fix: graceful return on max retries instead of crashing thread

run_conversation raised the raw exception after exhausting retries,
which crashed the background thread in cli.py (unhandled exception
in Thread). Now returns a proper error result dict with failed=True
and persists the session, matching the pattern used by other error
paths (invalid responses, empty content, etc.).

Also wraps cli.py's run_agent thread function in try/except as a
safety net against any future unhandled exceptions from
run_conversation.

Made-with: Cursor

cli.py

@@ -5508,13 +5508,25 @@ class HermesCLI:
             def run_agent():
                 nonlocal result
                 agent_message = _voice_prefix + message if _voice_prefix else message
-                result = self.agent.run_conversation(
-                    user_message=agent_message,
-                    conversation_history=self.conversation_history[:-1],  # Exclude the message we just added
-                    stream_callback=stream_callback,
-                    task_id=self.session_id,
-                    persist_user_message=message if _voice_prefix else None,
-                )
+                try:
+                    result = self.agent.run_conversation(
+                        user_message=agent_message,
+                        conversation_history=self.conversation_history[:-1],  # Exclude the message we just added
+                        stream_callback=stream_callback,
+                        task_id=self.session_id,
+                        persist_user_message=message if _voice_prefix else None,
+                    )
+                except Exception as exc:
+                    logging.error("run_conversation raised: %s", exc, exc_info=True)
+                    _summary = getattr(self.agent, '_summarize_api_error', lambda e: str(e)[:300])(exc)
+                    result = {
+                        "final_response": f"Error: {_summary}",
+                        "messages": [],
+                        "api_calls": 0,
+                        "completed": False,
+                        "failed": True,
+                        "error": _summary,
+                    }
 
             # Start agent in background thread
             agent_thread = threading.Thread(target=run_agent)