Feature(web): Add toolbar audio toggle button

server/2015Remote/WebService.h

@@ -55,6 +55,8 @@ struct WebDeviceInfo {
     int screen_width;
     int screen_height;
     bool online;
+    // 当前会话的音频开关。-1=未知（客户端 BITMAPINFO 还没回来），0=关，1=开
+    int audio_enabled = -1;
 
     // Keyframe cache for new web clients
     std::vector<uint8_t> keyframe_cache;
@@ -98,6 +100,10 @@ public:
     // Resolution change notification
     void NotifyResolutionChange(uint64_t device_id, int width, int height);
 
+    // Audio enable/disable notification — pushes current state to all web
+    // clients watching this device and caches it for newcomers.
+    void NotifyAudioState(uint64_t device_id, bool enabled);
+
     // Cursor change notification (called from ScreenSpyDlg)
     void BroadcastCursor(uint64_t device_id, uint8_t cursor_index);
 
@@ -129,6 +135,7 @@ private:
     void HandleMouse(void* ws_ptr, const std::string& msg);
     void HandleKey(void* ws_ptr, const std::string& msg);
     void HandleRdpReset(void* ws_ptr, const std::string& token);
+    void HandleAudioToggle(void* ws_ptr, const std::string& token);
 
     // Token management
     std::string GenerateToken(const std::string& username, const std::string& role);