Rebuild local Blender WASM environment and recovery evidence

docs/tasks/WBV2-P8-002.md

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+# WBV2-P8-002: close atomic Chromium receipts
+
+- task: WBV2-P8-002
+- parent: WBV2-P8-001
+- status: in_progress
+- gap: workflow:close_atomic_chromium_receipts
+- ownerFamily: PARITY
+- targetImplementationClass: LOCAL_BOUNDED
+
+## 目标
+
+Produce manifest-bound Chromium receipts for all 45 family behaviors by reusing verified WBV2 desktop/WASM/save-reopen evidence and running the shared production protocol in Chromium.
+
+## 输入与范围
+
+- Queue: `tests/golden/WBV2-P7-002/atomic-queue-desktop-report.json`
+- Existing receipts: `tests/golden/WBV2-P7-003/atomic-chromium-receipt-index.json`
+- Chromium runner: `web/tests/e2e/wbv2-atomic-recovery.spec.ts`
+
+## 验收
+
+npm --prefix web run test:e2e -- --workers=1 tests/e2e/wbv2-atomic-recovery.spec.ts
+node tools/web/generate-wbv2-recovery-receipts.mjs --write
+node tools/web/check-task-context.mjs --task WBV2-P8-002 --write
+
+Missing Chromium output, unsupported family mapping, source hash drift, or non-exact save/reopen must keep in_progress and must not advance nextTask.
+
+## 交付与回滚
+
+- Reports: `tests/golden/WBV2-P8-002/`
+- Status: `docs/status/WBV2-P8-002.md`
+- Manifest: `tests/golden/WBV2-P8-002/manifest.json`
+- Rollback: restore P8-001 as queue parent without modifying earlier evidence.