Version 1.2.2. Added usage overview. Shows token used and cost in $.

server/inbox/listener.py

@@ -85,6 +85,14 @@ class EmailAccountListener:
     # ── Main loop ─────────────────────────────────────────────────────────────
 
     async def _run_loop(self) -> None:
+        """
+        Outer retry loop. Restarts the inner trigger/handling loop on any error
+        with exponential backoff (5s → 10s → 20s → ... → 60s max).
+
+        CancelledError is propagated cleanly (listener.stop() cancels the task).
+        Any other exception is logged and retried — typical causes: IMAP disconnect,
+        network timeout, credential rotation. Backoff resets on successful cycle.
+        """
         backoff = 5
         while True:
             try: