fix: bump simple-git to 3.32.3 and use ConfigService for giteaApiBaseUrl

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/api/src/gatekeeper/gatekeeper.service.ts

@@ -12,7 +12,10 @@ export interface ReviewResult {
 @Injectable()
 export class GatekeeperService {
   private readonly logger = new Logger(GatekeeperService.name);
-  private readonly giteaApiBaseUrl = "https://git.mosaicstack.dev/api/v1";
+
+  private get giteaApiBaseUrl(): string {
+    return `${this.configService.getOrThrow<string>('GITEA_URL')}/api/v1`;
+  }
 
   constructor(
     private readonly prisma: PrismaService,