fix(gateway): add missing @Inject() decorators causing silent startup hang (#109)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

apps/gateway/src/agent/provider.service.ts

@@ -8,7 +8,7 @@ export class ProviderService implements OnModuleInit {
   private readonly logger = new Logger(ProviderService.name);
   private registry!: ModelRegistry;
 
-  async onModuleInit(): Promise<void> {
+  onModuleInit(): void {
     const authStorage = AuthStorage.inMemory();
     this.registry = new ModelRegistry(authStorage);