An ask's asker is the last token of its accept subject; the holder checks the kind against the callers the build seat's
definition lists (Puller.Callers, CallersFromDefinitions), refuses an ask of another kind answering error naming the kind
and the asker and ending it failed, takes only a build and a run on main's subject, and gives back an ask the seat list
does not judge yet. A second worker per queue (AskNamedWorker, filtered to accept.<queue>.*) is pulled after main's; the
holder says `named worker not bound` while its membership lists none.
Builds: design 47 G §543, §544, §481, A-163, A-170
Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h