Fix: Use shlex.split for command parsing

src/nacc_orchestrator/server.py

@@ -514,6 +514,7 @@ connect to 473293 at 192.168.1.50 and name it as vasanth-laptop
             # Execute any shell command - AI-powered with fallback
             if tool_name == "execute_command" or query_lower.startswith(("execute ", "run ", "exec ")):
                 import re
+                import shlex
                 # Extract command after keyword
                 match = re.search(r'(?:execute|run|exec)(?:\s+command)?\s+(.+)', payload.query, re.IGNORECASE)
                 if match:
@@ -526,7 +527,7 @@ connect to 473293 at 192.168.1.50 and name it as vasanth-laptop
                     exec_result = service.execute_command_on_node(
                         node_id=target_node,
                         description=f"Execute: {command_str}",
-                        command=command_str.split(),
+                        command=shlex.split(command_str),
                         timeout=payload.timeout
                     )