# WBV2-P8-004: recompute recovery release gate

- task: WBV2-P8-004
- parent: WBV2-P8-003
- status: in_progress
- gap: workflow:recompute_recovery_release_gate
- ownerFamily: RELEASE
- targetImplementationClass: LOCAL_BOUNDED

## 目标

Recompute the final release decision from 45 atomic Chromium receipts and the explicit M12 provenance epoch.

## 输入与范围

- Atomic receipts: `tests/golden/WBV2-P8-002/atomic-receipt-index.json`
- M12 epoch: `tests/golden/WBV2-P8-003/m12-provenance-epoch.json`
- Release gate: `tools/web/check-wbv2-recovery-release-gate.mjs`

## 验收

node tools/web/check-wbv2-recovery-release-gate.mjs --write
node tools/web/check-task-context.mjs --task WBV2-P8-004 --write

Missing receipt, provenance ambiguity, hash drift, unsupported release claim, or governance failure must keep in_progress and must not advance nextTask.

## 交付与回滚

- Reports: `tests/golden/WBV2-P8-004/`
- Status: `docs/status/WBV2-P8-004.md`
- Manifest: `tests/golden/WBV2-P8-004/manifest.json`
- Rollback: restore P8-003 as queue parent and preserve all historical evidence.