Continue WBV2 module parity through P11

docs/tasks/WBV2-P11-002.md

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+# WBV2-P11-002: Modifier parameter and apply family
+
+- task: WBV2-P11-002
+- parent: WBV2-P11-001
+- status: in_progress
+- gap: workflow:modifier_parameter_apply_family
+- ownerFamily: MODIFIER
+- targetImplementationClass: LOCAL_EXACT
+
+## 目标
+
+Extend the real Modifier Main path from enable/disable to bounded parameter and apply transactions.
+
+## 输入与范围
+
+- Modifier fixture: `tests/files/web/generated/WBV2-P4-001-MODIFIER.DECLARED_SLICES.blend`
+- Existing native receipt: `tests/golden/WBV2-P10-002/native-engine-receipt-report.json`
+- Modifier protocol: `blender-5.2.0/source/blender/web_engine/web_engine_main_state.cpp`
+
+## 验收
+
+- `npm --prefix web run test:e2e -- --workers=1 tests/e2e/wbv2-modifier-parameter-production.spec.ts`
+- `node tools/web/generate-wbv2-modifier-parameter-receipt.mjs --write`
+- `node tools/web/check-task-context.mjs --task WBV2-P11-002 --write`
+
+Malformed, unsupported modifier, stale revision, failed apply, non-exact save/reopen, or missing evaluated Main mutation must keep in_progress and must not advance nextTask.
+
+## 交付与回滚
+
+- Reports: `tests/golden/WBV2-P11-002/`
+- Manifest: `tests/golden/WBV2-P11-002/manifest.json`
+- Rollback: restore P11-001 as queue parent without modifying Mesh evidence.