Module path 

Path-completion source (CSM.7).

Fires when InsertContext::path_context is true – the host sets the flag when the cursor sits inside a tree-sitter string scope. The source walks the directory referenced by the partial path the user typed, emits one candidate per filesystem entry (capped, ignored-name set filtered).

No internal cache in v1 – the cache that lived host-side (App.path_completion_cache) retired with this slice. Each popup-open / refilter pays one read_dir + per-entry file_type(); profile and reintroduce a source-internal Mutex<Option<...>> if the keystroke budget regresses.

Mode adapter (PathCompletionMode) lives in lattice-mode::modes::completion due to the lattice-mode <- lattice-completion dep direction; the adapter just wraps an Arc<PathCompletionSource>.

Structs

PathCompletionSource

The SyncCompletionSource impl for path completion. Stateless beyond its newtype identity; the host threads path_context + buffer_dir through InsertContext.