# WBV2-P27-002: switch verification pointer to implementation-first continuation

- task: WBV2-P27-002
- parent: WBV2-P27-001
- status: done
- gap: workflow:implementation_first_continuation
- ownerFamily: PROGRAM
- targetImplementationClass: SOURCE_BACKED

## 目标

Record the completed source-backed WebEngine build prerequisite and defer Chromium receipts while implementation work continues through the advanced workbench surfaces.

## 输入与范围

- Source build report: `tests/golden/WBV2-P27-002/source-build-report.json`
- Source build log: `tests/golden/WBV2-P27-002/source-build.log`
- Existing parent batch plan: `tests/golden/WBV2-P27-001/verification-batch-plan.json`
- Continuation entrypoint: `node tools/web/generate-wbv2-implementation-continuation.mjs --write`

## 验收

- source-built WebEngine JS/WASM is available in the application vendor path
- no Chromium production behavior is executed in this implementation handoff
- no completion overlay or parity reduction is written
- original 6900 inventory and provenance remain read-only
- malformed, unsupported, hash-drift or false-completion input never advances parity
- `node tools/web/check-task-context.mjs --task WBV2-P27-002 --write`

## 交付与回滚

- Report: `tests/golden/WBV2-P27-002/implementation-mode-report.json`
- Manifest: `tests/golden/WBV2-P27-002/manifest.json`
- Rollback: restore P27-001 as queue parent and leave P27-002 in_progress.