Continue WBV2 module parity through P11

docs/tasks/WBV2-P11-004.md

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+# WBV2-P11-004: engine module parity gate
+
+- task: WBV2-P11-004
+- parent: WBV2-P11-003
+- status: in_progress
+- gap: workflow:recompute_engine_module_gate
+- ownerFamily: RELEASE
+- targetImplementationClass: LOCAL_BOUNDED
+
+## 目标
+
+Recompute engine-bound module claims from P10 and P11 receipts without claiming whole-inventory completion.
+
+## 输入与范围
+
+- P10 engine receipt: `tests/golden/WBV2-P10-002/native-engine-receipt-report.json`
+- P10 module matrix: `tests/golden/WBV2-P10-003/module-matrix-receipt-report.json`
+- P11 Mesh/Modifier/Asset receipts
+- Provenance approval: `docs/status/M12-PROVENANCE-EPOCH-2-APPROVAL.json`
+
+## 验收
+
+- `node tools/web/generate-wbv2-engine-module-gate.mjs --write`
+- `node tools/web/check-task-context.mjs --task WBV2-P11-004 --write`
+
+Missing receipt, hash drift, unsupported browser, false inventory completion, false historical reproduction, or undeclared capability claim must keep in_progress and must not advance nextTask.
+
+## 交付与回滚
+
+- Reports: `tests/golden/WBV2-P11-004/`
+- Status: `docs/status/WBV2-P11-004.md`
+- Manifest: `tests/golden/WBV2-P11-004/manifest.json`
+- Rollback: restore P11-003 as queue parent without modifying engine receipts.