add ablation study

normalize names and artifact paths

validation/raptor_validation/artifacts.py

@@ -0,0 +1,33 @@
+from pathlib import Path
+
+
+ARTIFACTS_DIRNAME = "artifacts"
+
+
+def artifacts_dir(workspace_dir: str | Path) -> Path:
+    return Path(workspace_dir) / ARTIFACTS_DIRNAME
+
+
+def runner_uses_library(runner_path: str | Path, library_path: str | Path) -> bool:
+    runner_path = Path(runner_path)
+    library_path = Path(library_path)
+    try:
+        return (
+            runner_path.is_file()
+            and library_path.is_file()
+            and str(library_path.resolve()).encode() in runner_path.read_bytes()
+        )
+    except OSError:
+        return False
+
+
+def remove_lock_files(root: str | Path) -> int:
+    root = Path(root)
+    if not root.exists():
+        return 0
+    removed = 0
+    for path in root.rglob("*.lock"):
+        if path.is_file() or path.is_symlink():
+            path.unlink(missing_ok=True)
+            removed += 1
+    return removed