fix: discover_node_state.py global variable scope, add generated node state files

scripts/discover_node_state.py

@@ -213,6 +213,8 @@ def discover_node(node_id: str, output_dir: Path) -> None:
 
 
 def main():
+    global CITY_API_URL
+    
     parser = argparse.ArgumentParser(description="Discover DAARION node state")
     parser.add_argument("--node", type=str, help="Specific node ID to discover")
     parser.add_argument("--all", action="store_true", help="Discover all known nodes")
@@ -226,7 +228,6 @@ def main():
         parser.print_help()
         sys.exit(1)
     
-    global CITY_API_URL
     CITY_API_URL = args.api_url
     output_dir = Path(args.output)