ADR 0593 §7, §9: the checker asks compose-candidate of each placed node in parallel within its own setting
compose-answer-bound (60 s); a refusal fails the check naming node and module, a silent, unready or
unreachable node passes with "not composed on that node: no answer". A group with a node-engine member is
composed by the composer at that head on the Go build seat over each node's input. The wait on the
assigner's compositions goes, and the checker invokes the one engine verb it needs.
Claude-Session: https://claude.ai/code/session_01NcbgfJ9Gum47zkFKWRaovL
Review of 650a1d0: a member that only failed its tests got no preview, so the indexer held no manifest
of it, the assigner's composition only said it waits, and the check waited for ever. The preview is now
written whenever every build module's fetch merged; a member with no preview of a merge (a conflict, a
fetch that did not answer) makes the composition not run, said with the members it names, unawaited.
Claude-Session: https://claude.ai/code/session_01NcbgfJ9Gum47zkFKWRaovL
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