Type Alias SharedFileIndex 

pub type SharedFileIndex = Arc<ArcSwap<Option<FileIndex>>>;

Lock-free shared index. None while the initial walk is still in progress.

Use index.load() for reads (returns a Guard — no lock taken). Use index.store(Arc::new(Some(new_idx))) for writes (atomic swap).

Aliased Type

pub struct SharedFileIndex { /* private fields */ }