Registration refuses a type any of whose ids (its own, or one it declares
compatible) another registered type already owns or declares, with
CultSchemaConflictException naming the id, both schema names and both CLR types.
TypeScript already refuses this (cult-cache.ts); before, C# kept whichever type
registered first (Soul F4). An exact wire alias must now also declare the same
compatible ids: a type differing only in its declaration had it dropped when it
registered second (H4), and is refused the same way.
Exact aliases that agree in every respect still register by type, and a record
under their shared id still resolves to the first registered (H3). Removing that
would delete CultMesh's same-schema aliases; it is left for an operator ruling.
Tests: both registration orders for a shared compatible id, an owned id declared
by another type, and a same-schema type with a different declaration; an alias
with the same declaration still registers. The registry tests use the shared
EmittedDocumentTypes helper in place of their own.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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