# WBV2-P1104-000: verify_compositor_sequencer_module

- task: WBV2-P1104-000
- parent: WBV2-P1103-000
- status: in_progress
- gap: workflow:module_compositor_sequencer
- ownerFamily: MEDIA
- targetImplementationClass: LOCAL_EXACT
- moduleId: COMPOSITOR_SEQUENCER

## 目标

Verify the source-backed compositor and sequencer module through golden, unsupported-gate and media recovery cases.

## 输入与范围

- Source paths:
- `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`
- `web/protocol/compositor.ts`
- `web/protocol/sequencer.ts`
- `web/app/src/workers/web-engine.worker.ts`
- `web/app/src/app/App.tsx`
- Reused receipt: `tests/golden/WBV2-P29-003/manifest.json`
- Implementation and verification entrypoint: `node tools/web/run-wbv2-module-task.mjs --task WBV2-P1104-000 --write`

## 验收

Positive cases: compositor node graph, sequencer still-image timeline, media cache contract
Negative boundaries: unsupported compositor node, invalid sequencer strip, stale media revision, movie codec unavailable
Recovery: worker restart, save/reopen, media cache replay, movie codec blocked without READY receipt
Commands:
- `npm --prefix web run test:compositor-node-golden`
- `npm --prefix web run test:compositor-unsupported-gate`
- `npm --prefix web run test:sequencer-main-reader`
- `node --test web/tests/unit/sequencer-media-cache.test.mjs`
- `npm --prefix web run test:e2e -- --workers=1 tests/e2e/smoke.spec.ts -g "N-021 sequencer|real Blender 5.2 sequencer"`
- `npm --prefix web run typecheck`

Malformed or unsupported input must fail closed. Reused implementation evidence is hash-bound; Chromium is the only browser and full-family parity remains false.

## 交付与回滚

- Reports: `tests/golden/WBV2-P1104-000/`
- Manifest: `tests/golden/WBV2-P1104-000/manifest.json`
- Status: `docs/status/WBV2-P1104-000.md`
- Rollback: restore WBV2-P1103-000 as queue parent and leave this module in_progress.