fix(admin-service): 增加 multer fileSize 限制 500MB，支持 APK/IPA 上传

FileInterceptor upload/parse 均未设置文件大小限制，可能导致 multer 默认
内存保护触发。与 Nginx client_max_body_size 500m 保持一致。

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

backend/services/admin-service/src/interface/http/controllers/admin-version.controller.ts

@@ -83,7 +83,7 @@ export class AdminVersionController {
   }
 
   @Post('upload')
-  @UseInterceptors(FileInterceptor('file'))
+  @UseInterceptors(FileInterceptor('file', { limits: { fileSize: 500 * 1024 * 1024 } }))
   @ApiConsumes('multipart/form-data')
   @ApiOperation({ summary: 'Upload APK/IPA and create version' })
   async uploadVersion(
@@ -148,7 +148,7 @@ export class AdminVersionController {
   }
 
   @Post('parse')
-  @UseInterceptors(FileInterceptor('file'))
+  @UseInterceptors(FileInterceptor('file', { limits: { fileSize: 500 * 1024 * 1024 } }))
   @ApiConsumes('multipart/form-data')
   @ApiOperation({ summary: 'Parse APK/IPA without saving (preview metadata)' })
   async parsePackage(@UploadedFile() file: Express.Multer.File) {