Whoever wrote a batch first decided its attribution: a native writer of a batch already imported was told AlreadyAdmitted and the record kept naming the source, and an import of a batch another source landed read the same. A9 now treats a stored receipt as a replay only when its imported_from equals the candidate's; otherwise the batch meets its own identities at A10 (IdentityCollision). A source naming this mind in another case is another mind, as the instance grammar already rules, and is pinned by a test.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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