Function paste_entries_from_paths 

fn paste_entries_from_paths(
    pack: &Pack,
    paths: &[ContainerPath],
    pack_key: &str,
) -> Vec<PasteEntry>

Expands the selected paths of a pack into entries to paste, one per file.

• For a selected file a/b/c, the base path is a/b (parent folder), so pasting gives just c.
• For a selected folder a/b, the base path is a (parent of folder), so pasting preserves b/....