen });
+    const saved = await saveProject(p);
+    expect(saved.errors.some((issue) => issue.severity === "blocksSave")).toBe(false);
+    const loaded = await loadProject(saved.json!);
+    expect(loaded.errors.filter((x) => x.severity === "blocksSave")).toEqual([]);
+    expect(JSON.stringify(loaded.project)).toBe(JSON.stringify(p));
+    for (const l of ["phy", "idx", "elc", "map"] as const) expect(validateSchema(l, p[l])).toEqual([]);
+  });
+  it("preserves unknown data and IDX order", async () => {
+    const p = await createProjectFromKle(kle, { idGenerator: gen });
+    p.extra = { x: 1 };
+    (p.phy as typeof p.phy & { extraPhy: boolean }).extraPhy = true;
+    p.idx.extraIdx = true;
+    p.elc.extraElc = true;
+    p.map.extraMap = true;
+    const q = (await loadProject((await saveProject(p)).json!)).project!;
+    expect(q.extra).toEqual({ x: 1 });
+    expect((q.phy as typeof q.phy & { extraPhy: boolean }).extraPhy).toBe(true);
+    expect(q.idx.extraIdx).toBe(true);
+    expect(q.elc.extraElc).toBe(true);
+    expect(q.map.extraMap).toBe(true);
+    expect(unregisteredKeys(q.phy, appendKeys(q.idx, []))).toEqual([]);
+  });
+  it("supports MAP layer reference changes, duplicate checks and safe parsing", async () => {
+    const p = await createProjectFromKle(kle, { idGenerator: gen });
+    p.map.layers.push({ name: "Nav", keymap: [] });
+    p.map = assignKey(p.map, "Base", p.idx.order[0]!, "MO(Nav)");
+    p.map = assignKey(p.map, "Base", p.idx.order[1]!, "LT(Nav, KC_SPC)");
+    p.map = renameLayer(p.map, "Nav", "Fn");
+    expect(p.map.layers[0]!.keymap.map((x) => x.keycode)).toEqual(["MO(Fn)", "LT(Fn, KC_SPC)"]);
+    expect(parseKeycode("MO(Fn)").layer).toBe("Fn");
+    expect(() => deleteLayer(p.map, "Fn")).toThrow();
+    p.map.layers[0]!.keymap.push({ ...p.map.layers[0]!.keymap[0]! });
+    expect(validateProject(p).some((x) => x.code === "duplicate-map-key")).toBe(true);
+  });
+  it("generates ordered matrix/keymap previews and cascades deletion", async () => {
+    const p = await createProjectFromKle(kle, { idGenerator: gen });
+    const ids = p.idx.order;
+    p.output.matrix = {
+      rowPins: ["m.GP0", "m.GP1", "m.GP2", "m.GP3"],
+      colPins: ["m.GP4", "m.GP5", "m.GP6", "m.GP7"],
+    };
+    p.elc.providers.push({ id: "m", kind: "mcu", part: "RP2040" });
+    p.elc.ledChains = [{ id: "chain", data: "m.GP8", order: [ids[0]!, ids[1]!] }];
+    p.map.layers[0]!.keymap = ids.map((keyId, i) => ({ keyId, keycode: `KC_${i % 10}` }));
+    p.elc.keys = ids.map((key, i) => ({
+      key,
+      detect: "contact",
+      terminals: { a: `m.GP${Math.floor(i / 4)}`, b: `m.GP${4 + (i % 4)}` },
+      diode: "b-to-a",
+    }));
+    const out = generateMockTarget(p);
+    expect(out.errors).toEqual([]);
+    expect(out.target?.idx).toEqual(ids);
+    expect(out.target?.matrix.rows.slice(0, 5)).toEqual([0, 0, 0, 0, 1]);
+    expect(out.target?.matrix.cols.slice(0, 5)).toEqual([0, 1, 2, 3, 0]);
+    expect(out.target?.keymaps[0]!.keycodes).toHaveLength(16);
+    const q = deleteNodeCascade(p, ids[0]!);
+    expect(q.idx.order).not.toContain(ids[0]);
+    expect(q.elc.keys.some((x) => x.key === ids[0])).toBe(false);
+    expect(q.elc.ledChains?.[0]?.order).not.toContain(ids[0]);
+    expect(q.map.layers[0]!.keymap.some((x) => x.keyId === ids[0])).toBe(false);
+  });
+  it("groups history edits", async () => {
+    const p = await createProjectFromKle(kle, { idGenerator: gen }),
+      h = new ProjectHistory(p);
+    const q = structuredClone(p);
+    q.phy.metadata.name = "drag";
+    h.begin();
+    h.push(q);
+    h.replaceTop(q);
+    h.commit(q);
+    expect(h.canUndo).toBe(true);
+    expect(h.undo().phy.metadata.name).toBe(p.phy.metadata.name);
+    expect(h.redo().phy.metadata.name).toBe("drag");
+  });
+  it("does not add a history step for an unchanged snapshot", async () => {
+    const p = await createProjectFromKle(kle, { idGenerator: gen }),
+      h = new ProjectHistory(p);
+    const q = structuredClone(p);
+    q.phy.metadata.name = "edit";
+    h.push(q);
+    h.push(structuredClone(q));
+    expect(h.undo().phy.metadata.name).toBe(p.phy.metadata.name);
+    expect(h.canUndo).toBe(false);
+  });
+  it("imports the VIA geometry sample", async () => {
+    const via = JSON.parse(
+      readFileSync(new URL("../../samples/via/cr0wn60.json", import.meta.url), "utf8"),
+    ) as unknown;
+    const p = await createProjectFromKle(via, { idGenerator: gen });
+    expect(validateSchema("phy", p.phy)).toEqual([]);
+  });
+  it("detects T-25 collisions and permits reversed diode pairs and exclusive variants", async () => {
+    const p = await createProjectFromKle(kle, { idGenerator: gen });
+    const ids = p.idx.order.slice(0, 2);
+    p.phy.root = p.phy.root.filter((n) => n.type === "key" && ids.includes(n.id));
+    p.idx.order = ids;
+    p.elc.providers = [{ id: "m", kind: "mcu", part: "RP2040" }];
+    p.elc.keys = [
+      { key: ids[0]!, detect: "contact", terminals: { a: "m.GP0", b: "m.GP1" } },
+      { key: ids[1]!, detect: "contact", terminals: { a: "m.GP1", b: "m.GP0" } },
+    ];
+    expect(validateProject(p).some((x) => x.code === "wiring-collision")).toBe(true);
+    p.elc.keys = [
+      { key: ids[0]!, detect: "contact", terminals: { a: "m.GP0", b: "m.GP1" }, diode: "b-to-a" },
+      { key: ids[1]!, detect: "contact", terminals: { a: "m.GP1", b: "m.GP0" }, diode: "b-to-a" },
+    ];
+    expect(validateProject(p).some((x) => x.code === "wiring-collision")).toBe(false);
+    p.elc.keys = [
+      { key: ids[0]!, detect: "contact", terminals: { a: "m.GP0", b: "m.GP1" } },
+      { key: ids[1]!, detect: "contact", terminals: { a: "m.GP0", b: "m.GP1" } },
+    ];
+    expect(validateProject(p).some((x) => x.code === "wiring-collision")).toBe(true);
+    p.elc.keys = [
+      { key: ids[0]!, detect: "contact", terminals: { a: "m.GP0", b: "m.GP1" }, diode: "a-to-b" },
+      { key: ids[1]!, detect: "contact", terminals: { a: "m.GP1", b: "m.GP0" } },
+    ];
+    expect(validateProject(p).some((x) => x.code === "wiring-collision")).toBe(true);
+    const a = p.phy.root[0]!,
+      b = p.phy.root[1]!;
+    p.phy.root = [
+      {
+        type: "variantGroup",
+        id: "vg",
+        name: "Choice",
+        transform: { x: 0, y: 0, rotation: 0 },
+        default: "va",
+        children: [
+          { type: "variant", id: "va", name: "A", children: [a] },
+          { type: "variant", id: "vb", name: "B", children: [b] },
+        ],
+      },
+    ];
+    expect(validateProject(p).some((x) => x.code === "wiring-collision")).toBe(false);
+    expect(mcuPinCandidates(p.elc.providers[0] as { id: string; kind: "mcu"; part: string })).toHaveLength(
+      30,
+    );
+  });
+  it("filters variant output without rewriting stored IDX order", async () => {
+    const p = await createProjectFromKle(kle, { idGenerator: gen });
+    const ids = p.idx.order.slice(0, 2);
+    p.phy.root = [
+      {
+        type: "variantGroup",
+        id: "vgx",
+        name: "Choice",
+        transform: { x: 0, y: 0, rotation: 0 },
+        default: "vax",
+        children: [
+          {
+            type: "variant",
+            id: "vax",
+            name: "A",
+            children: [
+              {
+                type: "key",
+                id: ids[0]!,
+                profile: "default",
+                transform: { x: 0, y: 0, rotation: 0 },
+                size: { w: 1, h: 1 },
+              },
+            ],
+          },
+          {
+            type: "variant",
+            id: "vbx",
+            name: "B",
+            children: [
+              {
+                type: "key",
+                id: ids[1]!,
+                profile: "default",
+                transform: { x: 1, y: 0, rotation: 0 },
+                size: { w: 1, h: 1 },
+              },
+            ],
+          },
+        ],
+      },
+    ];
+    p.output.variantSelection = { vgx: "vax" };
+    p.idx.order = ids;
+    p.elc.providers = [{ id: "m", kind: "mcu", part: "RP2040" }];
+    p.output.matrix = { rowPins: ["m.GP0"], colPins: ["m.GP1"] };
+    p.elc.keys = ids.map((key) => ({
+      key,
+      detect: "contact",
+      terminals: { a: "m.GP0", b: "m.GP1" },
+      diode: "b-to-a",
+    }));
+    p.map.layers[0]!.keymap = ids.map((keyId) => ({ keyId, keycode: "KC_A" }));
+    let g = generateMockTarget(p);
+    expect(g.target?.idx).toEqual([ids[0]]);
+    p.output.variantSelection = { vgx: "vbx" };
+    g = generateMockTarget(p);
+    expect(g.target?.idx).toEqual([ids[1]]);
+    expect(p.idx.order).toEqual(ids);
+  });
+});

mock/tests/elcMatrix.test.ts

@@ -0,0 +1,42 @@
+import { describe, expect, it } from "vitest";
+import { createElc } from "../src/domain/elc";
+import { wireMatrixKeys } from "../src/domain/elcMatrix";
+
+describe("wireMatrixKeys", () => {
+  it("assigns row-major pins and diode without mutating source", () => {
+    const source = createElc({ source: "test", checksum: "" });
+    const next = wireMatrixKeys(
+      source,
+      ["k1", "k2", "k3"],
+      ["MCU.GP0", "MCU.GP1"],
+      ["MCU.GP2", "MCU.GP3"],
+      "a-to-b",
+    );
+    expect(next.keys.map((w) => w.detect === "contact" && [w.terminals.a, w.terminals.b, w.diode])).toEqual([
+      ["MCU.GP0", "MCU.GP2", "a-to-b"],
+      ["MCU.GP0", "MCU.GP3", "a-to-b"],
+      ["MCU.GP1", "MCU.GP2", "a-to-b"],
+    ]);
+    expect(source.keys).toEqual([]);
+  });
+  it("rejects an undersized matrix", () => {
+    expect(() =>
+      wireMatrixKeys(createElc({ source: "test", checksum: "" }), ["a", "b"], ["R"], ["C"]),
+    ).toThrow();
+  });
+  it("preserves extension fields when updating existing wiring", () => {
+    const source = {
+      ...createElc({ source: "test", checksum: "" }),
+      keys: [
+        {
+          key: "k1",
+          detect: "contact" as const,
+          terminals: { a: "OLD.R", b: "OLD.C" },
+          extension: "keep",
+        },
+      ],
+    };
+    const next = wireMatrixKeys(source, ["k1"], ["R"], ["C"]);
+    expect(next.keys[0]).toMatchObject({ extension: "keep", terminals: { a: "R", b: "C" } });
+  });
+});

mock/tests/idxEdit.test.ts

@@ -0,0 +1,322 @@
+import { describe, expect, it } from "vitest";
+import { readFileSync } from "node:fs";
+import {
+  insertAtGap,
+  insertNextTo,
+  keyVariantGroups,
+  orderSegments,
+  renumber,
+  swapKeys,
+} from "../src/domain/idxOrder";
+import type { OrderContext } from "../src/domain/idxOrder";
+import {
+  assignLines,
+  keyRect,
+  matrixSequence,
+  scanKeys,
+  splitHalves,
+  type ScanOptions,
+} from "../src/domain/idxScan";
+import { matchPlacements } from "../src/domain/idxImport";
+import { readLayoutPlacements } from "../src/io/layoutImport";
+import { importKle } from "../src/io/kleImport";
+import { flattenKeys } from "../src/domain/geometry";
+import type { KeyRect } from "../src/domain/rows";
+import type { FlatKey, PhyFile } from "../src/domain/phy";
+
+const sample = (path: string) =>
+  JSON.parse(readFileSync(new URL(`../../samples/${path}`, import.meta.url), "utf8")) as unknown;
+const gen = () => {
+  let i = 0;
+  return () => `${String(++i).padStart(8, "0")}-0000-4000-8000-000000000000`;
+};
+
+/** Context where `hidden` keys are in group g (with every `grouped` visible key) and the rest are common. */
+const ctx = (visible: string[], grouped: string[] = []): OrderContext => ({
+  visible: new Set(visible),
+  groups: new Map(grouped.map((id) => [id, ["g"]])),
+});
+
+describe("IDX order editing", () => {
+  it("keeps the ISO Enter next to the ANSI Enter when inserting after it", () => {
+    // a = ANSI Enter (shown), h = ISO Enter (hidden), b = common key
+    const c = ctx(["a", "b", "x"], ["a", "h"]);
+    expect(orderSegments(["a", "h", "b"], c)).toEqual([["a", "h"], ["b"]]);
+    expect(insertNextTo(["a", "h", "b", "x"], c, "x", "a", true)).toEqual(["a", "h", "x", "b"]);
+    expect(insertNextTo(["a", "h", "b", "x"], c, "x", "b", false)).toEqual(["a", "h", "x", "b"]);
+  });
+
+  it("attaches hidden keys forward only to a key sharing their group", () => {
+    const c = ctx(["p", "q"], ["h1", "h2", "q"]);
+    expect(orderSegments(["p", "h1", "h2", "q"], c)).toEqual([["p"], ["h1", "h2", "q"]]);
+    // shares with neither: stays with the key before
+    expect(orderSegments(["p", "z", "q"], ctx(["p", "q"]))).toEqual([["p", "z"], ["q"]]);
+    // shares with both: stays with the key before
+    expect(orderSegments(["p", "h", "q"], ctx(["p", "q"], ["p", "h", "q"]))).toEqual([["p", "h"], ["q"]]);
+    // once a hidden key goes forward, the rest of the run follows to keep the order
+    const mixed = {
+      visible: new Set(["p", "q"]),
+      groups: new Map([
+        ["h1", ["g"]],
+        ["q", ["g"]],
+        ["h2", ["k"]],
+        ["p", ["k"]],
+      ]),
+    };
+    expect(orderSegments(["p", "h1", "h2", "q"], mixed)).toEqual([["p"], ["h1", "h2", "q"]]);
+    // leading hidden keys attach to the first visible key, trailing ones to the last
+    expect(orderSegments(["z", "p", "q", "y"], ctx(["p", "q"]))).toEqual([
+      ["z", "p"],
+      ["q", "y"],
+    ]);
+    expect(orderSegments(["z"], ctx([]))).toEqual([]);
+  });
+
+  it("moves a key between two others like a list move", () => {
+    const c = ctx(["k0", "k1", "k2", "k3", "k4", "k5"]);
+    const order = ["k0", "k1", "k2", "k3", "k4", "k5"];
+    // n = 4 dropped between i = 1 and i + 1 = 2: lands on 2, 2..3 shift back
+    expect(insertNextTo(order, c, "k4", "k1", true)).toEqual(["k0", "k1", "k4", "k2", "k3", "k5"]);
+    expect(insertNextTo(order, c, "k4", "k2", false)).toEqual(["k0", "k1", "k4", "k2", "k3", "k5"]);
+    // n = 1 dropped between i = 3 and 4: lands on 3, 2..3 shift forward
+    expect(insertNextTo(order, c, "k1", "k3", true)).toEqual(["k0", "k2", "k3", "k1", "k4", "k5"]);
+    expect(insertNextTo(order, c, "k1", "k4", false)).toEqual(["k0", "k2", "k3", "k1", "k4", "k5"]);
+    expect(insertNextTo(order, c, "k1", "k1", true)).toEqual(order);
+    expect(insertAtGap(order, c, "k0", 99)).toEqual(["k1", "k2", "k3", "k4", "k5", "k0"]);
+  });
+
+  it("leaves hidden keys in place when their visible key moves away", () => {
+    const c = ctx(["a", "b", "c"], ["a", "h"]);
+    expect(insertNextTo(["a", "h", "b", "c"], c, "a", "c", true)).toEqual(["h", "b", "c", "a"]);
+  });
+
+  it("registers an unregistered key at the drop position", () => {
+    const c = ctx(["a", "b", "new"]);
+    expect(insertNextTo(["a", "b"], c, "new", "b", false)).toEqual(["a", "new", "b"]);
+  });
+
+  it("swaps only the two keys", () => {
+    expect(swapKeys(["a", "h", "b", "c"], "a", "c")).toEqual(["c", "h", "b", "a"]);
+    expect(() => swapKeys(["a"], "a", "zz")).toThrow();
+  });
+
+  it("renumbers a sequence from the position of its first key, moving attached hidden keys along", () => {
+    const c = ctx(["a", "b", "c", "d"], ["b", "h"]);
+    const order = ["a", "b", "h", "c", "d"];
+    expect(renumber(order, c, ["d", "b"])).toEqual(["a", "c", "d", "b", "h"]);
+    expect(renumber(order, c, ["b", "a"])).toEqual(["b", "h", "a", "c", "d"]);
+    expect(renumber(order, c, ["c", "a"])).toEqual(["b", "h", "c", "a", "d"]);
+    // unregistered keys are registered inside the block; an all-new sequence goes to the end
+    expect(renumber(["a", "b"], ctx(["a", "b", "n"]), ["n", "b"])).toEqual(["a", "n", "b"]);
+    expect(renumber(["a"], ctx(["a", "n"]), ["n"])).toEqual(["a", "n"]);
+  });
+
+  it("never duplicates or drops keys", () => {
+    const c = ctx(["a", "b", "c", "d"], ["a", "h1", "c", "h2"]);
+    const order = ["h1", "a", "b", "h2", "c", "d", "z"];
+    const hiddenOf = (o: string[]) => o.filter((id) => !c.visible.has(id));
+    const moved = renumber(order, c, ["d", "c", "b", "a"]);
+    expect([...moved].sort()).toEqual([...order].sort());
+    // hidden keys travel with their visible key here
+    expect(moved).toEqual(["d", "z", "h2", "c", "b", "h1", "a"]);
+    for (const r of [
+      insertNextTo(order, c, "a", "d", true),
+      insertNextTo(order, c, "d", "a", false),
+      swapKeys(order, "b", "d"),
+    ]) {
+      expect([...r].sort()).toEqual([...order].sort());
+      expect(hiddenOf(r)).toEqual(hiddenOf(order));
+    }
+  });
+
+  it("lists VariantGroup ancestors including nested groups", () => {
+    const { phy } = importKle(sample("kle/macropad-4x4.json"), { idGenerator: gen() });
+    const [a, b] = phy.root as Extract<PhyFile["root"][number], { type: "key" }>[];
+    const nested: PhyFile = {
+      ...phy,
+      root: [
+        {
+          type: "variantGroup",
+          id: "outer",
+          name: "o",
+          default: "v1",
+          transform: { x: 0, y: 0, rotation: 0 },
+          children: [
+            {
+              type: "variant",
+              id: "v1",
+              name: "1",
+              children: [
+                {
+                  type: "variantGroup",
+                  id: "inner",
+                  name: "i",
+                  default: "v2",
+                  transform: { x: 0, y: 0, rotation: 0 },
+                  children: [{ type: "variant", id: "v2", name: "2", children: [a!] }],
+                },
+              ],
+            },
+          ],
+        },
+        b!,
+      ],
+    };
+    const groups = keyVariantGroups(nested);
+    expect(groups.get(a!.id)).toEqual(["outer", "inner"]);
+    expect(groups.get(b!.id)).toEqual([]);
+  });
+});
+
+const r = (id: string, x: number, y: number, w = 1, h = 1): KeyRect => ({ id, x, y, w, h });
+const options = (o: Partial<ScanOptions>): ScanOptions => ({
+  kind: "rows",
+  direction: "normal",
+  left: "normal",
+  right: "normal",
+  offsets: new Map(),
+  ...o,
+});
+
+describe("IDX preset scans", () => {
+  // Two 2x2 halves with a 2U gap
+  const split = [r("l00", 0, 0), r("l01", 1, 0), r("l10", 0, 1), r("l11", 1, 1)].concat([
+    r("r00", 4, 0),
+    r("r01", 5, 0),
+    r("r10", 4, 1),
+    r("r11", 5, 1),
+  ]);
+
+  it("scans rows, columns, halves and alternating halves", () => {
+    expect(scanKeys(split, options({})).sequence).toEqual([
+      "l00",
+      "l01",
+      "r00",
+      "r01",
+      "l10",
+      "l11",
+      "r10",
+      "r11",
+    ]);
+    expect(scanKeys(split, options({ direction: "reversed" })).sequence.slice(0, 4)).toEqual([
+      "r01",
+      "r00",
+      "l01",
+      "l00",
+    ]);
+    expect(scanKeys(split, options({ kind: "columns" })).sequence.slice(0, 4)).toEqual([
+      "l00",
+      "l10",
+      "l01",
+      "l11",
+    ]);
+    expect(scanKeys(split, options({ kind: "columns", direction: "reversed" })).sequence.slice(0, 2)).toEqual(
+      ["r01", "r11"],
+    );
+    const halves = scanKeys(split, options({ kind: "halves", right: "reversed" }));
+    expect(halves.sequence).toEqual(["l00", "l01", "l10", "l11", "r01", "r00", "r11", "r10"]);
+    expect(halves.boundary).toBe(3);
+    expect(scanKeys(split, options({ kind: "alternating" })).sequence).toEqual([
+      "l00",
+      "l01",
+      "r00",
+      "r01",
+      "l10",
+      "l11",
+      "r10",
+      "r11",
+    ]);
+  });
+
+  it("splits a board without a gap at the middle of its x range", () => {
+    const halves = splitHalves([r("a", 0, 0), r("b", 1, 0), r("c", 2, 0), r("d", 3, 0, 2)]);
+    expect(halves.boundary).toBe(2.5);
+    expect([...halves.left]).toEqual(["a", "b"]);
+  });
+
+  it("shifts the row assignment of one column", () => {
+    // column-staggered: the outer column sits a full row lower and is detected one row off
+    const keys = [r("o0", 0, 1), r("o1", 0, 2), r("a0", 1, 0), r("a1", 1, 1), r("a2", 1, 2)];
+    const before = assignLines(keys, "row", new Map());
+    expect(before.lines).toEqual([["a0"], ["o0", "a1"], ["o1", "a2"]]);
+    const outer = before.crossLines.findIndex((col) => col.includes("o0"));
+    const after = assignLines(keys, "row", new Map([[outer, -1]]));
+    expect(after.lines).toEqual([["o0", "a0"], ["o1", "a1"], ["a2"]]);
+  });
+
+  it("uses the bounding box of rotated keys", () => {
+    const rotated = keyRect({
+      key: {
+        type: "key",
+        id: "k",
+        profile: "p",
+        transform: { x: 0, y: 0, rotation: 0 },
+        size: { w: 2, h: 1 },
+      },
+      x: 0,
+      y: 0,
+      rotation: 90,
+      path: [],
+    });
+    expect(rotated.x).toBeCloseTo(-1);
+    expect(rotated.w).toBeCloseTo(1);
+    expect(rotated.h).toBeCloseTo(2);
+  });
+
+  it("orders by matrix row then col and leaves unwired keys at the end", () => {
+    const positions = new Map([
+      ["a", { row: 1, col: 0 }],
+      ["b", { row: 0, col: 2 }],
+      ["c", { row: 0, col: 1 }],
+    ]);
+    expect(matrixSequence(["x", "a", "b", "y", "c"], positions)).toEqual(["c", "b", "a", "x", "y"]);
+  });
+});
+
+describe("IDX import from existing definitions", () => {
+  const shown = (phy: PhyFile): FlatKey[] => flattenKeys(phy).filter((k) => !k.key.decal);
+
+  it("matches every key of the KLE the project came from, in KLE order", () => {
+    for (const file of ["kle/macropad-4x4.json", "kle/cr0wn60.json"]) {
+      const { phy, keyOrder } = importKle(sample(file), { idGenerator: gen() });
+      const result = matchPlacements(readLayoutPlacements(sample(file)).placements, shown(phy));
+      expect(result.unmatched, file).toBe(0);
+      expect(result.ids).toEqual(keyOrder.filter((id) => shown(phy).some((k) => k.key.id === id)));
+    }
+  });
+
+  it("matches the VIA definition of cr0wn60 against its KLE", () => {
+    const { phy } = importKle(sample("kle/cr0wn60.json"), { idGenerator: gen() });
+    const keys = shown(phy);
+    const result = matchPlacements(readLayoutPlacements(sample("via/cr0wn60.json")).placements, keys);
+    expect(result.ids.length).toBe(keys.length);
+    expect(new Set(result.ids).size).toBe(result.ids.length);
+  });
+
+  it("reads QMK layouts, asks for a name when there are several, and applies rotation", () => {
+    const kle = [
+      [{ r: 30, rx: 2, ry: 1, x: 0.5 }, "A"],
+      [{ x: -1 }, "B"],
+    ];
+    const { phy } = importKle(kle, { idGenerator: gen() });
+    const keys = shown(phy);
+    const qmk = {
+      layouts: {
+        LAYOUT_a: {
+          layout: [
+            { matrix: [0, 1], x: 1, y: 2, r: 30, rx: 2, ry: 1 },
+            { matrix: [0, 0], x: 2.5, y: 1, r: 30, rx: 2, ry: 1 },
+          ],
+        },
+        LAYOUT_b: { layout: [{ matrix: [0, 0], x: 0, y: 0 }] },
+      },
+    };
+    expect(readLayoutPlacements(qmk)).toEqual({ placements: [], layouts: ["LAYOUT_a", "LAYOUT_b"] });
+    const read = readLayoutPlacements(qmk, "LAYOUT_a");
+    const result = matchPlacements(read.placements, keys);
+    expect(result.unmatched).toBe(0);
+    const label = (id: string) => keys.find((k) => k.key.id === id)!.key.labels?.find(Boolean);
+    expect(result.ids.map(label)).toEqual(["B", "A"]);
+    expect(matchPlacements(readLayoutPlacements(qmk, "LAYOUT_b").placements, keys).unmatched).toBe(1);
+  });
+});

mock/tests/keyShape.test.ts

@@ -0,0 +1,62 @@
+import { describe, expect, it } from "vitest";
+import {
+  IRREGULAR_KEY_PRESETS,
+  hasSecondRect,
+  keyOrigin,
+  keyOutline,
+  keyRects,
+} from "../src/domain/keyShape";
+import { keyPath } from "../src/ui/phy/logic";
+
+const isoEnter = IRREGULAR_KEY_PRESETS.find((p) => p.id === "iso-enter")!.size;
+const asSet = (loop: { x: number; y: number }[]) => loop.map((p) => `${p.x},${p.y}`).sort();
+
+describe("key shape", () => {
+  it("fills missing second-rectangle fields with KLE's defaults", () => {
+    expect(hasSecondRect({ w: 1, h: 1 })).toBe(false);
+    expect(keyRects({ w: 1, h: 1 })).toEqual([{ x: 0, y: 0, w: 1, h: 1 }]);
+    expect(keyRects({ w: 1.25, h: 1, w2: 1.75 })).toEqual([
+      { x: 0, y: 0, w: 1.25, h: 1 },
+      { x: 0, y: 0, w: 1.75, h: 1 },
+    ]);
+  });
+  it("traces the ISO Enter as one clockwise loop of six corners", () => {
+    const loops = keyOutline(isoEnter);
+    expect(loops).toHaveLength(1);
+    expect(asSet(loops[0]!)).toEqual(
+      asSet([
+        { x: -0.25, y: 0 },
+        { x: 1.25, y: 0 },
+        { x: 1.25, y: 2 },
+        { x: 0, y: 2 },
+        { x: 0, y: 1 },
+        { x: -0.25, y: 1 },
+      ]),
+    );
+    // Shoelace area is positive for a clockwise loop on a y-down screen.
+    const loop = loops[0]!;
+    const area = loop.reduce((sum, p, i) => {
+      const q = loop[(i + 1) % loop.length]!;
+      return sum + (p.x * q.y - q.x * p.y) / 2;
+    }, 0);
+    expect(area).toBeCloseTo(1.25 * 2 + 0.25);
+  });
+  it("traces a rectangle-in-rectangle as the outer rectangle", () => {
+    expect(keyOutline({ w: 1, h: 1, w2: 2 }).map(asSet)).toEqual([
+      asSet([
+        { x: 0, y: 0 },
+        { x: 2, y: 0 },
+        { x: 2, y: 1 },
+        { x: 0, y: 1 },
+      ]),
+    ]);
+  });
+  it("puts the bounding box's top-left where the key is placed", () => {
+    expect(keyOrigin(isoEnter)).toEqual({ x: -0.25, y: 0 });
+    expect(keyOrigin({ w: 1, h: 1 })).toEqual({ x: 0, y: 0 });
+  });
+  it("draws plain keys as rects and irregular ones as a path", () => {
+    expect(keyPath({ w: 1, h: 1 })).toBeUndefined();
+    expect(keyPath(isoEnter)).toMatch(/^M .* Z$/);
+  });
+});

mock/tests/kle-oracle.test.ts

@@ -0,0 +1,374 @@
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+import { describe, expect, it } from "vitest";
+import type { KeyNode, PhyFile } from "../src/domain/phy";
+import { flattenKeys } from "../src/domain/geometry";
+import { clusterNodes, reframe, reparent } from "../src/domain/phyCommands";
+import { importKle } from "../src/io/kleImport";
+import { exportKle } from "../src/io/kleExport";
+import { createIdx } from "../src/domain/idx";
+
+type OracleKey = {
+  x: number;
+  y: number;
+  width: number;
+  height: number;
+  x2: number;
+  y2: number;
+  width2: number;
+  height2: number;
+  rotation_angle: number;
+  rotation_x: number;
+  rotation_y: number;
+  labels: (string | null)[];
+  textColor: (string | null)[];
+  textSize: (number | null)[];
+  default: { textColor: string; textSize: number };
+  color: string;
+  profile: string;
+  nub: boolean;
+  stepped: boolean;
+  decal: boolean;
+  ghost: boolean;
+  sm: string;
+  sb: string;
+  st: string;
+};
+type Case = { input: unknown[]; meta: Record<string, unknown>; keys: OracleKey[] };
+const oracle = JSON.parse(
+  readFileSync(resolve(process.cwd(), "tests/fixtures/kle-oracle.json"), "utf8"),
+) as Record<string, Case>;
+// Independent expected lookup derived from the frozen serial.js output fixture.
+const labelMap: readonly (readonly (number | null)[])[] = [
+  [0, 8, 2, 6, 9, 7, 1, 10, 3, 4, 11, 5],
+  [null, 0, null, null, 6, null, null, 1, null, 4, 11, 5],
+  [null, null, null, 0, 8, 2, null, null, null, 4, 11, 5],
+  [null, null, null, null, 0, null, null, null, null, 4, 11, 5],
+  [0, 8, 2, 6, 9, 7, 1, 10, 3, null, 4, null],
+  [null, 0, null, null, 6, null, null, 1, null, null, 4, null],
+  [null, null, null, 0, 8, 2, null, null, null, null, 4, null],
+  [null, null, null, null, 0, null, null, null, null, null, 4, null],
+];
+const uuid = (() => {
+  let i = 0;
+  return () => `12345678-90ab-4cde-8f01-${String(++i).padStart(12, "0")}`;
+})();
+const angleRad = (degrees: number) => (degrees * Math.PI) / 180;
+const near = (actual: number, expected: number, tolerance = 1e-9) =>
+  expect(Math.abs(actual - expected), `${actual} differs from ${expected}`).toBeLessThanOrEqual(tolerance);
+function canonicalLabels(labels: (string | null)[]): string[] {
+  const result = labels.map((label) => label ?? "");
+  while (result.at(-1) === "") result.pop();
+  return result;
+}
+function oracleOrigin(k: OracleKey): { x: number; y: number } {
+  const r = angleRad(k.rotation_angle),
+    dx = k.x - k.rotation_x,
+    dy = k.y - k.rotation_y;
+  return {
+    x: k.rotation_x + Math.cos(r) * dx - Math.sin(r) * dy,
+    y: k.rotation_y + Math.sin(r) * dx + Math.cos(r) * dy,
+  };
+}
+function expectedCorners(k: OracleKey, second = false): { x: number; y: number }[] {
+  const r = angleRad(k.rotation_angle),
+    ox = k.x + (second ? k.x2 : 0),
+    oy = k.y + (second ? k.y2 : 0);
+  const w = second ? k.width2 : k.width,
+    h = second ? k.height2 : k.height;
+  return [
+    [0, 0],
+    [w, 0],
+    [w, h],
+    [0, h],
+  ].map(([x, y]) => {
+    const px = ox + x!,
+      py = oy + y!,
+      dx = px - k.rotation_x,
+      dy = py - k.rotation_y;
+    return {
+      x: k.rotation_x + Math.cos(r) * dx - Math.sin(r) * dy,
+      y: k.rotation_y + Math.sin(r) * dx + Math.cos(r) * dy,
+    };
+  });
+}
+function keyCorners(k: KeyNode, second = false): { x: number; y: number }[] {
+  const r = angleRad(k.transform.rotation),
+    ox = second ? (k.size.x2 ?? 0) : 0,
+    oy = second ? (k.size.y2 ?? 0) : 0;
+  const w = second ? (k.size.w2 ?? k.size.w) : k.size.w,
+    h = second ? (k.size.h2 ?? k.size.h) : k.size.h;
+  return [
+    [0, 0],
+    [w, 0],
+    [w, h],
+    [0, h],
+  ].map(([x, y]) => ({
+    x: k.transform.x + Math.cos(r) * (ox + x!) - Math.sin(r) * (oy + y!),
+    y: k.transform.y + Math.sin(r) * (ox + x!) + Math.cos(r) * (oy + y!),
+  }));
+}
+function expectedStyleArrays(k: OracleKey, key: KeyNode): void {
+  const compat = key.kleCompatibility ?? {},
+    a = typeof compat.a === "number" ? compat.a : 4;
+  const slots = labelMap[a] ?? labelMap[4]!;
+  const t = typeof compat.t === "string" ? compat.t.split("\n") : [];
+  expect(compat.c).toBe(k.color);
+  expect(compat.p).toBe(k.profile);
+  expect(compat.sm).toBe(k.sm);
+  expect(compat.sb).toBe(k.sb);
+  expect(compat.st).toBe(k.st);
+  expect(compat.l === true).toBe(k.stepped);
+  expect(compat.n === true).toBe(k.nub);
+  expect(key.decal === true).toBe(k.decal);
+  expect(key.ghost === true).toBe(k.ghost);
+  expect(compat.f).toBe(k.default.textSize);
+  const defaultTextColor = t[0] ?? "#000000";
+  expect(k.default.textColor).toBe(defaultTextColor);
+  const expectedColors = Array<string | null>(12).fill(null),
+    expectedSizes = Array<number | null>(12).fill(null);
+  slots.forEach((source, slot) => {
+    const hasLabel = (key.labels?.[slot] ?? "") !== "";
+    if (hasLabel && source !== null && source > 0 && source < t.length) expectedColors[slot] = t[source]!;
+    if (hasLabel && source !== null && source >= 0) {
+      if (Array.isArray(compat.fa) && source < compat.fa.length && typeof compat.fa[source] === "number")
+        expectedSizes[slot] = compat.fa[source] as number;
+      else if (source > 0 && typeof compat.f2 === "number") expectedSizes[slot] = compat.f2;
+    }
+  });
+  const oracleColors = Array.from({ length: 12 }, (_, i) => k.textColor[i] ?? null);
+  const oracleSizes = Array.from({ length: 12 }, (_, i) => k.textSize[i] ?? null);
+  expect(expectedColors).toEqual(oracleColors);
+  expect(expectedSizes).toEqual(oracleSizes);
+  for (let i = 0; i < 12; i++) {
+    expect(expectedColors[i]).toBe(oracleColors[i]);
+    expect(expectedSizes[i]).toBe(oracleSizes[i]);
+  }
+}
+function verify(phy: PhyFile, expected: Case, tolerance = 1e-9): void {
+  const keys = flattenKeys(phy).map((x) => x.key);
+  expect(keys).toHaveLength(expected.keys.length);
+  expect(phy.kleCompatibility).toEqual(expected.meta);
+  const unmatched = [...keys];
+  for (const want of expected.keys) {
+    const origin = oracleOrigin(want),
+      labels = canonicalLabels(want.labels);
+    const index = unmatched.findIndex(
+      (candidate) =>
+        JSON.stringify(candidate.labels ?? []) === JSON.stringify(labels) &&
+        Math.abs(candidate.transform.x - origin.x) < 1e-6 &&
+        Math.abs(candidate.transform.y - origin.y) < 1e-6,
+    );
+    expect(
+      index,
+      `missing oracle key labels=${JSON.stringify(labels)} at ${origin.x},${origin.y}`,
+    ).toBeGreaterThanOrEqual(0);
+    const actual = unmatched.splice(index, 1)[0]!;
+    near(actual.transform.x, origin.x, tolerance);
+    near(actual.transform.y, origin.y, tolerance);
+    near(actual.transform.rotation, want.rotation_angle, tolerance);
+    expect(actual.labels ?? []).toEqual(labels);
+    expect(actual.size.w).toBe(want.width);
+    expect(actual.size.h).toBe(want.height);
+    expect(actual.size.x2 ?? 0).toBe(want.x2);
+    expect(actual.size.y2 ?? 0).toBe(want.y2);
+    expect(actual.size.w2 ?? actual.size.w).toBe(want.width2);
+    expect(actual.size.h2 ?? actual.size.h).toBe(want.height2);
+    const actualMain = keyCorners(actual),
+      expectedMain = expectedCorners(want);
+    const actualSecond = keyCorners(actual, true),
+      expectedSecond = expectedCorners(want, true);
+    [...actualMain, ...actualSecond].forEach((point, i) => {
+      const target = [...expectedMain, ...expectedSecond][i]!;
+      near(point.x, target.x, tolerance);
+      near(point.y, target.y, tolerance);
+    });
+    expectedStyleArrays(want, actual);
+  }
+}
+
+describe("KLE importer against frozen serial.js oracle", () => {
+  for (const [name, testCase] of Object.entries(oracle)) {
+    it(`${name}: import and export/import match oracle`, () => {
+      const first = importKle(testCase.input, { idGenerator: uuid });
+      verify(first.phy, testCase);
+      const eligible = first.phy.root.filter((node): node is KeyNode => node.type === "key" && !node.decal);
+      expect(first.keyOrder).toEqual(eligible.map((key) => key.id));
+      const second = importKle(exportKle(first.phy), { idGenerator: uuid });
+      verify(second.phy, testCase, 1e-6);
+    });
+  }
+});
+
+describe("PHY regression cases from Sol review", () => {
+  const base = (root: PhyFile["root"]): PhyFile => ({
+    version: "0.1.0",
+    metadata: {},
+    profiles: [{ id: "default", name: "Default", unitSize: { x: 19.05, y: 19.05 } }],
+    root,
+  });
+  it("reparent rejects self and descendants regardless of moved node kind", () => {
+    const phy = base([
+      {
+        type: "cluster",
+        id: "parent",
+        transform: { x: 0, y: 0, rotation: 0 },
+        children: [
+          {
+            type: "cluster",
+            id: "child",
+            transform: { x: 0, y: 0, rotation: 0 },
+            children: [
+              { type: "cluster", id: "grandchild", transform: { x: 0, y: 0, rotation: 0 }, children: [] },
+            ],
+          },
+        ],
+      },
+      {
+        type: "variantGroup",
+        id: "group",
+        name: "G",
+        transform: { x: 0, y: 0, rotation: 0 },
+        default: "v",
+        children: [
+          {
+            type: "variant",
+            id: "v",
+            name: "V",
+            children: [
+              { type: "cluster", id: "inside", transform: { x: 0, y: 0, rotation: 0 }, children: [] },
+            ],
+          },
+          { type: "variant", id: "v2", name: "V2", children: [] },
+        ],
+      },
+    ]);
+    expect(() => reparent(phy, "parent", "parent")).toThrow();
+    expect(() => reparent(phy, "parent", "child")).toThrow();
+    expect(() => reparent(phy, "child", "child")).toThrow();
+    expect(() => reparent(phy, "child", "grandchild")).toThrow();
+    expect(() => reparent(phy, "group", "inside")).toThrow();
+  });
+  it("cluster frame starts at the rotated shape bounds, including second rectangles", () => {
+    const phy = base([
+      {
+        type: "key",
+        id: "wide",
+        profile: "default",
+        transform: { x: 2, y: 2, rotation: 90 },
+        size: { w: 2, h: 1, x2: -1, y2: -0.5, w2: 1, h2: 1 },
+      },
+      {
+        type: "key",
+        id: "other",
+        profile: "default",
+        transform: { x: 5, y: 2, rotation: 90 },
+        size: { w: 1, h: 1 },
+      },
+    ]);
+    const grouped = clusterNodes(
+      phy,
+      ["wide", "other"],
+      "block",
+      () => "12345678-90ab-4cde-8f01-000000000001",
+    );
+    const cluster = grouped.root[0]!;
+    expect(cluster.type).toBe("cluster");
+    if (cluster.type !== "cluster") throw new Error("Expected cluster");
+    // In the cluster's 90-degree coordinate frame the second rectangle extends left/up.
+    near(cluster.transform.rotation, 90);
+    near(cluster.transform.x, 5);
+    near(cluster.transform.y, 1);
+  });
+  it("flattening propagates raw ancestor rotations without normalizing", () => {
+    const phy = base([
+      {
+        type: "cluster",
+        id: "a",
+        transform: { x: 0, y: 0, rotation: 450 },
+        children: [
+          {
+            type: "cluster",
+            id: "b",
+            transform: { x: 0, y: 0, rotation: 400 },
+            children: [
+              {
+                type: "key",
+                id: "k",
+                profile: "default",
+                transform: { x: 0, y: 0, rotation: -20 },
+                size: { w: 1, h: 1 },
+              },
+            ],
+          },
+        ],
+      },
+    ]);
+    expect(flattenKeys(phy)[0]!.rotation).toBe(830);
+  });
+  it("cluster, uncluster, reparent, and reframe retain raw world angles", () => {
+    let phy = base([
+      {
+        type: "cluster",
+        id: "outer",
+        transform: { x: 1, y: 2, rotation: 400 },
+        children: [
+          {
+            type: "key",
+            id: "a",
+            profile: "default",
+            transform: { x: 0, y: 0, rotation: 50 },
+            size: { w: 1, h: 1 },
+          },
+          {
+            type: "key",
+            id: "b",
+            profile: "default",
+            transform: { x: 2, y: 0, rotation: 50 },
+            size: { w: 1, h: 1 },
+          },
+        ],
+      },
+      { type: "cluster", id: "target", transform: { x: -1, y: 4, rotation: 720 }, children: [] },
+    ]);
+    const rotations = () =>
+      Object.fromEntries(flattenKeys(phy).map(({ key, rotation }) => [key.id, rotation]));
+    expect(rotations()).toEqual({ a: 450, b: 450 });
+    phy = clusterNodes(phy, ["a", "b"], "nested", uuid);
+    expect(rotations()).toEqual({ a: 450, b: 450 });
+    const outer = phy.root[0]!;
+    if (outer.type !== "cluster") throw new Error("Expected outer cluster");
+    const nested = outer.children[0]!;
+    if (nested.type !== "cluster") throw new Error("Expected nested cluster");
+    phy = reframe(phy, nested.id, { x: 3, y: -2, rotation: 810 });
+    expect(rotations()).toEqual({ a: 450, b: 450 });
+    phy = reparent(phy, "a", "target");
+    expect(rotations()).toEqual({ a: 450, b: 450 });
+    phy = clusterNodes(phy, ["b"], "single", uuid);
+    expect(rotations()).toEqual({ a: 450, b: 450 });
+  });
+  it("T-18 initial order filters decal and retains ghost", () => {
+    const phy = base([
+      {
+        type: "key",
+        id: "decal",
+        profile: "default",
+        transform: { x: 0, y: 0, rotation: 0 },
+        size: { w: 1, h: 1 },
+        decal: true,
+      },
+      {
+        type: "key",
+        id: "ghost",
+        profile: "default",
+        transform: { x: 1, y: 0, rotation: 0 },
+        size: { w: 1, h: 1 },
+        ghost: true,
+      },
+    ]);
+    const imported = importKle([[{ d: true }, "D", { g: true }, "G"]], { idGenerator: uuid });
+    expect(imported.keyOrder).toHaveLength(1);
+    const idx = createIdx(phy, ["decal", "ghost"], { source: "x", checksum: "sha256-jcs:x" });
+    expect(idx.order).toEqual(["ghost"]);
+  });
+});

mock/tests/phase1.test.ts

@@ -0,0 +1,257 @@
+import { describe, expect, it } from "vitest";
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+import type { PhyFile, KeyNode } from "../src/domain/phy";
+import { flattenKeys } from "../src/domain/geometry";
+import { importKle } from "../src/io/kleImport";
+import { exportKle } from "../src/io/kleExport";
+import { canonicalize, sha256Jcs } from "../src/io/json";
+import {
+  addVariant,
+  clusterNodes,
+  createVariantGroup,
+  deleteVariant,
+  reframe,
+  reparent,
+  uncluster,
+} from "../src/domain/phyCommands";
+
+const gen = (() => {
+  let i = 0;
+  return () => {
+    const s = String(++i).padStart(12, "0");
+    return `${s.slice(0, 8)}-${s.slice(8)}-4000-8000-000000000000`;
+  };
+})();
+function sample(path: string): unknown {
+  return JSON.parse(readFileSync(resolve(process.cwd(), "../samples/kle", path), "utf8")) as unknown;
+}
+function byShape(p: PhyFile) {
+  return flattenKeys(p)
+    .map((k) => ({
+      x: k.x,
+      y: k.y,
+      r: k.rotation,
+      w: k.key.size.w,
+      h: k.key.size.h,
+      labels: k.key.labels,
+      compat: k.key.kleCompatibility,
+    }))
+    .sort(
+      (a, b) =>
+        Math.round(a.r * 1e6) - Math.round(b.r * 1e6) ||
+        Math.round(a.y * 1e6) - Math.round(b.y * 1e6) ||
+        Math.round(a.x * 1e6) - Math.round(b.x * 1e6),
+    );
+}
+describe("KLE round trip", () => {
+  for (const file of ["macropad-4x4.json", "cr0wn60.json"])
+    it(file, () => {
+      const a = importKle(sample(file), { idGenerator: gen }).phy;
+      const b = importKle(exportKle(a), { idGenerator: gen }).phy;
+      const aa = byShape(a),
+        bb = byShape(b);
+      expect(bb).toHaveLength(aa.length);
+      for (let i = 0; i < aa.length; i++) {
+        const x = aa[i]!,
+          y = bb[i]!;
+        expect(
+          Math.abs(x.x - y.x),
+          `${file} item ${i}: x ${x.x} vs ${y.x}; y=${x.y}/${y.y}; rot=${x.r}/${y.r}; labels=${JSON.stringify(x.labels)}/${JSON.stringify(y.labels)}`,
+        ).toBeLessThanOrEqual(1e-6);
+        expect(Math.abs(x.y - y.y), `${file} item ${i}: y ${x.y} vs ${y.y}`).toBeLessThanOrEqual(1e-6);
+        expect(Math.abs(x.r - y.r)).toBeLessThanOrEqual(1e-6);
+        expect(x.w).toBe(y.w);
+        expect(x.h).toBe(y.h);
+        expect(x.labels).toEqual(y.labels);
+        expect(x.compat).toEqual(y.compat);
+      }
+    });
+  it("rotated KLE cursor, mid-row rotation and pivot changes", () => {
+    const { phy } = importKle([[{ r: 90, rx: 1, ry: 1 }, "A", "B", { r: 180, rx: 2, ry: 1 }, "C"]], {
+      idGenerator: gen,
+    });
+    const k = phy.root as KeyNode[];
+    expect(k.map((x) => [x.transform.x, x.transform.y, x.transform.rotation])).toEqual([
+      [1, 1, 90],
+      [1, 2, 90],
+      [2, 1, 180],
+    ]);
+    const corners = (n: KeyNode) =>
+      [
+        [0, 0],
+        [n.size.w, 0],
+        [n.size.w, n.size.h],
+        [0, n.size.h],
+      ].map(([x, y]) => {
+        const a = (n.transform.rotation * Math.PI) / 180;
+        return [
+          n.transform.x + Math.cos(a) * x! - Math.sin(a) * y!,
+          n.transform.y + Math.sin(a) * x! + Math.cos(a) * y!,
+        ];
+      });
+    const check = (actual: number[][], expected: number[][]) =>
+      actual.forEach((p, i) =>
+        p.forEach((v, j) => expect(Math.abs(v - expected[i]![j]!)).toBeLessThanOrEqual(1e-12)),
+      );
+    check(corners(k[0]!), [
+      [1, 1],
+      [1, 2],
+      [0, 2],
+      [0, 1],
+    ]);
+    check(corners(k[2]!), [
+      [2, 1],
+      [1, 1],
+      [1, 0],
+      [2, 0],
+    ]);
+  });
+});
+function fixture(): PhyFile {
+  return {
+    version: "0.1.0",
+    metadata: {},
+    profiles: [{ id: "default", name: "Default", unitSize: { x: 19.05, y: 19.05 } }],
+    root: [
+      {
+        type: "cluster",
+        id: "outer",
+        name: "Outer",
+        transform: { x: 4, y: 2, rotation: 30 },
+        children: [
+          {
+            type: "cluster",
+            id: "inner",
+            name: "Inner",
+            transform: { x: 1, y: 2, rotation: 20 },
+            children: [
+              {
+                type: "key",
+                id: "a",
+                profile: "default",
+                transform: { x: 0.2, y: 0.4, rotation: 15 },
+                size: { w: 1, h: 1 },
+              },
+              {
+                type: "key",
+                id: "b",
+                profile: "default",
+                transform: { x: 1.4, y: -0.2, rotation: -5 },
+                size: { w: 1, h: 1 },
+              },
+            ],
+          },
+        ],
+      },
+      {
+        type: "cluster",
+        id: "other",
+        name: "Other",
+        transform: { x: -3, y: 6, rotation: -12 },
+        children: [],
+      },
+    ],
+  };
+}
+const pose = (p: PhyFile) =>
+  Object.fromEntries(flattenKeys(p).map((k) => [k.key.id, [k.x, k.y, k.rotation]]));
+const closePose = (a: Record<string, number[]>, b: Record<string, number[]>) => {
+  for (const id of Object.keys(a)) {
+    a[id]!.forEach((v, i) =>
+      expect(Math.abs(v - b[id]![i]!), `pose ${id} component ${i}: ${v} vs ${b[id]![i]}`).toBeLessThanOrEqual(
+        1e-9,
+      ),
+    );
+  }
+};
+describe("PHY commands and variants", () => {
+  it("preserves nested rotated key world placement through cluster, uncluster, reparent, reframe", () => {
+    let p = fixture();
+    const before = pose(p);
+    p = clusterNodes(p, ["a", "b"], "picked", gen);
+    closePose(before, pose(p));
+    const outer = p.root[0]!;
+    if (outer.type !== "cluster") throw Error();
+    const inner = outer.children[0]!;
+    if (inner.type !== "cluster") throw Error();
+    const created = inner.children[0]!;
+    if (created.type !== "cluster") throw Error();
+    p = uncluster(p, created.id);
+    closePose(before, pose(p));
+    p = reparent(p, "a", "other");
+    closePose(before, pose(p));
+    p = reframe(p, "outer", { x: 8, y: -4, rotation: -20 });
+    closePose(before, pose(p));
+  });
+  it("flattens variant selection, exports only the selected branch, and applies deletion rules", () => {
+    let p: PhyFile = {
+      version: "0.1.0",
+      metadata: {},
+      profiles: [{ id: "default", name: "Default", unitSize: { x: 19.05, y: 19.05 } }],
+      root: [],
+    };
+    p = createVariantGroup(
+      p,
+      "Layout",
+      { x: 2, y: 0, rotation: 0 },
+      [
+        {
+          name: "ANSI",
+          children: [
+            {
+              type: "key",
+              id: "ansi",
+              profile: "default",
+              transform: { x: 0, y: 0, rotation: 0 },
+              size: { w: 1, h: 1 },
+              labels: ["Enter"],
+            },
+          ],
+        },
+        {
+          name: "ISO",
+          children: [
+            {
+              type: "key",
+              id: "iso",
+              profile: "default",
+              transform: { x: 0, y: 0, rotation: 0 },
+              size: { w: 1, h: 1 },
+              labels: ["Enter"],
+            },
+          ],
+        },
+      ],
+      gen,
+    );
+    const group = p.root[0]!;
+    if (group.type !== "variantGroup") throw Error();
+    expect(flattenKeys(p).map((x) => x.key.id)).toEqual(["ansi"]);
+    const choice = group.children[1]!.id;
+    expect(flattenKeys(p, { [group.id]: choice }).map((x) => x.key.id)).toEqual(["iso"]);
+    const out = JSON.stringify(exportKle(p, { [group.id]: choice }));
+    expect(out).not.toContain('"ansi"');
+    expect(() => deleteVariant(p, group.id, group.children[0]!.id)).toThrow();
+    p = addVariant(p, group.id, "JIS", gen);
+    const grown = p.root[0]!;
+    if (grown.type !== "variantGroup") throw Error();
+    p = deleteVariant(p, group.id, grown.default);
+    const reduced = p.root[0]!;
+    if (reduced.type !== "variantGroup") throw Error();
+    expect(reduced.default).toBe(reduced.children[0]!.id);
+  });
+});
+describe("JCS", () => {
+  it("sorts keys and uses ECMAScript number formatting", () => {
+    expect(canonicalize({ z: 1, a: 1e-6, b: 1e21, c: -0 })).toBe('{"a":0.000001,"b":1e+21,"c":0,"z":1}');
+    expect(canonicalize([333333333.33333329, 1e30, 4.5, 2e-3, 1e-27])).toBe(
+      "[333333333.3333333,1e+30,4.5,0.002,1e-27]",
+    );
+  });
+  it("hashes canonical UTF-8 with SHA-256", async () => {
+    expect(await sha256Jcs({ a: 1 })).toBe(
+      "sha256-jcs:015abd7f5cc57a2dd94b7590f04ad8084273905ee33ec5cebeae62276a97f862",
+    );
+  });
+});

mock/tests/phyDomain.test.ts

@@ -0,0 +1,124 @@
+import { describe, expect, it } from "vitest";
+import type { PhyFile } from "../src/domain/phy";
+import {
+  addComponentToParent,
+  addKeyToParent,
+  cloneNodesWithNewIds,
+  createVariantGroupInParent,
+  duplicateNode,
+  insertNodes,
+} from "../src/domain/phyCommands";
+const ids = (() => {
+  let n = 0;
+  return () => `0000000${++n}-0000-4000-8000-000000000000`;
+})();
+const file: PhyFile = {
+  version: "0.1.0",
+  metadata: {},
+  profiles: [{ id: "p", name: "P", unitSize: { x: 1, y: 1 } }],
+  root: [
+    { type: "cluster", id: "cl-parent", name: "P", transform: { x: 0, y: 0, rotation: 0 }, children: [] },
+  ],
+};
+describe("PHY parent insertion and duplication", () => {
+  it("adds keys and components to root, clusters, or variants", () => {
+    let p = addKeyToParent(file, "cl-parent", { x: 2, y: 3, rotation: 0 }, { w: 1, h: 1 }, "p", ids);
+    expect(
+      p.root[0]!.type === "cluster" &&
+        (p.root[0]! as import("../src/domain/phy").ClusterNode).children[0]?.type,
+    ).toBe("key");
+    p = addComponentToParent(p, "cl-parent", { x: 0, y: 0, rotation: 0 }, "@led", ids);
+    expect(
+      p.root[0]!.type === "cluster" &&
+        (p.root[0]! as import("../src/domain/phy").ClusterNode).children[1]?.type,
+    ).toBe("component");
+  });
+  it("inserts a copied node batch into a selected container", () => {
+    const node = {
+      type: "key" as const,
+      id: "key-source",
+      profile: "p",
+      transform: { x: 1, y: 1, rotation: 0 },
+      size: { w: 1, h: 1 },
+    };
+    const p = insertNodes(file, "cl-parent", [node]);
+    expect(
+      p.root[0]!.type === "cluster" && (p.root[0]! as import("../src/domain/phy").ClusterNode).children,
+    ).toHaveLength(1);
+  });
+  it("renews IDs and remaps a duplicated group's internal default", () => {
+    const base: PhyFile = {
+      ...file,
+      root: [
+        {
+          type: "variantGroup",
+          id: "vg-source",
+          name: "VG",
+          transform: { x: 0, y: 0, rotation: 0 },
+          default: "v-one",
+          children: [
+            { type: "variant", id: "v-one", name: "One", children: [] },
+            { type: "variant", id: "v-two", name: "Two", children: [] },
+          ],
+        },
+      ],
+    };
+    const q = duplicateNode(base, "vg-source", ids);
+    const copy = q.root[1];
+    expect(copy?.type).toBe("variantGroup");
+    if (copy?.type === "variantGroup") {
+      expect(copy.id).not.toBe("vg-source");
+      expect(copy.default).not.toBe("v-one");
+      expect(copy.children.map((v) => v.id)).not.toContain("v-one");
+      expect(copy.default).toBe(copy.children[0]!.id);
+    }
+  });
+  it("remaps defaults for variant groups nested inside a copied cluster", () => {
+    const nested: PhyFile["root"][number] = {
+      type: "cluster",
+      id: "outer",
+      transform: { x: 0, y: 0, rotation: 0 },
+      children: [
+        {
+          type: "variantGroup",
+          id: "vg-inner",
+          name: "Inner",
+          transform: { x: 1, y: 2, rotation: 0 },
+          default: "v-inner-a",
+          children: [
+            { type: "variant", id: "v-inner-a", name: "A", children: [] },
+            { type: "variant", id: "v-inner-b", name: "B", children: [] },
+          ],
+        },
+      ],
+    };
+    const copy = cloneNodesWithNewIds([nested], ids)[0];
+    expect(copy?.type).toBe("cluster");
+    if (copy?.type === "cluster") {
+      const group = copy.children[0];
+      expect(group?.type).toBe("variantGroup");
+      if (group?.type === "variantGroup") {
+        expect(group.default).toBe(group.children[0]!.id);
+        expect(group.default).not.toBe("v-inner-a");
+      }
+    }
+  });
+  it("creates a variant group inside a cluster or a variant", () => {
+    const variants: Parameters<typeof createVariantGroupInParent>[4] = [{ name: "A" }, { name: "B" }];
+    let p = createVariantGroupInParent(file, "cl-parent", "G", { x: 0, y: 0, rotation: 0 }, variants, ids);
+    const parent = p.root[0] as import("../src/domain/phy").ClusterNode;
+    expect(p.root).toHaveLength(1);
+    expect(parent.children.map((n) => n.type)).toEqual(["variantGroup"]);
+    const group = parent.children[0] as import("../src/domain/phy").VariantGroupNode;
+    p = createVariantGroupInParent(
+      p,
+      group.children[1]!.id,
+      "Inner",
+      { x: 0, y: 0, rotation: 0 },
+      variants,
+      ids,
+    );
+    const updated = (p.root[0] as import("../src/domain/phy").ClusterNode).children[0] as typeof group;
+    expect(updated.children[1]!.children.map((n) => n.type)).toEqual(["variantGroup"]);
+  });
+});

mock/tests/phyLogic.test.ts

@@ -0,0 +1,232 @@
+import { describe, expect, it } from "vitest";
+import {
+  GRID_STEPS,
+  localBounds,
+  insertionContainer,
+  longPressColumn,
+  nextGrid,
+  normalizeSelection,
+  obbAabb,
+  removeFocusedSubtree,
+  pasteLocalTransform,
+  pasteParent,
+  resolveKey,
+  snap,
+  selectionFrames,
+  variantBadges,
+  tabOrder,
+  treeIndex,
+  visibleNodeIds,
+} from "../src/ui/phy/logic";
+import { autoPanVelocity, fitViewport, zoomAround } from "../src/ui/phy/viewport";
+import type { PhyFile, Node as PhyNode } from "../src/domain/phy";
+const phy: PhyFile = {
+  version: "0.1.0",
+  metadata: {},
+  profiles: [],
+  root: [
+    {
+      type: "cluster",
+      id: "c",
+      transform: { x: 0, y: 0, rotation: 0 },
+      children: [
+        { type: "key", id: "k", profile: "p", transform: { x: 0, y: 0, rotation: 0 }, size: { w: 1, h: 1 } },
+      ],
+    },
+  ],
+};
+describe("PHY pure interaction rules", () => {
+  it("computes selected frame world transforms through nested rotations", () => {
+    const roots: PhyNode[] = [
+      {
+        type: "cluster",
+        id: "outer",
+        transform: { x: 10, y: 20, rotation: 90 },
+        children: [
+          {
+            type: "cluster",
+            id: "inner",
+            transform: { x: 2, y: 3, rotation: -90 },
+            children: [
+              {
+                type: "key",
+                id: "target",
+                profile: "p",
+                transform: { x: 4, y: 5, rotation: 30 },
+                size: { w: 2, h: 1 },
+              },
+            ],
+          },
+        ],
+      },
+    ];
+    const frame = selectionFrames(roots, ["target"], {}, null)[0]!;
+    expect(frame.id).toBe("target");
+    expect(frame.transform.e).toBeCloseTo(11);
+    expect(frame.transform.f).toBeCloseTo(27);
+    expect(frame.transform.a).toBeCloseTo(Math.cos(Math.PI / 6));
+    expect(frame.transform.b).toBeCloseTo(Math.sin(Math.PI / 6));
+    expect(frame.selected).toBe(true);
+    const candidateOnly = selectionFrames(roots, [], {}, "target")[0]!;
+    expect([candidateOnly.selected, candidateOnly.candidate]).toEqual([false, true]);
+  });
+  it("places variant badges at the rotated group's top-right corner, upright", () => {
+    const key = (id: string): PhyNode => ({
+      type: "key",
+      id,
+      profile: "p",
+      transform: { x: 0, y: 0, rotation: 0 },
+      size: { w: 2, h: 1 },
+    });
+    const roots: PhyNode[] = [
+      {
+        type: "variantGroup",
+        id: "g",
+        name: "G",
+        transform: { x: 1, y: 1, rotation: 90 },
+        default: "a",
+        children: [
+          { type: "variant", id: "a", name: "A", children: [key("ka")] },
+          { type: "variant", id: "b", name: "B", children: [] },
+        ],
+      },
+    ];
+    const [badge] = variantBadges(roots, {}, 10);
+    // ローカル (2 + 0.4, -2 - 0.4) を90度回して (1, 1) だけ動かす
+    expect(badge!.group.id).toBe("g");
+    expect(badge!.x).toBeCloseTo(1 + 2.4);
+    expect(badge!.y).toBeCloseTo(1 + 2.4);
+    expect(badge!.size).toBeCloseTo(2);
+  });
+  it("removes ancestors and descendants from mixed selections", () => {
+    expect(normalizeSelection(phy, ["c", "k"])).toEqual(["k"]);
+    expect(normalizeSelection(phy, ["k", "c"])).toEqual(["c"]);
+    const outside = removeFocusedSubtree(phy.root, "k");
+    expect(treeIndex(outside).nodes.has("c")).toBe(true);
+    expect(treeIndex(outside).nodes.has("k")).toBe(false);
+    expect(outside[0]?.type === "cluster" ? outside[0].children : []).toEqual([]);
+  });
+  it("cycles long press candidates and stops before the focus parent", () => {
+    expect(longPressColumn("k", ["c", "root"], "c")).toEqual(["k"]);
+    expect(longPressColumn("k", ["c", "root"])).toEqual(["k", "c", "root"]);
+  });
+  it("orders rows with a half unit tolerance", () => {
+    expect(
+      tabOrder([
+        { id: "b", x: 2, y: 0.4 },
+        { id: "a", x: 1, y: 0 },
+        { id: "c", x: 0, y: 1 },
+      ]).map((x) => x.id),
+    ).toEqual(["a", "b", "c"]);
+  });
+  it("computes bounds and paste target", () => {
+    expect(
+      obbAabb([
+        { x: 2, y: 3 },
+        { x: -1, y: 5 },
+      ]),
+    ).toEqual({ x: -1, y: 3, width: 3, height: 2 });
+    expect(pasteParent([], "c")).toBe("c");
+    expect(pasteParent(["p"], null)).toBe("p");
+    expect(pasteParent([null], "c")).toBeNull();
+  });
+  it("computes child bounds in parent axes and converts paste world position", () => {
+    const group: PhyNode = {
+      type: "cluster",
+      id: "g",
+      transform: { x: 10, y: 20, rotation: 90 },
+      children: [
+        {
+          type: "key",
+          id: "key2",
+          profile: "p",
+          transform: { x: 2, y: 3, rotation: 0 },
+          size: { w: 1, h: 2 },
+        },
+      ],
+    };
+    expect(localBounds(group.type === "cluster" ? group.children : [])).toEqual({
+      x: 2,
+      y: 3,
+      width: 1,
+      height: 2,
+    });
+    expect(
+      pasteLocalTransform(
+        { a: 0, b: 1, c: -1, d: 0, e: 10, f: 20 },
+        { a: 0, b: 1, c: -1, d: 0, e: 8, f: 18 },
+        0.25,
+      ),
+    ).toEqual({ x: 2.25, y: -1.75, rotation: 0 });
+  });
+  it("distinguishes selectable parents from variant insertion containers without ID prefixes", () => {
+    const roots: PhyNode[] = [
+      {
+        type: "variantGroup",
+        id: "group-any-id",
+        name: "Layout",
+        transform: { x: 0, y: 0, rotation: 0 },
+        default: "option-any-id",
+        children: [
+          {
+            type: "variant",
+            id: "option-any-id",
+            name: "Main",
+            children: [
+              {
+                type: "key",
+                id: "key-any-id",
+                profile: "p",
+                transform: { x: 0, y: 0, rotation: 0 },
+                size: { w: 1, h: 1 },
+              },
+            ],
+          },
+        ],
+      },
+    ];
+    const index = treeIndex(roots);
+    expect(index.selectableParent("key-any-id")).toBe("group-any-id");
+    expect(index.insertionContainer("key-any-id")).toBe("option-any-id");
+    expect(index.groupForVariant("option-any-id")).toBe("group-any-id");
+    expect(insertionContainer(roots, "group-any-id", { "group-any-id": "option-any-id" })).toBe(
+      "option-any-id",
+    );
+    expect(visibleNodeIds(roots[0], {}).has("key-any-id")).toBe(true);
+    const outside = removeFocusedSubtree(roots, "key-any-id");
+    expect(treeIndex(outside).nodes.has("key-any-id")).toBe(false);
+    expect(treeIndex(outside).nodes.has("group-any-id")).toBe(true);
+  });
+  it("snaps without changing off-grid direct numeric values and cycles steps", () => {
+    expect(snap(0.37, 0.25)).toBe(0.25);
+    expect(nextGrid(0.25, 1)).toBe(0.125);
+    expect(GRID_STEPS).toHaveLength(4);
+  });
+  it("resolves keyboard layout independent digit shortcuts and modifiers", () => {
+    expect(
+      resolveKey({ key: "@", code: "Digit1", shiftKey: true, ctrlKey: false, metaKey: false, altKey: false }),
+    ).toBe("fit");
+    expect(
+      resolveKey({ key: "z", code: "KeyZ", shiftKey: true, ctrlKey: true, metaKey: false, altKey: false }),
+    ).toBe("redo");
+  });
+  it("fits bounds centrally with padding and zooms around the cursor", () => {
+    const fitted = fitViewport({ x: 10, y: 20, width: 4, height: 2 }, 400, 300, 20);
+    expect(fitted.zoom).toBe(90);
+    expect(fitted.pan.x + (10 + 2) * fitted.zoom).toBeCloseTo(200);
+    expect(fitted.pan.y + (20 + 1) * fitted.zoom).toBeCloseTo(150);
+    const cursor = { x: 140, y: 160 },
+      world = { x: (cursor.x - fitted.pan.x) / fitted.zoom, y: (cursor.y - fitted.pan.y) / fitted.zoom },
+      zoomed = zoomAround(cursor, fitted, 1.5);
+    expect((cursor.x - zoomed.pan.x) / zoomed.zoom).toBeCloseTo(world.x);
+    expect((cursor.y - zoomed.pan.y) / zoomed.zoom).toBeCloseTo(world.y);
+  });
+  it("scales auto-pan speed near edges, outside the canvas, and at corners", () => {
+    const bounds = { x: 10, y: 20, width: 200, height: 100 };
+    expect(autoPanVelocity({ x: 110, y: 70 }, bounds)).toEqual({ x: 0, y: 0 });
+    expect(autoPanVelocity({ x: 194, y: 70 }, bounds)).toEqual({ x: 240, y: 0 });
+    expect(autoPanVelocity({ x: 210, y: 70 }, bounds)).toEqual({ x: 480, y: 0 });
+    expect(autoPanVelocity({ x: 220, y: 70 }, bounds)).toEqual({ x: 480, y: 0 });
+    expect(autoPanVelocity({ x: 210, y: 10 }, bounds)).toEqual({ x: 480, y: -480 });
+  });
+});

mock/tests/review.test.ts

@@ -0,0 +1,270 @@
+import { describe, expect, it } from "vitest";
+import { createProject } from "../src/domain/project";
+import type { PhyFile, KeyNode, VariantGroupNode } from "../src/domain/phy";
+import { generateMockTarget } from "../src/domain/generator";
+import { validateProject } from "../src/domain/validate";
+import { assignKey, type MapFile } from "../src/domain/map";
+import { setKeyWiring, setProvider, type ContactWiring, type ElcFile } from "../src/domain/elc";
+import { listDeleteReferences, deleteNodeCascade } from "../src/domain/deleteCascade";
+import { loadProject, saveProject } from "../src/io/projectFile";
+import { makePhyReference } from "../src/domain/phyReference";
+import { ProjectHistory } from "../src/domain/history";
+
+const emptyPhy = (): PhyFile => ({
+  version: "0.1.0",
+  metadata: {},
+  profiles: [{ id: "d", name: "D", unitSize: { x: 1, y: 1 } }],
+  root: [],
+});
+const key = (id: string, decal = false): KeyNode => ({
+  type: "key",
+  id,
+  profile: "d",
+  transform: { x: 0, y: 0, rotation: 0 },
+  size: { w: 1, h: 1 },
+  ...(decal ? { decal: true } : {}),
+});
+const variantGroup = (
+  id: string,
+  defaultId: string,
+  variants: Array<[string, string, (KeyNode | VariantGroupNode)[]]>,
+): VariantGroupNode => ({
+  type: "variantGroup",
+  id,
+  name: id,
+  transform: { x: 0, y: 0, rotation: 0 },
+  default: defaultId,
+  children: variants.map(([variantId, name, children]) => ({
+    type: "variant",
+    id: variantId,
+    name,
+    children,
+  })),
+});
+
+describe("review regressions", () => {
+  it("keeps sibling Variant references when deleting a Variant and moves the selection", async () => {
+    const phy = emptyPhy();
+    phy.root = [
+      variantGroup("vg", "va", [
+        ["va", "A", [key("ka")]],
+        ["vb", "B", [key("kb")]],
+        ["vc", "C", [key("kc")]],
+      ]),
+    ];
+    const p = await createProject(phy);
+    p.idx.order = ["ka", "kb", "kc"];
+    p.output.variantSelection = { vg: "va" };
+    p.elc.keys = ["ka", "kb", "kc"].map((id) => ({
+      key: id,
+      detect: "contact",
+      terminals: { a: "VCC", b: "GND" },
+    }));
+    p.elc.ledChains = [{ id: "chain", data: "VCC", order: ["ka", "kb", "kc"] }];
+    p.map.layers[0]!.keymap = ["ka", "kb", "kc"].map((keyId) => ({ keyId, keycode: "KC_A" }));
+    expect(listDeleteReferences(p, "va").map((ref) => ref.id)).toEqual(["ka", "ka", "ka", "ka"]);
+    const result = deleteNodeCascade(p, "va");
+    expect(
+      result.phy.root[0]!.type === "variantGroup" && result.phy.root[0]!.children.map((v) => v.id),
+    ).toEqual(["vb", "vc"]);
+    expect(result.phy.root[0]!.type === "variantGroup" && result.phy.root[0]!.default).toBe("vb");
+    expect(result.output.variantSelection.vg).toBe("vb");
+    expect(result.idx.order).toEqual(["kb", "kc"]);
+    expect(result.elc.keys.map((w) => w.key)).toEqual(["kb", "kc"]);
+    expect(result.elc.ledChains?.[0]?.order).toEqual(["kb", "kc"]);
+    expect(result.map.layers[0]!.keymap.map((assignment) => assignment.keyId)).toEqual(["kb", "kc"]);
+  });
+
+  it("returns schema issues without running semantic validation on malformed input", async () => {
+    const p = await createProject(emptyPhy());
+    const badOutput = await loadProject(JSON.stringify({ ...p, output: {} }));
+    expect(badOutput.errors.some((issue) => issue.path === "/output/variantSelection")).toBe(true);
+    expect(badOutput.errors.some((issue) => issue.code === "positive-unit-size")).toBe(false);
+    const badPhy = await loadProject(
+      JSON.stringify({ ...p, phy: { version: "0.1.0", profiles: null, root: [] } }),
+    );
+    expect(badPhy.errors.every((issue) => issue.code === "schema")).toBe(true);
+    expect(badPhy.errors.length).toBeGreaterThan(0);
+    const blockedSave = await saveProject({ ...p, phy: { ...p.phy, profiles: [] } });
+    expect(blockedSave.json).toBeUndefined();
+    expect(blockedSave.errors.some((issue) => issue.severity === "blocksSave")).toBe(true);
+    const semanticBlock = await saveProject({
+      ...p,
+      phy: { ...p.phy, profiles: [{ ...p.phy.profiles[0]!, unitSize: { x: 0, y: 1 } }] },
+    });
+    expect(semanticBlock.json).toBeUndefined();
+    expect(semanticBlock.errors.some((issue) => issue.code === "positive-unit-size")).toBe(true);
+  });
+
+  it("rejects unsupported project versions and allows other blocksSave projects to load", async () => {
+    const p = await createProject(emptyPhy());
+    const unsupported = await loadProject(JSON.stringify({ ...p, version: "0.2.0" }));
+    expect(unsupported.project).toBeUndefined();
+    expect(unsupported.errors.some((x) => x.code === "version")).toBe(true);
+    p.idx.order = ["missing"];
+    const blocked = await loadProject(JSON.stringify(p));
+    expect(blocked.project).toBeDefined();
+    expect(blocked.errors.some((x) => x.severity === "blocksSave")).toBe(true);
+  });
+
+  it("blocks saving duplicate IDX keys", async () => {
+    const phy = emptyPhy();
+    phy.root = [key("k")];
+    const p = await createProject(phy);
+    p.idx.order = ["k", "k"];
+    expect(validateProject(p).some((x) => x.code === "schema" && x.severity === "blocksSave")).toBe(true);
+    const result = await saveProject(p);
+    expect(result.json).toBeUndefined();
+    expect(result.errors.some((x) => x.code === "schema")).toBe(true);
+  });
+
+  it("does not retain a no-op grouped history entry", async () => {
+    const p = await createProject(emptyPhy());
+    const history = new ProjectHistory(p);
+    history.begin();
+    history.commit(p);
+    expect(history.canUndo).toBe(false);
+    const changed = { ...p, projectId: "changed" };
+    history.begin();
+    history.commit(changed);
+    expect(history.canUndo).toBe(true);
+    expect(history.undo().projectId).toBe(p.projectId);
+  });
+
+  it("ignores decals when requiring index registration, wiring, and keymap assignments", async () => {
+    const phy = emptyPhy();
+    phy.root = [key("decal", true)];
+    const p = await createProject(phy);
+    const relevant = validateProject(p).filter((issue) => issue.ids?.includes("decal"));
+    expect(
+      relevant.filter((issue) => ["idx-unregistered", "unwired-key", "unassigned-key"].includes(issue.code)),
+    ).toEqual([]);
+  });
+
+  it("preserves extension fields while editing existing MAP and ELC entries", async () => {
+    const p = await createProject(emptyPhy());
+    const map = p.map as MapFile;
+    map.layers[0]!.keymap = [{ keyId: "k", keycode: "KC_A", vendorAssignment: { keep: true } }];
+    const editedMap = assignKey(map, "Base", "k", "KC_B");
+    expect(editedMap.layers[0]!.keymap[0]).toEqual({
+      keyId: "k",
+      keycode: "KC_B",
+      vendorAssignment: { keep: true },
+    });
+    expect(() => assignKey(map, "Base", "k", "VENDOR_ACTION")).toThrow();
+    expect(() => assignKey(map, "Base", "k", "MO(Missing)")).toThrow();
+
+    const elc = p.elc as ElcFile;
+    elc.providers = [{ id: "m", kind: "mcu", part: "RP2040", vendorProvider: 9 }];
+    const editedProvider = setProvider(elc, { id: "m", kind: "mcu", part: "RP2040B" });
+    expect(editedProvider.providers[0]).toMatchObject({ part: "RP2040B", vendorProvider: 9 });
+    elc.keys = [
+      {
+        key: "k",
+        detect: "contact",
+        terminals: { a: "m.GP0", b: "m.GP1", vendorTerminal: "x" },
+        vendorWiring: true,
+      } as ContactWiring,
+    ];
+    const editedElc = setKeyWiring(elc, {
+      key: "k",
+      detect: "contact",
+      terminals: { a: "m.GP2", b: "m.GP3" },
+    });
+    expect(editedElc.keys[0]).toMatchObject({
+      vendorWiring: true,
+      terminals: { a: "m.GP2", b: "m.GP3", vendorTerminal: "x" },
+    });
+  });
+
+  it("validates pin ownership, provider pin ranges, duplicate ELC IDs and MAP layer references", async () => {
+    const phy = emptyPhy();
+    phy.root = [key("k")];
+    const p = await createProject(phy);
+    p.elc.providers = [
+      { id: "m", kind: "mcu", part: "RP2040" },
+      { id: "m", kind: "mcu", part: "RP2040" },
+      { id: "mux", kind: "analog-mux", channels: 2, select: ["missing.X"], common: "m.GP30" },
+    ];
+    p.elc.keys = [
+      { key: "k", detect: "contact", terminals: { a: "mux.2", b: "missing.P" } },
+      { key: "k", detect: "contact", terminals: { a: "VCC", b: "GND" } },
+    ];
+    p.elc.ledChains = [
+      { id: "chain", data: "m.GP0", order: [] },
+      { id: "chain", data: "m.GP1", order: [] },
+    ];
+    p.map.layers[0]!.keymap = [{ keyId: "k", keycode: "MO(Missing)" }];
+    const codes = new Set(validateProject(p).map((issue) => issue.code));
+    for (const code of [
+      "duplicate-provider-id",
+      "duplicate-key-wiring",
+      "duplicate-led-chain-id",
+      "missing-pin-provider",
+      "unknown-provider-pin",
+      "missing-map-layer-reference",
+    ])
+      expect(codes.has(code), code).toBe(true);
+    const unknownPart = validateProject({
+      ...p,
+      elc: {
+        ...p.elc,
+        providers: [{ id: "custom", kind: "mcu", part: "UnknownPart" }],
+        keys: [{ key: "k", detect: "contact", terminals: { a: "custom.any_pin", b: "VCC" } }],
+        ledChains: [],
+      },
+    });
+    expect(unknownPart.some((issue) => issue.code === "unknown-provider-pin")).toBe(false);
+    expect(() => setProvider(p.elc, { id: "bad.id", kind: "mcu", part: "RP2040" })).toThrow();
+  });
+
+  it("selects nested variants and treats sibling alternatives as exclusive", async () => {
+    const phy = emptyPhy();
+    phy.root = [
+      variantGroup("outer", "outer-a", [
+        [
+          "outer-a",
+          "A",
+          [
+            key("common"),
+            variantGroup("inner", "inner-a", [
+              ["inner-a", "IA", [key("ia")]],
+              ["inner-b", "IB", [key("ib")]],
+            ]),
+          ],
+        ],
+        ["outer-b", "B", [key("other")]],
+      ]),
+    ];
+    const p = await createProject(phy);
+    p.idx.order = ["common", "ia", "ib", "other"];
+    p.output.variantSelection = { outer: "outer-a", inner: "inner-b" };
+    p.elc.providers = [{ id: "m", kind: "mcu", part: "RP2040" }];
+    p.output.matrix = { rowPins: ["m.GP0", "m.GP2"], colPins: ["m.GP1", "m.GP3"] };
+    p.elc.keys = ["common", "ia", "ib", "other"].map((id) => ({
+      key: id,
+      detect: "contact",
+      terminals: id === "common" || id === "other" ? { a: "m.GP2", b: "m.GP3" } : { a: "m.GP0", b: "m.GP1" },
+      diode: "b-to-a",
+    }));
+    p.map.layers[0]!.keymap = ["common", "ia", "ib", "other"].map((keyId) => ({ keyId, keycode: "KC_A" }));
+    expect(validateProject(p).some((issue) => issue.code === "wiring-collision")).toBe(false);
+    const generated = generateMockTarget(p);
+    expect(generated.target?.idx).toEqual(["common", "ib"]);
+    expect(p.idx.order).toEqual(["common", "ia", "ib", "other"]);
+  });
+
+  it("uses the independently calculated JCS checksum and reports stale references", async () => {
+    const phy = emptyPhy();
+    expect(await makePhyReference(phy)).toEqual({
+      source: "project:phy",
+      checksum: "sha256-jcs:277e45f2cae4b3883480599c5569e73fbeec9e1a22bfb9bc323aecc4cb91d843",
+    });
+    const p = await createProject(phy);
+    p.phy.metadata.name = "changed after reference creation";
+    const loaded = await loadProject(JSON.stringify(p));
+    expect(
+      loaded.errors.filter((issue) => issue.code === "phy-reference-mismatch").map((issue) => issue.path),
+    ).toEqual(["/idx/phyReference", "/elc/phyReference", "/map/phyReference"]);
+  });
+});