Advance deduplicated lighting capability coverage

docs/tasks/WBV2-P15-002.md

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+# WBV2-P15-002: lighting_fields_engine_receipt
+
+- task: WBV2-P15-002
+- parent: WBV2-P15-001
+- status: in_progress
+- gap: capability:RENDER.LIGHTING_FIELDS
+- ownerFamily: RENDER
+- targetImplementationClass: LOCAL_EXACT
+
+## 目标
+
+Bind Camera, Light, and World edits, undo/redo, and exact save/reopen to the compiled WASM Main in Chromium.
+
+## 输入与范围
+
+- Focused source: `tests/golden/WBV2-P15-001/lighting-selection-report.json`
+- Production test: `web/tests/e2e/wbv2-lighting-fields-production.spec.ts`
+- Production entrypoint: `npm --prefix web run test:e2e -- --workers=1 tests/e2e/wbv2-lighting-fields-production.spec.ts`
+
+## 验收
+
+- camera/light/world fields match the bounded expected values
+- undo/redo revisions are sequential
+- save/reopen is exact
+- malformed values fail closed without Main mutation
+- Chromium is the only browser
+- `node tools/web/check-task-context.mjs --task WBV2-P15-002 --write`
+
+## 交付与回滚
+
+- Reports: `tests/golden/WBV2-P15-002/`
+- Status: `docs/status/WBV2-P15-002.md`
+- Manifest: `tests/golden/WBV2-P15-002/manifest.json`
+- Rollback: restore P15-001 as queue parent.