feat: add quant engine WBS verification harness

spec/41_release_dag.yaml

@@ -2280,6 +2280,23 @@ dag:
       strict: false
       timeout_sec: 60
       warn_only: true
+    validate_quant_engine_wbs:
+      artifact_policy: keep
+      cache_key: validate_quant_engine_wbs_v1
+      command:
+      - python
+      - tools/validate_quant_engine_wbs_v1.py
+      depends_on: []
+      id: validate_quant_engine_wbs
+      inputs:
+      - tools/validate_quant_engine_wbs_v1.py
+      - spec/60_quant_engine_wbs.yaml
+      note: 퀀트 엔진 WBS 증거 게이트 — status=DONE 작업은 Temp/evidence/<TASK_ID>/verdict.json
+        gate=PASS 가 있어야 한다 (완료 주장 금지, 게이트 실행으로만 DONE).
+      outputs:
+      - Temp/quant_engine_wbs_v1.json
+      strict: true
+      timeout_sec: 60
     validate_specs:
       artifact_policy: keep
       cache_key: validate_specs_v1
@@ -2327,6 +2344,7 @@ execution_order:
   - validate_metric_alias_collision
   - validate_packaged_refs
   - validate_property_invariants
+  - validate_quant_engine_wbs
   - validate_renderer_no_calc
   - validate_runtime_source_whitelist
   - validate_sector_universe_monthly_refresh