feat: harden local shell, SFTP, and desktop session reliability

Finder-launched terminals now inherit a login PATH so tools like ollama resolve, destructive SFTP/editor actions require confirmation, and terminal search plus window dragging work again. SSH forwards and RDP sessions keep listeners and survive reconnect without FastPath crashes.

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

src/i18n/locales/zh-CN/errors.json

@@ -39,7 +39,9 @@
     "closed": "连接已关闭",
     "dnsFailed": "无法解析主机",
     "refused": "连接被拒绝",
-    "disconnected": "连接已断开"
+    "disconnected": "连接已断开",
+    "keepaliveFailed": "SSH 心跳连续失败，连接已关闭",
+    "idleKicked": "远端 Shell 因空闲超时退出（TMOUT）"
   },
   "auth": {
     "failed": "认证失败，请检查用户名和密码",
@@ -68,7 +70,10 @@
   "forward": {
     "failed": "端口转发设置失败",
     "bindFailed": "端口绑定失败",
-    "alreadyInUse": "端口已被占用"
+    "alreadyInUse": "本地端口已被占用。请先暂停本规则或其它占用该端口的进程，再启动。",
+    "remoteDenied": "远端拒绝远程端口转发（AllowTcpForwarding / PermitListen、端口占用或绑定限制）。当前仅在远端 127.0.0.1 监听。",
+    "remoteDeniedPrivileged": "远端拒绝特权监听端口（<1024）。请改用 ≥1024，或以 root 监听，并检查 AllowTcpForwarding / PermitListen。",
+    "invalidTargetHost": "目标地址不能是 0.0.0.0，请填 127.0.0.1 或远端可达的内网 IP"
   },
   "sftp": {
     "connectFailed": "SFTP 连接失败",
@@ -80,7 +85,15 @@
     "writeFailed": "保存失败",
     "renameFailed": "重命名失败",
     "chmodFailed": "权限修改失败",
-    "apiUnavailable": "SFTP API 不可用"
+    "apiUnavailable": "SFTP API 不可用",
+    "channelFailed": "无法打开 SFTP 通道（服务器限制或会话繁忙），请重连后再试",
+    "sessionGone": "SFTP 会话已结束，请重新连接",
+    "busy": "正在传输文件，请稍后再试",
+    "editTooLarge": "文件过大，文本编辑上限约 2MB。请下载后用本地编辑器打开。",
+    "editBinary": "该文件像是二进制内容，无法用文本编辑器打开",
+    "editNotUtf8": "远程文件不是有效 UTF-8 文本",
+    "transferCancelled": "传输已取消",
+    "diskFull": "磁盘空间不足（本地或远程）"
   },
   "session": {
     "notFound": "会话不存在",