github asked one question in four places by writing task/<stem> out
each time. It asks branch_of() now, which answers phase/<stem> for a
phase card — so from review/ onwards a phase is an ordinary card: its
PR opens, its worktree is driven, and merge & clean up finds the
branch it is meant to take apart.
A phase member's PR is opened against its phase's branch rather than
main. Its branch was cut from there, so that is the only base whose
diff is the member's own work — and a PR into main carrying a whole
phase would invite exactly the merge this design refuses to make. The
base is published first, so the remote has something to open against;
the main-is-ahead guard still stands in front of every PR into main.
A phase's own PR says what is in it: the member list, in run order.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
