Add CLI module files

vibeguard/__main__.py

@@ -0,0 +1,12 @@
+#!/usr/bin/env python3
+"""VibeGuard - AI Code Anti-Pattern Detector CLI entry point."""
+
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).parent.parent))
+
+from vibeguard.cli.main import main
+
+if __name__ == "__main__":
+    main(prog_name="vibeguard")