fix(admin-service): 排除移动端API路由的全局前缀

移动端APP需要访问 /api/app/version/check，而不是 /api/v1/api/app/version/check
使用 setGlobalPrefix 的 exclude 选项排除移动端路由

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

backend/services/admin-service/src/main.ts

@@ -1,5 +1,5 @@
 import { NestFactory } from '@nestjs/core'
-import { ValidationPipe, Logger } from '@nestjs/common'
+import { ValidationPipe, Logger, RequestMethod } from '@nestjs/common'
 import { SwaggerModule, DocumentBuilder } from '@nestjs/swagger'
 import { AppModule } from './app.module'
 
@@ -7,8 +7,13 @@ async function bootstrap() {
   const logger = new Logger('Bootstrap')
   const app = await NestFactory.create(AppModule)
 
-  // Global prefix
-  app.setGlobalPrefix('api/v1')
+  // Global prefix (exclude mobile API routes that need custom paths)
+  app.setGlobalPrefix('api/v1', {
+    exclude: [
+      { path: 'api/app/version/(.*)', method: RequestMethod.ALL },
+      { path: 'api/app/version/check', method: RequestMethod.GET },
+    ],
+  })
 
   // Validation
   app.useGlobalPipes(