# WBV2-P1114-000: Grease Pencil module

- task: `WBV2-P1114-000`
- parent: `WBV2-P1113-000`
- status: `in_progress`
- gap: `workflow:module_grease_pencil`
- ownerFamily: `DRAWING`
- targetImplementationClass: `LOCAL_EXACT`

## 目标

按功能模块验证 Grease Pencil layer/frame/stroke reader、稳定 ID 校验、Main mutation 和 roundtrip recovery。

## 输入与范围

- Blender Main/API/reader: `blender-5.2.0/source/blender/web_engine/web_engine_main_state.cpp`, `blender-5.2.0/source/blender/web_engine/web_engine_main_state.h`, `blender-5.2.0/source/blender/web_engine/web_engine_api.cpp`, `blender-5.2.0/source/blender/web_engine/web_engine_blend_reader.cpp`
- Protocol: `web/protocol/scene-ir.ts`, `web/protocol/grease-pencil.ts`, `web/protocol/grease-pencil-reorder.ts`, `web/protocol/grease-pencil-selection.ts`, `web/protocol/grease-pencil-marquee.ts`
- Viewport/UI: `web/app/src/app/App.tsx`, `web/app/src/three-adapter/grease-pencil.ts`, `web/app/src/three-adapter/viewport.ts`, `web/app/src/three-adapter/offscreen-viewport.ts`

## 验收

```bash
npm --prefix web run test:grease-pencil-reorder
npm --prefix web run test:grease-pencil
npm --prefix web run typecheck
```

必须记录 layer/frame Main mutation、forged/occupied/stale 负例、undo/redo、save/reopen、稳定 ID 和 Chromium。selection/marquee viewport 集成的现有失败保持显式后续项，不得放宽断言。

## 交付与回滚

- Receipt: `tests/golden/WBV2-P1114-000/module-receipt.json`
- Manifest: `tests/golden/WBV2-P1114-000/manifest.json`
- Status: `docs/status/WBV2-P1114-000.md`
- 回滚：恢复 P1113 manifest 为 queue parent。