Improve WebCRT SFTP transfers and file-panel UX.

Stream large uploads/downloads with progress, raise the size cap, and support drag-drop folders plus fixed/resizable columns.

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

web/src/i18n/en.ts

@@ -1045,6 +1045,11 @@ const en = {
       up: "Up",
       upload: "Upload",
       uploaded: "Upload complete",
+      uploading: "Upload {{done}}/{{total}} · {{name}} {{pct}}",
+      downloading: "Download {{name}} {{pct}}",
+      uploadPartial: "Uploaded {{ok}}, failed {{failed}}",
+      dropHint: "Drop to upload into current folder",
+      dropEmpty: "No uploadable files found",
       dir: "dir",
       loading: "Loading…",
       enterHint: "Double-click to open folder",
@@ -1056,6 +1061,7 @@ const en = {
       colGroup: "Group",
       colMode: "Access",
       resizeHint: "Drag to resize SFTP / terminal",
+      colResizeHint: "Drag to resize column",
     },
     term: {
       findPh: "Find…",
@@ -1084,6 +1090,7 @@ const en = {
       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)",
+      sftpTooLarge: "File exceeds size limit (default 512MB)",
       queueDropped: "Terminal output too fast; about {{count}} chunk(s) dropped — transcript may be incomplete",
       websocket: "WebSocket connection failed",
     },

web/src/i18n/zh.ts

@@ -1042,6 +1042,11 @@ const zh = {
       up: "上级",
       upload: "上传",
       uploaded: "上传成功",
+      uploading: "上传 {{done}}/{{total}} · {{name}} {{pct}}",
+      downloading: "下载 {{name}} {{pct}}",
+      uploadPartial: "上传完成 {{ok}} 个，失败 {{failed}} 个",
+      dropHint: "松开以上传到当前目录",
+      dropEmpty: "未识别到可上传的文件",
       dir: "目录",
       loading: "正在加载…",
       enterHint: "双击进入目录",
@@ -1053,6 +1058,7 @@ const zh = {
       colGroup: "组",
       colMode: "权限",
       resizeHint: "拖动调整 SFTP / 终端宽度",
+      colResizeHint: "拖动调整列宽",
     },
     term: {
       findPh: "查找…",
@@ -1081,6 +1087,7 @@ const zh = {
       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）",
+      sftpTooLarge: "文件超过大小限制（默认 512MB）",
       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",
     },