Refactor all item query methods to avoid untranslatable DistinctBy
in IQueryable expressions. Replace ApplyGroupingFilter with a
two-phase pattern: load IDs and grouping keys to memory, apply
grouping and paging in-memory, then reload full entities by ID.
Add ApplyGroupingInMemory<T> and ApplyPagingToIds helpers.
Use AsEnumerable() before DistinctBy in GetItemValues to force
client-side evaluation. Resolves InvalidOperationException on
/Items, /Items/Filters, /Users/{id}/Items/Latest, and /Studios
endpoints across all supported databases. See
EF_CORE_QUERY_TRANSLATION_FIX.md for details.
wjones
8b0503f398