A whole try has no pull request, yet compose-candidate and the manifest validator read the indexer's
candidate of a group. The indexer reads the checker's tries, writes candidates.<try id> (number 0 per member) from the
previews, judges its manifests with the seat definitions the members carry, leaves try-* alone in the open message,
deletes it when the try ends, and has a tool that reads and one that drops it.
Claude-Session: https://claude.ai/code/session_01NcbgfFSnn24M3GcqttoU7i
jschoubben
b97e277d2d