fix claim validation and expert branch scoping

src/expert-blame/expert-blame.service.ts

@@ -614,9 +614,24 @@ export class ExpertBlameService {
     )) as Record<string, unknown>[];
 
     // Scope to this reviewer's insurance company via blame party clientId
-    const visibleCases = allSealed.filter((doc) =>
+    const tenantVisibleCases = allSealed.filter((doc) =>
       blameCaseTouchesClient(doc, clientKey),
     );
+    const visibleCases = (
+      await Promise.all(
+        tenantVisibleCases.map(async (doc) => {
+          try {
+            await this.requestManagementService.assertFileReviewerBranchAccess(
+              doc,
+              actor.sub,
+            );
+            return doc;
+          } catch {
+            return null;
+          }
+        }),
+      )
+    ).filter((doc): doc is Record<string, unknown> => doc != null);
 
     const pagedResult = await this.paginateBlameListV2(visibleCases, query);
     return pagedResult;