Record P08 current candidate and Opus shared-preview support scope

docs/spec/acceptance/P08-03-RTPREVIEW.json

@@ -0,0 +1,25 @@
+{
+  "id": "P08-03-RTPREVIEW",
+  "requirement_id": "P08-03",
+  "counting_scope": "Supporting implementation for existing P08-03 only. Zero added original units; 30 packages/88 units; no partial credit.",
+  "authority": "Original P08-03 preview/refusal agreement plus owner standing full implementation instruction; actual Opus scope direction OPUS_SHARED_RUNTIME_SCOPE_DIRECTION.json",
+  "scope": [
+    "autoload/simulation_runtime.gd",
+    "tests/transport/test_runtime_build_preview.gd",
+    "tests/transport/test_runtime_build_preview.gd.uid"
+  ],
+  "required_conditions": [
+    "One shared read-only precheck for preview and build preserves operations/NOT_FOUND/unsupported/origin/landing/elevator/rotation order and actual codes/messages",
+    "Unknown definition and prior operations failure preserve precedence without crashing",
+    "Typed snapshot bytes, command log and event count unchanged by preview",
+    "Preview and actual submission agree on required precheck cases, with meaningful negative/purity/precedence tests"
+  ],
+  "verification": "Worker static diff review only; Root owns guarded isolated targeted native and impact tests; independent Opus and integration required. A source-presence check alone is not acceptance.",
+  "forbidden": [
+    "No rule values, codes/messages/order changes",
+    "No construction service/data/original requirement edits",
+    "No main/UI/source edits beyond these three files",
+    "No worker native/full/Godot runs or new all-regression copies"
+  ],
+  "reuse": "Use submitted 4775001 concrete Runtime/test patch as seed; correct actual Opus findings; leave P08 UI hunks for existing task."
+}