Advance WBV2 domain parity through P12

docs/tasks/WBV2-P12-000.md

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+# WBV2-P12-000: domain expansion continuation root
+
+- task: WBV2-P12-000
+- parent: WBV2-P11-004
+- status: done
+- gap: workflow:authorize_domain_expansion_continuation
+- ownerFamily: PROGRAM
+- targetImplementationClass: LOCAL_BOUNDED
+
+## 目标
+
+Authorize the next high-value Blender Web domains after P11 established engine-bound Mesh, Modifier, and Asset evidence. P12 uses existing source receipts first, then adds only bounded native/WASM domain behavior.
+
+## 验收
+
+- `node tools/web/generate-wbv2-domain-expansion-root.mjs`
+- `node tools/web/check-execution-control-plane.mjs`
+- `node tools/web/check-v2-task-index.mjs`
+
+## 交付与回滚
+
+- Reports: `tests/golden/WBV2-P12-000/`
+- Manifest: `tests/golden/WBV2-P12-000/manifest.json`
+- Rollback: restore P11-004 as queue parent without rewriting prior evidence.

docs/tasks/WBV2-P12-001.md

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+# WBV2-P12-001: reconcile existing capability ledger
+
+- task: WBV2-P12-001
+- parent: WBV2-P12-000
+- status: in_progress
+- gap: workflow:reconcile_existing_capability_ledger
+- ownerFamily: PARITY
+- targetImplementationClass: LOCAL_BOUNDED
+
+## 目标
+
+Aggregate existing WBV2 P1-P6 and P10-P11 manifests into a conservative capability ledger without inventing claims or rewriting historical receipts.
+
+## 输入与范围
+
+- Capability matrix: `docs/BLENDER_WASM_CAPABILITY_MATRIX_TEMPLATE.json`
+- Existing WBV2 manifests: `tests/golden/WBV2-P1-001/manifest.json` through completed domain manifests
+- P11 gate: `tests/golden/WBV2-P11-004/engine-module-gate-report.json`
+- Inventory map: `tests/golden/WBV2-P0-002/parity-map.json`
+
+## 验收
+
+- `node tools/web/generate-wbv2-capability-ledger.mjs --write`
+- `node tools/web/check-wbv2-capability-ledger.mjs`
+- `node tools/web/check-task-context.mjs --task WBV2-P12-001 --write`
+
+Malformed manifest, hash drift, unsupported evidence status, false parity claim, or inventory over-claim must keep in_progress and must not advance nextTask.
+
+## 交付与回滚
+
+- Reports: `tests/golden/WBV2-P12-001/`
+- Status: `docs/status/WBV2-P12-001.md`
+- Manifest: `tests/golden/WBV2-P12-001/manifest.json`
+- Rollback: restore P12-000 as queue parent; preserve all source manifests.

docs/tasks/WBV2-P12-002.md

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+# WBV2-P12-002: scene and object engine receipt
+
+- task: WBV2-P12-002
+- parent: WBV2-P12-001
+- status: in_progress
+- gap: workflow:scene_object_workflow_engine_receipt
+- ownerFamily: EDITOR
+- targetImplementationClass: LOCAL_EXACT
+
+## 目标
+
+Bind object visibility and transform edits to the compiled WebEngine WASM Main with save/reopen and revision guards.
+
+## 输入与范围
+
+- Scene fixture: `tests/files/web/generated/WBV2-P2-002-OBJECT.TRANSFORM_HIERARCHY.blend`
+- Source oracle: `tests/golden/WBV2-P2-002/object-transform-report.json`
+- Client: `web/app/src/engine-client/WebEngineClient.ts`
+
+## 验收
+
+- `npm --prefix web run test:e2e -- --workers=1 tests/e2e/wbv2-scene-object-production.spec.ts`
+- `node tools/web/generate-wbv2-scene-object-receipt.mjs --write`
+- `node tools/web/check-task-context.mjs --task WBV2-P12-002 --write`
+
+Malformed, stale, locked, cycle, unsupported, non-Chromium, or non-exact save/reopen cases must keep in_progress and must not advance nextTask.
+
+## 交付与回滚
+
+- Reports: `tests/golden/WBV2-P12-002/`
+- Status: `docs/status/WBV2-P12-002.md`
+- Manifest: `tests/golden/WBV2-P12-002/manifest.json`
+- Rollback: restore P12-001 as queue parent.

docs/tasks/WBV2-P12-003.md

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+# WBV2-P12-003: material and animation engine receipt
+
+- task: WBV2-P12-003
+- parent: WBV2-P12-002
+- status: in_progress
+- gap: workflow:material_animation_engine_receipt
+- ownerFamily: AUTHORING
+- targetImplementationClass: LOCAL_EXACT
+
+## 目标
+
+Bind material Principled/texture and TRS keyframe edits to the compiled WebEngine WASM Main.
+
+## 输入与范围
+
+- Material fixture: `tests/files/web/generated/WBV2-P3-001-MATERIAL.PBR_UV.blend`
+- Animation fixture: `tests/files/web/generated/WBV2-P3-002-ANIMATION.TRS_ACTION.blend`
+- Existing reports: `tests/golden/WBV2-P3-001/material-report.json`, `tests/golden/WBV2-P3-002/animation-report.json`
+
+## 验收
+
+- `npm --prefix web run test:e2e -- --workers=1 tests/e2e/wbv2-material-animation-production.spec.ts`
+- `node tools/web/generate-wbv2-material-animation-receipt.mjs --write`
+- `node tools/web/check-task-context.mjs --task WBV2-P12-003 --write`
+
+Malformed graph, unsupported node, stale frame, missing image, non-Chromium, or non-exact save/reopen cases must keep in_progress and must not advance nextTask.
+
+## 交付与回滚
+
+- Reports: `tests/golden/WBV2-P12-003/`
+- Status: `docs/status/WBV2-P12-003.md`
+- Manifest: `tests/golden/WBV2-P12-003/manifest.json`
+- Rollback: restore P12-002 as queue parent.

docs/tasks/WBV2-P12-004.md

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+# WBV2-P12-004: viewport and non-mesh engine receipt
+
+- task: WBV2-P12-004
+- parent: WBV2-P12-003
+- status: in_progress
+- gap: workflow:viewport_nonmesh_engine_receipt
+- ownerFamily: VIEWPORT
+- targetImplementationClass: LOCAL_BOUNDED
+
+## 目标
+
+Bind viewport SceneIR and bounded non-mesh read/edit paths to the compiled WebEngine runtime with explicit unsupported boundaries.
+
+## 输入与范围
+
+- Viewport report: `tests/golden/WBV2-P2-004/viewport-report.json`
+- Non-mesh report: `tests/golden/WBV2-P4-003/sculpt-report.json`
+- WebEngine client: `web/app/src/engine-client/WebEngineClient.ts`
+
+## 验收
+
+- `npm --prefix web run test:e2e -- --workers=1 tests/e2e/wbv2-viewport-nonmesh-production.spec.ts`
+- `node tools/web/generate-wbv2-viewport-nonmesh-receipt.mjs --write`
+- `node tools/web/check-task-context.mjs --task WBV2-P12-004 --write`
+
+Unsupported data, malformed geometry, budget overflow, device loss, non-Chromium, or non-exact save/reopen cases must keep in_progress and must not advance nextTask.
+
+## 交付与回滚
+
+- Reports: `tests/golden/WBV2-P12-004/`
+- Status: `docs/status/WBV2-P12-004.md`
+- Manifest: `tests/golden/WBV2-P12-004/manifest.json`
+- Rollback: restore P12-003 as queue parent.

docs/tasks/WBV2-P12-005.md

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+# WBV2-P12-005: domain parity gate
+
+- task: WBV2-P12-005
+- parent: WBV2-P12-004
+- status: in_progress
+- gap: workflow:recompute_domain_parity_gate
+- ownerFamily: RELEASE
+- targetImplementationClass: LOCAL_BOUNDED
+
+## 目标
+
+Recompute domain parity from P10-P12 receipts while retaining explicit inventory and provenance limits.
+
+## 输入与范围
+
+- Capability ledger: `tests/golden/WBV2-P12-001/capability-ledger-report.json`
+- P11 gate: `tests/golden/WBV2-P11-004/engine-module-gate-report.json`
+- P12 domain receipts
+- Provenance approval: `docs/status/M12-PROVENANCE-EPOCH-2-APPROVAL.json`
+
+## 验收
+
+- `node tools/web/generate-wbv2-domain-parity-gate.mjs --write`
+- `node tools/web/check-task-context.mjs --task WBV2-P12-005 --write`
+
+Missing receipt, hash drift, false inventory completion, unsupported browser, undeclared claim, or false historical reproduction must keep in_progress and must not advance nextTask.
+
+## 交付与回滚
+
+- Reports: `tests/golden/WBV2-P12-005/`
+- Status: `docs/status/WBV2-P12-005.md`
+- Manifest: `tests/golden/WBV2-P12-005/manifest.json`
+- Rollback: restore P12-004 as queue parent.