Module load 

Async load plumbing for the masonry grid.

load_with_fallback consults the shared ThumbnailCache, walking the quality::fallback_bucket chain on 404 so opt-in server features (e.g. fullsize generation) degrade gracefully to whatever the server has. collect_dims / propagate_dimensions keep the layout’s (w, h) view of each asset in sync with what eventually decodes.

Functions

collect_dims 🔒

load_with_fallback 🔒

Try requested bucket, then walk fallback_bucket chain on 404. Only the 404 path is retried — auth, network, etc. surface unchanged.

propagate_dimensions 🔒

Returns true if the AssetObject dimensions were filled in (relayout needed).