don't bail on reconnect

llm.py

@@ -62,11 +62,13 @@ class LLM:
             user_msg_parts = last_msg["content"]
         else:
             user_msg_parts = []
-        if message["text"]:
-            user_msg_parts.append({"text": message["text"]})
-        if message["files"]:
-            for file in message["files"]:
-                user_msg_parts.extend(self._process_file(file))
+        
+        if message:
+            if message["text"]:
+                user_msg_parts.append({"text": message["text"]})
+            if message["files"]:
+                for file in message["files"]:
+                    user_msg_parts.extend(self._process_file(file))
         
         if user_msg_parts:
             messages.append({"role": "user", "content": user_msg_parts})