Scope update from repo-scoping refactor

SCOPE.md

@@ -30,7 +30,7 @@ Railiance is structured as five independent repos per OAS Stack layer. This repo
 
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-## Out of Scope (per ADR-003)
+## Out of Scope
 
 - OS-level concerns → railiance-infra (S1)
 - Kubernetes runtime → railiance-cluster (S2)
@@ -80,7 +80,7 @@ Railiance is structured as five independent repos per OAS Stack layer. This repo
 
 ---
 
-## Related / Overlapping Repositories
+## Related / Overlapping
 
 - `railiance-cluster` (S2) — pre-condition; PostgreSQL was previously managed here (being extracted to S3)
 - `railiance-apps` (S5) — consumes database and cache services from S3