feat: add standalone CLI project

run.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python3
+
+import sys
+from pathlib import Path
+
+PROJECT_ROOT = Path(__file__).resolve().parent
+if str(PROJECT_ROOT) not in sys.path:
+    sys.path.insert(0, str(PROJECT_ROOT))
+
+from main import main
+
+
+def _default_args(argv: list[str]) -> list[str]:
+    if argv:
+        return argv
+    return ["--help"]
+
+
+if __name__ == "__main__":
+    raise SystemExit(main(_default_args(sys.argv[1:])))