feat(scan): add initial SAST pipeline

tests/test_run.py

@@ -0,0 +1,13 @@
+from pathlib import Path
+
+from openultrasast.config import load_config
+from openultrasast.run import create_scan_run
+
+
+def test_create_scan_run_writes_directories_and_config(tmp_path: Path) -> None:
+    run = create_scan_run(tmp_path, load_config(None))
+
+    assert run.root.exists()
+    assert (run.root / "preprocess").is_dir()
+    assert (run.root / "resolved_config.json").is_file()
+    assert run.root.parent.name == "runs"