Asset system

Package: @jarvig/assets.

Runtime code uses typed handles, not editor paths. States: unresolved, loading, resident, evicted, failed. Legal transitions are tested. Skipping a state throws.

The streaming manager, when it exists, owns memory budgets. The handle does not know about files. A server may hold an unresolved handle for world data it has not loaded. The Phase 0 dedicated server does that for world:default and does not load graphics.

Dependency graphs must be inspectable in the editor and the CLI once import exists (JRV-0022). They are not inspectable yet.

Supported source kinds named by the founding doc. JRV-0022 imports GLB/glTF static meshes only. Images, audio, and the other kinds still have no importer:

glTF / GLB, KTX2 / Basis, PNG / JPEG / HDR / EXR, MaterialX (planned), WAV / OGG, PLY / splats (experimental).

See import-pipeline.md, cooking.md, derived-data-cache.md, content-addressing.md.