feat(auth): add handler specs and improve auth infrastructure

Add unit tests for get-profile, get-agent-by-user-id, and verify-kyc handlers.
Improve OAuth service, local strategy, and repository implementations with
proper ConfigService injection and error handling.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/modules/auth/domain/value-objects/email.vo.ts

@@ -1,5 +1,4 @@
-import { Result } from '@modules/shared/domain/result';
-import { ValueObject } from '@modules/shared/domain/value-object';
+import { Result, ValueObject } from '@modules/shared';
 
 interface EmailProps {
   value: string;