Added executable root launcher for audita

tests/test_launcher.py

@@ -0,0 +1,31 @@
+import os
+import shutil
+import subprocess
+from pathlib import Path
+
+import pytest
+
+
+ROOT = Path(__file__).resolve().parents[1]
+LAUNCHER = ROOT / "audita"
+
+
+def test_root_launcher_exists_and_is_executable():
+    assert LAUNCHER.is_file()
+    assert os.access(LAUNCHER, os.X_OK)
+
+
+def test_root_launcher_help_smoke():
+    if shutil.which("uv") is None:
+        pytest.skip("uv is not installed")
+
+    result = subprocess.run(
+        [str(LAUNCHER), "--help"],
+        cwd=ROOT,
+        text=True,
+        capture_output=True,
+        check=False,
+    )
+
+    assert result.returncode == 0
+    assert result.stdout.startswith("usage: audita ")