修复备份恢复演练校验

apps/backend/src/db-backup.ts

@@ -417,23 +417,10 @@ async function downloadToStdout(storage: ObjectStorage, args: BackupCliArgs): Pr
   const tempPath = path.join('/tmp', `order-site-backup-${process.pid}-${Date.now()}.dump`)
   let size = 0
   try {
-    const output = fs.createWriteStream(tempPath, { mode: 0o600 })
-    for await (const chunk of stored.reader) {
-      const buffer = Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk)
-      hash.update(buffer)
-      size += buffer.length
-      if (!output.write(buffer)) {
-        await new Promise<void>((resolve, reject) => {
-          output.once('drain', resolve)
-          output.once('error', reject)
-        })
-      }
-    }
-    await new Promise<void>((resolve, reject) => {
-      output.once('close', resolve)
-      output.once('error', reject)
-      output.end()
+    const hashingStream = new HashingStream(hash, (chunkSize) => {
+      size += chunkSize
     })
+    await pipeline(stored.reader, hashingStream, fs.createWriteStream(tempPath, { mode: 0o600 }))
 
     const sha256 = hash.digest('hex')
     const manifest = await readManifest(storage, args.key)