feat: align with upstream 1.5.9.9

server/api/open/backup/auto.post.ts

@@ -0,0 +1,27 @@
+import { defineEventHandler } from 'h3'
+import { prepareBackup, executeUploads, acquireBackupLock, releaseBackupLock } from '~~/server/services/autoBackupService'
+import { createApiError } from '~~/server/utils/apiError'
+import { SERVER_ERROR_CODES } from '~~/server/config/constants'
+
+export default defineEventHandler(async () => {
+  acquireBackupLock()
+  try {
+    const prepared = await prepareBackup()
+    // 必须等待上传完成再返回响应：
+    // Vercel Serverless 在响应返回后会冻结/回收函数实例，
+    // 若以 fire-and-forget 后台执行，上传会被中途掐断（socket closed）。
+    const result = await executeUploads(prepared)
+
+    return {
+      success: result.success,
+      message: result.success ? '备份完成' : '备份部分或全部失败',
+      backupId: prepared.historyId,
+      results: result.results
+    }
+  } catch (error: any) {
+    if (error.statusCode) throw error
+    throw createApiError(500, SERVER_ERROR_CODES.BACKUP_FAILED, error.message || '备份执行失败')
+  } finally {
+    releaseBackupLock()
+  }
+})