Variable HONUA_OFFLINE_REGION_STORE_CONFORMANCE_KINDConst Experimental

HONUA_OFFLINE_REGION_STORE_CONFORMANCE_KIND: "honua.offline-region-store-conformance" = ...

One conformance suite every offline region store must pass.

The IndexedDB adapter can only run in a browser and the in-memory adapter can run anywhere, so the suite is written as plain async functions rather than against a test framework: vitest runs it over the memory store, and the browser evidence runs the identical cases over real IndexedDB. A store that passes here is substitutable in the download coordinator and the read path.