Across ~12 supervised MiniMax units, more than half reported a green suite
where a manual re-run found red (see memory/gotchas-minimax.md). Add
--gate "<command>" (with --gate-timeout, default 900s): after the detached
sub-session exits, mm-worktree-task itself re-runs the command in the
worktree against the sub-session's LAST commit, in its own reapable process
group (setsid + group kill, so a hung gate and everything it forked are
bounded and cleaned up), and appends an unambiguous PASSED/FAILED verdict —
plus an explicit MISMATCH callout when the agent's own report claimed
success — to the result file. A missing command, non-zero exit, timeout, or
dirty worktree are all failures, never a silent skip. mm-worktree-task's own
exit code is unchanged: the launch already returns before the sub-session
(and gate) run, detached.
Claude-Session: https://claude.ai/code/session_014KNyfHmHpMbdMrHZXDRkAp
3734978d56