Ported from heavy-duty/box#137 (heavy-duty/box#136) so the three repos'
reconcilers stay byte-identical. The state machine here was byte-identical to
box's before this change and remains so after -- only the scope:* taxonomy
differs, correctly.
decide_state() derived state from three inputs -- draft flag, requested
reviewers, submitted reviews -- and read NOTHING about mergeability or checks.
With the `if requested "$HUMAN"` short-circuit at the top of its precedence,
the label was sticky: once the maintainer was requested, a PR read
state:needs-human through conflicts, through red CI, through a force-push that
staled every approval.
In this repo the SECOND half is the live one: three PRs sit at
state:needs-human simultaneously with nothing saying which to merge first, and
they will conflict through CHANGELOG.md the moment one lands. The stickiness
has not bitten here yet only because nothing has conflicted -- the code carried
it identically, so the first merge would have reproduced box's situation.
The rule the label now keeps: state:needs-human means a human could merge this
RIGHT NOW, so anything making that false outranks the request that put it
there.
CONFLICTING or failing checks -> state:needs-rebase (new; the agent's to fix)
approvals staled by a push -> state:addressing (nobody reviewed this tree)
An UNFINISHED round still yields to an explicit human request -- MISSING
(nobody has reviewed yet) is a different fact from STALE (everyone reviewed
something else). UNKNOWN mergeability is NOT treated as unmergeable: GitHub
reports it for about a minute after every merge, and flapping every open PR
through needs-rebase on each merge would be worse than the bug. A failed read
degrades to the same "do not know" value.
Also adds merge-next -- the label this repo needs most today, since a correct
needs-human still does not say which of three ready PRs to merge first. Queue
order is intent, so the reconciler never sets it, only CLEARS it.
Fixtures 19 -> 29. DRY_RUN against this repo changes NOTHING, which is the
correct result: every open PR here is currently mergeable, so the new
precedence is a no-op on a healthy board and fires only when something is
actually wrong. npm test 623 passed.
Closes#127
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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