style: apply ruff auto-fixes

cmdnat/zerotier.py

@@ -1,15 +1,14 @@
-import os
 import sys
 import requests
 from pathlib import Path
-from typing import Any, Dict, List, Optional, Sequence
+from typing import Any, Dict, Sequence
 
 # Add project root to sys.path
 root = Path(__file__).resolve().parent.parent
 if str(root) not in sys.path:
     sys.path.insert(0, str(root))
 
-from cmdlet._shared import Cmdlet, CmdletArg
+from cmdlet._shared import Cmdlet
 from SYS.config import load_config
 from SYS.result_table import Table
 from API import zerotier as zt