fix: handle gateway Ctrl+C shutdown cleanly

hermes_cli/gateway.py

@@ -2368,7 +2368,11 @@ def run_gateway(verbose: int = 0, quiet: bool = False, replace: bool = False):
     # Exit with code 1 if gateway fails to connect any platform,
     # so systemd Restart=on-failure will retry on transient errors
     verbosity = None if quiet else verbose
-    success = asyncio.run(start_gateway(replace=replace, verbosity=verbosity))
+    try:
+        success = asyncio.run(start_gateway(replace=replace, verbosity=verbosity))
+    except KeyboardInterrupt:
+        print("\nGateway stopped.")
+        return
     if not success:
         sys.exit(1)