fix(update): 修复 app 版本更新检查路径 + 解决 MinIO presigned URL 24h 过期

Mobile 端:
- version_checker.dart: /api/app/... → /api/v1/app/... (与 Kong 路由匹配)

Backend (admin-service):
- AppVersion 实体新增 storage_key 字段（已执行 ALTER TABLE）
- FileStorageService: uploadFile 不再返回 presigned URL，只返回 objectName
- AdminVersionController: upload 后保存 storageKey，downloadUrl 设为
  /api/v1/app/version/download/{id}（稳定 API 地址，不过期）
- AppVersionController.downloadVersion: storageKey 存在时每次请求动态
  生成 presigned URL（1小时有效，只需够下载完成即可）
- AppVersionService.checkUpdate: 有 storageKey 的版本统一返回 API 下载地址

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

backend/services/admin-service/src/application/services/app-version.service.ts

@@ -24,7 +24,10 @@ export class AppVersionService {
       forceUpdate: latest.isForceUpdate && latest.isEnabled,
       version: latest.versionName,
       versionCode: latest.versionCode,
-      downloadUrl: latest.downloadUrl,
+      // Use stable API download endpoint; storageKey versions generate fresh presigned URL on download
+      downloadUrl: latest.storageKey
+        ? `/api/v1/app/version/download/${latest.id}`
+        : latest.downloadUrl,
       fileSize: Number(latest.fileSize),
       fileSizeFriendly: this.formatFileSize(BigInt(latest.fileSize)),
       sha256: latest.fileSha256,
@@ -54,6 +57,7 @@ export class AppVersionService {
     versionName: string;
     buildNumber: string;
     downloadUrl: string;
+    storageKey?: string;
     fileSize: string;
     fileSha256: string;
     changelog: string;

backend/services/admin-service/src/application/services/file-storage.service.ts

@@ -49,16 +49,8 @@ export class FileStorageService {
           : 'application/octet-stream',
     });
 
-    // Generate presigned download URL (24h)
-    const downloadUrl = await this.minio.presignedGetObject(
-      BUCKET,
-      objectName,
-      24 * 3600,
-    );
-
     return {
       objectName,
-      downloadUrl,
       fileSize: buffer.length.toString(),
       sha256,
     };

backend/services/admin-service/src/domain/entities/app-version.entity.ts

@@ -29,6 +29,9 @@ export class AppVersion {
   @Column({ name: 'download_url', type: 'text' })
   downloadUrl: string;
 
+  @Column({ name: 'storage_key', type: 'text', nullable: true })
+  storageKey: string | null;
+
   @Column({ name: 'file_size', type: 'bigint', default: 0 })
   fileSize: string; // bigint as string in TypeORM
 

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

@@ -128,7 +128,8 @@ export class AdminVersionController {
       versionCode,
       versionName,
       buildNumber,
-      downloadUrl: uploadResult.downloadUrl,
+      storageKey: uploadResult.objectName,
+      downloadUrl: '', // will be updated after id is known
       fileSize: uploadResult.fileSize,
       fileSha256: uploadResult.sha256,
       changelog: body.changelog || '',
@@ -138,7 +139,12 @@ export class AdminVersionController {
       createdBy: req.user?.sub,
     });
 
-    return { code: 0, data: version };
+    // Set stable download URL pointing to this service's download endpoint
+    const updated = await this.versionService.updateVersion(version.id, {
+      downloadUrl: `/api/v1/app/version/download/${version.id}`,
+    });
+
+    return { code: 0, data: updated };
   }
 
   @Post('parse')

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

@@ -35,10 +35,14 @@ export class AppVersionController {
   }
 
   @Get('download/:id')
-  @ApiOperation({ summary: 'Download app package' })
+  @ApiOperation({ summary: 'Download app package (regenerates fresh presigned URL each request)' })
   async downloadVersion(@Param('id') id: string, @Res() res: Response) {
     const version = await this.versionService.getVersion(id);
-    // Redirect to the download URL (presigned MinIO URL or external URL)
+    if (version.storageKey) {
+      // Generate a fresh 1-hour presigned URL per request — no expiry issue
+      const freshUrl = await this.fileStorage.getDownloadUrl(version.storageKey);
+      return res.redirect(302, freshUrl);
+    }
     return res.redirect(302, version.downloadUrl);
   }
 }

frontend/genex-mobile/lib/core/updater/version_checker.dart

@@ -28,7 +28,7 @@ class VersionChecker {
       debugPrint('[VersionChecker] 当前版本: ${currentInfo.version}, buildNumber: ${currentInfo.buildNumber}');
 
       final response = await _dio.get(
-        '/api/app/version/check',
+        '/api/v1/app/version/check',
         queryParameters: {
           'platform': 'android',
           'current_version': currentInfo.version,