[fix] show truthful signaling recovery state and pin safe retries

apps/desktop/src/gui/application/gui_application.h

@@ -14,6 +14,7 @@
 
 #include <remote_action.h>
 
+#include "application/signal_connection_indicator.h"
 #include "runtime/cursor_state_provider.h"
 #include "runtime/gui_runtime.h"
 
@@ -106,11 +107,7 @@ private:
       cursor_delivery_states_;
   uint32_t cursor_state_sequence_ = 0;
   std::chrono::steady_clock::time_point next_video_frame_time_{};
-  // The signal server is reached over a lossy path that routinely drops for the
-  // few seconds a reconnect takes, so the main window holds its "connected"
-  // indication through a brief blip instead of flickering offline.
-  std::chrono::steady_clock::time_point signal_lost_at_{};
-  bool signal_lost_at_valid_ = false;
+  SignalConnectionIndicator signal_connection_indicator_;
 #if defined(__linux__) && !defined(__APPLE__)
   bool use_xwayland_gui_ = false;
   bool use_x11_custom_titlebar_ = false;