# WBV2-P1122-000: engine runtime module

- task: `WBV2-P1122-000`
- parent: `WBV2-P1121-000`
- status: `in_progress`
- gap: `workflow:module_engine_runtime`
- ownerFamily: `RUNTIME`
- targetImplementationClass: `LOCAL_EXACT`

## 目标

验证 variant manifest、WASM Main ABI、fallback 和 Worker crash recovery。

## 输入与范围

- Native: `blender-5.2.0/source/blender/web_engine/web_engine_api.cpp`, `blender-5.2.0/source/blender/web_engine/web_engine_main_state.cpp`, `blender-5.2.0/source/blender/web_engine/CMakeLists.txt`
- Protocol/runtime: `web/protocol/engine-variant.ts`, `web/protocol/worker-fault.ts`, `web/protocol/save-transaction.ts`, `web/app/src/engine-client/engine-variant-bootstrap.ts`, `web/app/src/engine-client/browser-engine-variant-session.ts`, `web/app/src/engine-client/WebEngineClient.ts`, `web/app/src/workers/web-engine.worker.ts`, `web/app/src/workers/storage.worker.ts`

## 验收

```bash
npm --prefix web run test:engine-manifest-v2
npm --prefix web run test:engine-variant-selection
npm --prefix web run test:engine-variant-fallback
npm --prefix web run test:engine-variant-install
npm --prefix web run test:e2e -- --workers=1 tests/e2e/wbv2-native-engine-production.spec.ts tests/e2e/worker-crash-recovery.spec.ts
npm --prefix web run typecheck
```

记录 manifest/ABI 正例、malformed/mixed-version/fallback 负例、Worker crash/restart、operation-log restore 和 Chromium；不推导 pthread parity。

## 交付与回滚

- Receipt: `tests/golden/WBV2-P1122-000/module-receipt.json`
- Manifest: `tests/golden/WBV2-P1122-000/manifest.json`
- Status: `docs/status/WBV2-P1122-000.md`
- 回滚：恢复 P1121 manifest 为 queue parent。