more matrix debugging

matrix_bot.py

@@ -80,11 +80,13 @@ class MatrixBot:
         # Initial sync with no timeout to consume backlog before registering callbacks,
         # so we don't replay old messages on startup.
         try:
-            resp = await self.client.sync(timeout=0, full_state=True)
+            resp = await self.client.sync(timeout=0)
             if isinstance(resp, SyncError):
-                print(f"  ! [Matrix] Initial sync warning (non-fatal): {resp.message}")
+                print(f"  ! [Matrix] Initial sync error: {resp.message}")
+            else:
+                print(f">> [Matrix] Initial sync OK, next_batch={self.client.next_batch!r}")
         except Exception as e:
-            print(f"  ! [Matrix] Initial sync exception (non-fatal, continuing): {e}")
+            print(f"  ! [Matrix] Initial sync exception: {e}")
 
         # Join all configured rooms. The bot account must be a member of a room
         # to receive its events in the sync stream — having the room ID in config
@@ -98,7 +100,11 @@ class MatrixBot:
 
         self.client.add_event_callback(self._on_message, RoomMessageText)
         print(">> [Matrix] Listening for commands")
-        await self.client.sync_forever(timeout=30000)
+        # Use a short poll timeout (5 s) to stay well under any reverse-proxy
+        # idle timeout. A 30 s long-poll through nginx/caddy will often get a
+        # 504 which matrix-nio can't parse, causing the "next_batch required"
+        # loop and silencing all callbacks. 5 s is safe for all common setups.
+        await self.client.sync_forever(timeout=5000)
 
     # -------------------------------------------------------------------------
     # Event handler