test(auth): add unit tests for KYC presigned upload and submit handlers

Cover GenerateKycUploadUrlsHandler (10 tests) and SubmitKycHandler (10 tests):
presigned URL flow, legacy file upload, status validation, error handling.

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

apps/api/src/modules/mcp/mcp.module.ts

@@ -11,6 +11,7 @@ import { McpTransportController } from './presentation/mcp-transport.controller'
     AuthModule,
     McpCoreModule.forRoot({
       aiServiceBaseUrl: process.env['AI_SERVICE_URL'] || 'http://localhost:8000',
+      apiBaseUrl: process.env['API_BASE_URL'] || 'http://localhost:3001/api/v1',
       typesenseCollectionName: 'listings',
       skipDefaultController: true,
     }),