feat: support camera capture to livekit

main/application.h

@@ -11,6 +11,7 @@
 #include <deque>
 #include <memory>
 #include <functional>
+#include <atomic>
 
 #include "protocol.h"
 #include "ota.h"
@@ -91,6 +92,7 @@ public:
      * Sends MAIN_EVENT_TOGGLE_CHAT to be handled in Run()
      */
     void ToggleChatState();
+    void ToggleChatStateWithVision();
 
     /**
      * Start listening (event-based, thread-safe)
@@ -144,6 +146,7 @@ private:
     bool aborted_ = false;
     bool assets_version_checked_ = false;
     bool play_popup_on_listening_ = false;  // Flag to play popup sound after state changes to listening
+    std::atomic<bool> vision_text_mode_enabled_ = false;
     int clock_ticks_ = 0;
     TaskHandle_t activation_task_handle_ = nullptr;
 
@@ -159,6 +162,7 @@ private:
     void HandleWakeWordDetectedEvent();
     void ContinueOpenAudioChannel(ListeningMode mode);
     void ContinueWakeWordInvoke(const std::string& wake_word);
+    void SendCurrentVisionFrame();
 
     // Activation task (runs in background)
     void ActivationTask();