Key identity serialized a key with the options of the key type's own
assembly, but the store writes it inside the document with the document
assembly's options, [CultCacheFormatterResolver] resolvers included. A key
that failed to serialize fell back to comparison by ToString.
The inspector codec now takes the owning document type, ReplaceKey and
FreshKey take it, and a key serializes as its declared key type under that
document's options, the store's own path. A key the document cannot
serialize is refused with a notice; the text fallback is deleted.
The comment and README said "the dictionary's own comparer"; it is the
rebuilt dictionary type's default comparer, and now says so.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>