Add Remote Desktop GUI tab with host and viewer sub-modes

Two sub-tabs share the new Remote Desktop window:

- Host: token field with a 'Generate' button that emits 24 random URL-safe
  bytes, a security warning about the bind address, and start / stop
  controls plus a refreshing status line that shows port and current
  viewer count.
- Viewer: address / port / token form, Connect / Disconnect, and a custom
  _FrameDisplay widget that paints incoming JPEG frames scaled with
  KeepAspectRatio. Mouse / wheel / key events on the display are remapped
  from widget coordinates back to the remote screen's pixel space using
  the latest frame's dimensions, then forwarded as INPUT messages.

Frame and error callbacks marshal cross-thread via Signals so the
receiver thread never touches Qt widgets directly. Translations added
for English, Traditional Chinese, Simplified Chinese, and Japanese.

Author: JE-Chen

je_auto_control/gui/language_wrapper/english.py

@@ -30,6 +30,7 @@
     "tab_ocr_reader": "OCR Reader",
     "tab_variables": "Variables",
     "tab_llm_planner": "LLM Planner",
+    "tab_remote_desktop": "Remote Desktop",
 
     # Auto Click Tab
     "interval_time": "Interval (ms):",
@@ -378,6 +379,36 @@
     "llm_running": "Running...",
     "llm_run_done": "Done",
 
+    # Remote Desktop Tab
+    "rd_host_tab": "Host (this machine)",
+    "rd_viewer_tab": "Viewer (control another)",
+    "rd_host_security_warning": (
+        "WARNING: anyone with the host:port and token gets full mouse / "
+        "keyboard control of this machine. Default bind is 127.0.0.1; "
+        "expose to a network only via SSH tunnel or trusted VPN."
+    ),
+    "rd_host_config_group": "Host configuration",
+    "rd_viewer_config_group": "Connect to a remote host",
+    "rd_token_label": "Token:",
+    "rd_token_placeholder": "shared secret (HMAC key)",
+    "rd_token_generate": "Generate",
+    "rd_bind_label": "Address:",
+    "rd_port_label": "Port:",
+    "rd_fps_label": "FPS:",
+    "rd_quality_label": "JPEG quality:",
+    "rd_host_start": "Start host",
+    "rd_host_stop": "Stop host",
+    "rd_host_status_running": "Running on port {port} — {n} viewer(s)",
+    "rd_host_status_stopped": "Host is stopped",
+    "rd_viewer_connect": "Connect",
+    "rd_viewer_disconnect": "Disconnect",
+    "rd_viewer_required_fields": (
+        "Address, port, and token are all required."
+    ),
+    "rd_viewer_status_connected": "Connected — receiving frames",
+    "rd_viewer_status_idle": "Not connected",
+    "rd_viewer_error": "Remote desktop error",
+
     # Menu bar
     "menu_file": "File",
     "menu_file_open_script": "Open Script...",

je_auto_control/gui/language_wrapper/japanese.py

@@ -30,6 +30,7 @@
     "tab_ocr_reader": "OCR リーダー",
     "tab_variables": "実行時変数",
     "tab_llm_planner": "LLM プランナー",
+    "tab_remote_desktop": "リモートデスクトップ",
 
     # Auto Click Tab
     "interval_time": "間隔 (ms):",
@@ -378,6 +379,34 @@
     "llm_running": "実行中...",
     "llm_run_done": "完了",
 
+    # Remote Desktop Tab
+    "rd_host_tab": "ホスト（このマシン）",
+    "rd_viewer_tab": "ビューア（他マシンを操作）",
+    "rd_host_security_warning": (
+        "警告：host:port と token を知る相手は、このマシンのマウス／キーボードを"
+        "完全に操作できます。既定は 127.0.0.1。外部公開は SSH トンネルか"
+        "信頼できる VPN 経由で行ってください。"
+    ),
+    "rd_host_config_group": "ホスト設定",
+    "rd_viewer_config_group": "リモートホストへ接続",
+    "rd_token_label": "トークン:",
+    "rd_token_placeholder": "共有シークレット（HMAC キー）",
+    "rd_token_generate": "生成",
+    "rd_bind_label": "アドレス:",
+    "rd_port_label": "ポート:",
+    "rd_fps_label": "FPS:",
+    "rd_quality_label": "JPEG 品質:",
+    "rd_host_start": "ホスト開始",
+    "rd_host_stop": "ホスト停止",
+    "rd_host_status_running": "稼働中 ポート {port} — ビューア {n} 名",
+    "rd_host_status_stopped": "ホストは停止中",
+    "rd_viewer_connect": "接続",
+    "rd_viewer_disconnect": "切断",
+    "rd_viewer_required_fields": "アドレス・ポート・トークンはすべて必須です。",
+    "rd_viewer_status_connected": "接続中 — フレーム受信中",
+    "rd_viewer_status_idle": "未接続",
+    "rd_viewer_error": "リモートデスクトップエラー",
+
     # Menu bar
     "menu_file": "ファイル",
     "menu_file_open_script": "スクリプトを開く...",

je_auto_control/gui/language_wrapper/simplified_chinese.py

@@ -25,6 +25,7 @@
     "tab_ocr_reader": "OCR 读取",
     "tab_variables": "运行期变量",
     "tab_llm_planner": "LLM 脚本规划",
+    "tab_remote_desktop": "远程桌面",
 
     # Auto Click Tab
     "interval_time": "间隔时间 (ms):",
@@ -373,6 +374,33 @@
     "llm_running": "执行中...",
     "llm_run_done": "完成",
 
+    # Remote Desktop Tab
+    "rd_host_tab": "被远程（本机）",
+    "rd_viewer_tab": "远程他人（控制他机）",
+    "rd_host_security_warning": (
+        "警告：取得本机 host:port 与 token 的人，可以完全控制本机的鼠标／键盘。"
+        "默认仅绑 127.0.0.1；要对外请透过 SSH tunnel 或可信的 VPN。"
+    ),
+    "rd_host_config_group": "Host 设置",
+    "rd_viewer_config_group": "连接到远程 Host",
+    "rd_token_label": "Token:",
+    "rd_token_placeholder": "共享密钥（HMAC key）",
+    "rd_token_generate": "生成",
+    "rd_bind_label": "地址:",
+    "rd_port_label": "端口:",
+    "rd_fps_label": "FPS:",
+    "rd_quality_label": "JPEG 质量:",
+    "rd_host_start": "启动 Host",
+    "rd_host_stop": "停止 Host",
+    "rd_host_status_running": "运行中 端口 {port} — {n} 个 viewer",
+    "rd_host_status_stopped": "Host 已停止",
+    "rd_viewer_connect": "连接",
+    "rd_viewer_disconnect": "断开",
+    "rd_viewer_required_fields": "地址、端口、token 都必须填写。",
+    "rd_viewer_status_connected": "已连接 — 正在接收画面",
+    "rd_viewer_status_idle": "未连接",
+    "rd_viewer_error": "远程桌面错误",
+
     # Menu bar
     "menu_file": "文件",
     "menu_file_open_script": "打开脚本...",

je_auto_control/gui/language_wrapper/traditional_chinese.py

@@ -26,6 +26,7 @@
     "tab_ocr_reader": "OCR 讀取",
     "tab_variables": "執行期變數",
     "tab_llm_planner": "LLM 腳本規劃",
+    "tab_remote_desktop": "遠端桌面",
 
     # Auto Click Tab
     "interval_time": "間隔時間 (ms)：",
@@ -374,6 +375,33 @@
     "llm_running": "執行中...",
     "llm_run_done": "完成",
 
+    # Remote Desktop Tab
+    "rd_host_tab": "被遠端（本機）",
+    "rd_viewer_tab": "遠端他人（控制他機）",
+    "rd_host_security_warning": (
+        "警告：取得本機 host:port 與 token 的人，可以完全控制本機的滑鼠／鍵盤。"
+        "預設只綁 127.0.0.1；要對外請透過 SSH tunnel 或可信的 VPN。"
+    ),
+    "rd_host_config_group": "Host 設定",
+    "rd_viewer_config_group": "連線到遠端 Host",
+    "rd_token_label": "Token：",
+    "rd_token_placeholder": "共用密鑰（HMAC key）",
+    "rd_token_generate": "產生",
+    "rd_bind_label": "位址：",
+    "rd_port_label": "Port：",
+    "rd_fps_label": "FPS：",
+    "rd_quality_label": "JPEG 品質：",
+    "rd_host_start": "啟動 Host",
+    "rd_host_stop": "停止 Host",
+    "rd_host_status_running": "運行中 port {port} — {n} 個 viewer",
+    "rd_host_status_stopped": "Host 已停止",
+    "rd_viewer_connect": "連線",
+    "rd_viewer_disconnect": "中斷連線",
+    "rd_viewer_required_fields": "位址、port、token 都必須填寫。",
+    "rd_viewer_status_connected": "已連線 — 正在接收畫面",
+    "rd_viewer_status_idle": "尚未連線",
+    "rd_viewer_error": "遠端桌面錯誤",
+
     # Menu bar
     "menu_file": "檔案",
     "menu_file_open_script": "開啟腳本...",

je_auto_control/gui/main_widget.py

@@ -20,6 +20,7 @@
 from je_auto_control.gui.ocr_tab import OCRReaderTab
 from je_auto_control.gui.plugins_tab import PluginsTab
 from je_auto_control.gui.recording_editor_tab import RecordingEditorTab
+from je_auto_control.gui.remote_desktop_tab import RemoteDesktopTab
 from je_auto_control.gui.run_history_tab import RunHistoryTab
 from je_auto_control.gui.scheduler_tab import SchedulerTab
 from je_auto_control.gui.script_builder import ScriptBuilderTab
@@ -96,6 +97,7 @@ def __init__(self, parent=None):
         self._add_tab("ocr_reader", "tab_ocr_reader", OCRReaderTab())
         self._add_tab("variables", "tab_variables", VariablesTab())
         self._add_tab("llm_planner", "tab_llm_planner", LLMPlannerTab())
+        self._add_tab("remote_desktop", "tab_remote_desktop", RemoteDesktopTab())
         self._add_tab("plugins", "tab_plugins", PluginsTab())
         layout.addWidget(self.tabs)