Reuse SSH for WebCRT SFTP and fix folder navigation UX.

Open SFTP on the live session transport after SSH connect, pass the target path on every list refresh, and use folder/file icons in the browser panel.

Co-authored-by: Cursor <cursoragent@cursor.com>

web/src/i18n/en.ts

@@ -1046,6 +1046,9 @@ const en = {
       upload: "Upload",
       uploaded: "Upload complete",
       dir: "dir",
+      loading: "Loading…",
+      enterHint: "Double-click to open folder",
+      downloadHint: "Click to download",
     },
     term: {
       findPh: "Find…",
@@ -1073,6 +1076,7 @@ const en = {
       sftpHop: "SFTP does not support hop devices yet (direct SSH only)",
       sftpSsh: "SFTP requires SSH",
       sftpNeedPassword: "SFTP needs a saved SSH password (one-shot dialog passwords are not reused for files)",
+      sftpUnsupported: "This SSH session has no SFTP channel (device may not offer it)",
       queueDropped: "Terminal output too fast; about {{count}} chunk(s) dropped — transcript may be incomplete",
       websocket: "WebSocket connection failed",
     },

web/src/i18n/zh.ts

@@ -1043,6 +1043,9 @@ const zh = {
       upload: "上传",
       uploaded: "上传成功",
       dir: "目录",
+      loading: "正在加载…",
+      enterHint: "双击进入目录",
+      downloadHint: "单击下载文件",
     },
     term: {
       findPh: "查找…",
@@ -1070,6 +1073,7 @@ const zh = {
       sftpHop: "SFTP 暂不支持跳板设备，请使用直连 SSH",
       sftpSsh: "SFTP 仅支持 SSH 协议",
       sftpNeedPassword: "SFTP 需要已保存的 SSH 密码（会话弹窗密码不会用于文件传输）",
+      sftpUnsupported: "当前 SSH 会话未提供 SFTP（设备可能未开启）",
       queueDropped: "终端输出过快，已丢弃约 {{count}} 段，内容可能不完整",
       websocket: "WebSocket 连接失败",
     },