mock: スタビ位置は、どのサイズも何も選ばない状態から始める(T-30 単位8)

候補が1つのサイズも既定で選ばない。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017yoUu9Xd8dhwyQdCfKfaXG

mock/src/domain/stabilizers.ts

@@ -44,11 +44,6 @@ export function stabilizerCandidates(size: Size): StabilizerCandidate[] {
   const length = Math.max(size.w, size.h);
   return TABLE.find((row) => row.lengths.some((l) => Math.abs(l - length) < EPS))?.candidates ?? [];
 }
-/** A size with a single candidate shows it until chosen otherwise; several start unselected. */
-export function defaultStabilizerSelection(size: Size): string[] {
-  const candidates = stabilizerCandidates(size);
-  return candidates.length === 1 ? [candidates[0]!.id] : [];
-}
 /** 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,

mock/src/ui/phy/logic.ts

@@ -1,11 +1,6 @@
 import type { KeyNode, Node, PhyFile, Transform } from "../../domain/phy";
 import type { ProjectFile } from "../../domain/project";
-import {
-  defaultStabilizerSelection,
-  stabilizerCandidates,
-  stabilizerPoints,
-  switchPoint,
-} from "../../domain/stabilizers";
+import { stabilizerCandidates, stabilizerPoints, switchPoint } from "../../domain/stabilizers";
 import { apply, compose, inverse, matrix, type Affine } from "../../domain/geometry";
 
 export function normalizeSelection(file: PhyFile, ids: string[]): string[] {
@@ -337,10 +332,9 @@ export function stabilizerSelections(project: ProjectFile): StabilizerSelections
   const ui = project.ui as { phy?: { stabilizers?: StabilizerSelections } } | undefined;
   return ui?.phy?.stabilizers ?? {};
 }
-/** 記録がなければサイズの既定。サイズが変わって候補にない記録は捨てて読む。 */
+/** 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];
-  if (!ids) return defaultStabilizerSelection(key.size);
+  const ids = selections[key.id] ?? [];
   const known = new Set(stabilizerCandidates(key.size).map((c) => c.id));
   return ids.filter((id) => known.has(id));
 }