Advance WBV2 high-value domains through P13

docs/tasks/WBV2-P13-004.md

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+# WBV2-P13-004: simulation_render_media_engine_receipt
+
+- task: WBV2-P13-004
+- parent: WBV2-P13-003
+- status: in_progress
+- gap: workflow:simulation_render_media_engine_receipt
+- ownerFamily: ADVANCED
+- targetImplementationClass: LOCAL_BOUNDED
+
+## 目标
+
+Execute the bounded ADVANCED domain using existing source evidence and the compiled WebEngine runtime.
+
+## 输入与范围
+
+- Focused input: `tests/golden/WBV2-P4-004/simulation-report.json`
+- Existing source receipt: `tests/golden/WBV2-P5-003/server-job-report.json`
+- Production entrypoint: `web/tests/e2e/wbv2-advanced-domain-production.spec.ts`
+
+## 验收
+
+- `node tools/web/generate-wbv2-advanced-domain-receipt.mjs --write`
+- `node tools/web/check-task-context.mjs --task WBV2-P13-004 --write`
+
+Malformed or unsupported input, hash drift, non-Chromium execution, non-exact save/reopen, false inventory completion, or missing Main mutation must keep in_progress and must not advance nextTask.
+
+## 交付与回滚
+
+- Reports: `tests/golden/WBV2-P13-004/`
+- Status: `docs/status/WBV2-P13-004.md`
+- Manifest: `tests/golden/WBV2-P13-004/manifest.json`
+- Rollback: restore WBV2-P13-003 as queue parent.