feat: harden CASAN production install lifecycle

.specify/level5/central-governance/policy-bundle.yaml

@@ -29,18 +29,18 @@ policies:
     owner: agentops-team
     required: true
 
-  - id: l5-tool-registry
-    path: packages/casan-harness/level5/tool-registry.yaml
+  - id: runtime-tool-registry
+    path: packages/casan-harness/config/tool-registry.yaml
     owner: platform-team
     required: true
 
-  - id: l5-fallback
-    path: packages/casan-harness/level5/model-fallback.yaml
+  - id: runtime-fallback
+    path: packages/casan-harness/config/model-fallback.yaml
     owner: platform-team
     required: true
 
-  - id: l5-drift
-    path: packages/casan-harness/level5/drift-policy.yaml
+  - id: runtime-drift
+    path: packages/casan-harness/config/drift-policy.yaml
     owner: quality-team
     required: true