Conn.CallChunks subscribes to the call's chunks before it asks the verb, hands the verb's answer to an accept hook, then
receives the chunks the answer counts, in order, acknowledging each, into a writer; CallFile answers the whole body as
the member file, the form a bundle's seat call answers. The checker, the indexer, the assigner and the recovery keeper
read a step's answer kept as an object through it.
Builds: design 47 G A-291, A-290, A-254
Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h