Scope update from repo-scoping refactor

SCOPE.md

@@ -28,7 +28,7 @@ Railiance is structured as five independent repos per OAS Stack layer. This repo
 
 ---
 
-## Out of Scope (per ADR-003)
+## Out of Scope
 
 - OS-level concerns → railiance-infra (S1)
 - Kubernetes runtime → railiance-cluster (S2)
@@ -76,7 +76,7 @@ Railiance is structured as five independent repos per OAS Stack layer. This repo
 
 ---
 
-## Related / Overlapping Repositories
+## Related / Overlapping
 
 - `railiance-platform` (S3) — pre-condition; provides services that S4 tooling depends on
 - `railiance-apps` (S5) — consumer of S4 CI/CD and templates