feat: 接入 FTP 全家桶（10 id）——连接/列表/下载/上传/重命名/删除/建目录/存在判断/断开

package.json

@@ -19,6 +19,7 @@
   "dependencies": {
     "@xyflow/react": "^12.12.0",
     "adm-zip": "^0.5.16",
+    "basic-ftp": "^6.2.3",
     "exceljs": "^4.4.0",
     "lucide-react": "^0.468.0",
     "nodemailer": "^6.9.16",