fix(api): resolve NestJS DI + ValidationPipe bugs from type-only imports

- Remove `type` modifier from imports used as DI constructor params
  across ~235 files (@Injectable, @Controller, @Module, @Catch,
  @CommandHandler, @QueryHandler, @EventsHandler, @WebSocketGateway).
  TypeScript emitDecoratorMetadata strips type-only imports, leaving
  Reflect.metadata with Function placeholder and breaking Nest DI.
- Fix controllers: DTOs used with @Body/@Query/@Param must be runtime
  imports so ValidationPipe can whitelist properties. Previously
  returned 400 "property X should not exist" on every request.
- Register ProjectsModule in AppModule (was defined but never wired).
- Add approve()/reject() methods to TransferListingEntity referenced by
  ModerateTransferListingHandler.
- Export BankTransferConfirmedEvent from payments barrel for
  subscription activation handler.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/api/src/app.module.ts

@@ -19,6 +19,7 @@ import { MessagingModule } from '@modules/messaging';
 import { HttpMetricsInterceptor, MetricsModule } from '@modules/metrics';
 import { NotificationsModule } from '@modules/notifications';
 import { PaymentsModule } from '@modules/payments';
+import { ProjectsModule } from '@modules/projects';
 import { ReportsModule } from '@modules/reports';
 import { ReviewsModule } from '@modules/reviews';
 import { SearchModule } from '@modules/search';
@@ -60,6 +61,7 @@ import { AppController } from './app.controller';
     McpIntegrationModule,
     MessagingModule,
     ReportsModule,
+    ProjectsModule,
     IndustrialModule,
     TransferModule,