On ace, a node-engine left on its bootstrapped seat list could not find the
artifact store's seat, refused avahi's archive reference and with it the whole
pass, so the seat-list hold never ran and every module said "reaches no
artifact store". While the list is unread, a placed module whose seats are not
all bootstrapped is now held as it runs before anything of its build is read
(frombus.Scope.Held), its reason names the bootstrapped seats the node holds,
and a pass refused whole says the unread list first (issue 1966).
Claude-Session: https://claude.ai/code/session_01JG73KEq4zoDfM9WtYpcQgZ