assets.fetchInUse

Fetch the unique set of asset references in use on the targeted entities — materials, meshes, textures, bundles, and every other category a component field can hold. It scans each entity's components, walking their public data recursively for asset references, dedupes by identity, and reports each reference enriched with its identity and on-disk path plus the entities that use it. Target one entity, a list of entities, or the whole scene; roots are scanned through their children. The one-call inventory of what a piece of content is made of.