One batch card scouts once, the seats pitch a field, and the board ranks it; the top k
(each wanted by two seats) become venture cards in the batch's milestone at 'picked'.
Children run the ordinary loop side by side, wait at 'ready' until every sibling is
settled or the hold runs out, then launch together. No child left behind: one batch
retry for a held child, then it is counted dead in the cohort retro, which closes the
card and the milestone. Fix rounds now yield the single worker run per tick to cards
still due their first build, so a failing page can't starve its siblings.
Claude-Session: https://claude.ai/code/session_01VDkN7ukK1kXkqov8FaZxva
Co-authored-by: Claude <noreply@anthropic.com>
