Operator decisions: MessagePack's integer [Key] is the only slot authority and
the cache core references MessagePack.Annotations directly, since .cc is
canonically MessagePack; a generic document's resolvers come from its own
assembly. Also records the generator and registry disagreements Soul found with
old-versus-new consumer probes and the shape of the fixes.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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