feat: テレメトリ機能を追加し、アプリの起動・終了時にイベントを送信するように変更

src-python/mainloop.py

@@ -460,14 +460,20 @@ class Main:
         """Read lines from stdin, parse JSON and enqueue requests.
 
         Uses blocking readline but honors stop via _stop_event checked between reads.
+        EOF on stdin indicates the frontend has closed; trigger app_closed event.
         """
         while not self._stop_event.is_set():
             try:
                 line = sys.stdin.readline()
                 if not line:
-                    # EOF reached; sleep briefly and re-check stop event
-                    time.sleep(0.1)
-                    continue
+                    # EOF reached - frontend has closed connection
+                    # Trigger telemetry shutdown to send app_closed event
+                    printLog("Frontend disconnected (stdin EOF)", {"event": "frontend_closed"})
+                    try:
+                        self.controller.shutdown()
+                    except Exception:
+                        errorLogging()
+                    break
                 received_data = json.loads(line.strip())
 
                 if received_data:
@@ -584,6 +590,12 @@ class Main:
         Args:
             wait: maximum seconds to wait for threads to join.
         """
+        # Controller 経由でシャットダウン（model.shutdown() → telemetry.shutdown() が呼ばれる）
+        try:
+            self.controller.shutdown()
+        except Exception:
+            errorLogging()
+        
         self._stop_event.set()
         # give threads a chance to exit
         start = time.time()