fix: catch and log main crash

server.py

@@ -210,4 +210,9 @@ def query_notebook(notebook: str, query: str, limit: int = 5) -> str:
         return f"Query failed: {e}"
 
 if __name__ == "__main__":
-    mcp.run()
+    try:
+        logging.info("Starting knowledge-mcp server...")
+        mcp.run()
+    except Exception as e:
+        logging.critical(f"Server crashed: {e}", exc_info=True)
+        raise