update unpack_dataset.py

scripts/unpack_dataset.py

@@ -26,6 +26,16 @@ def extract_archive(archive: Path, dest: Path, *, dry_run: bool) -> None:
     print(f"extracted {archive} -> {dest}")
 
 
+def delete_archives(archives: list[Path]) -> None:
+    """Delete archives after successful extraction to save space."""
+    for archive in archives:
+        try:
+            archive.unlink()
+            print(f"deleted {archive}")
+        except FileNotFoundError:
+            continue
+
+
 def remove_dot_underscore_files(root: Path) -> None:
     """Remove macOS resource fork files like ._foo."""
     for path in root.rglob("._*"):
@@ -70,6 +80,7 @@ def main() -> int:
         extract_archive(archive, archive.parent, dry_run=args.dry_run)
 
     if not args.dry_run:
+        delete_archives(archives)
         for target in targets:
             if target.is_dir():
                 remove_dot_underscore_files(target)