Merge upstream/main - resolve conflicts

- auth.module.ts: keep HashService (upstream accidentally removed it)
- payload.types.ts: merge both - add upstream's clientId field
- claim-request-management.module.ts: keep RegistrarClaimMirrorController
- expert-initiated-blame.mirror.controller.ts: keep our clean version

Co-authored-by: Cursor <cursoragent@cursor.com>

src/common/auth/types/payload.types.ts

@@ -1,6 +1,7 @@
 export interface JwtPayload {
   sub: string;
   role: string;
+  clientId?: string;
   iat?: number;
   exp?: number;
 }