.cc is MessagePack-based, so the core no longer pretends to be
serializer-independent. GameCult.Caching references
MessagePack.Annotations 3.1.7 and reads KeyAttribute and
IgnoreMemberAttribute by type instead of matching their names. The
benchmark's own MessagePack.Annotations reference is dropped; it arrives
through GameCult.Caching.
A generic document's options come from its generic definition's
assembly: Doc<X> uses Doc's declared resolvers, never X's.
GenericDocumentUsesItsOwnAssemblyResolvers compiles GenericHolder<T>
into an assembly whose resolver writes Pair as [B, A] and checks the
payload uses it rather than Pair's own assembly resolver.
Contracts: schema-compatibility states the slot rule and its
rejections; store-composition states the generic resolver rule.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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