While no entry of the revision invokes a queue of a build seat (seat:<seat>.accept.<queue>,
read by catalogue.QueueInvoke), the part composes no named worker, and at the first such
pass it purges accept.<queue>.* of each build seat's stream and deletes the named workers,
saying each in its journal; a failed read of the catalog half purges nothing. Its account
alone is granted the stream's purge and the named workers' delete. The hand tool
grants_named_purge records its hand act first, then asks the process to do it.
Builds: design 47 G §544, §600, §601, A-231
Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h
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