docs(ui): enrich component preservation map

docs/modules/ui/component-preservation-map/components/dead/vex-studio/README.md

@@ -14,5 +14,11 @@ Keep conflict resolution workflows, rationale capture, and consensus tooling tha
 ## Likely Destination
 /admin/vex-hub
 
+## Corroborating Docs
+- Current UI owner and merge target: `../../../../policy-decisioning-studio/README.md`
+- Canonical VEX owner module: `../../../../../vex-hub/README.md`
+- VEX trust and evidence linkage in policy: `../../../../../policy/guides/vex-trust-model.md`
+- VEX operations/runbook context: `../../../../../operations/runbooks/vex-ops.md`
+
 ## Components
 - [VexConflictStudioComponent](../features/vex-studio/VexConflictStudioComponent.md) - `merge`, features/vex-studio/vex-conflict-studio.component.ts