checks_state discards a CANCELLED entry only when its context group holds
at least one non-cancelled sibling — before the sort, so the duplicate the
repo-global reconcile queue evicted (after it had already attached a check
to the head) cannot outvote the success that did its work (#136a17e497,
#1334002924). An all-cancelled context never reported at all and still
classifies FAILURE; {FAILURE older, CANCELLED newest} keeps its red.
The fixture that pinned the opposite rule imagined a cancelled run
replacing a success; it never saw one that replaced nothing. Rewritten
with its reason, plus the recorded a17e497 shape, the all-cancelled
groups, and the cancelled-over-FAILURE case.
Closes#139
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The flip's mechanical half (#117): the 26 entries under '## Unreleased'
move verbatim to changelog.d/<issue>.md, the heading is deleted, the
directory gains its marker README (#112 D1) and this PR's own fragment
(112.md), CHANGELOG.md's preamble describes fragments, and labeler.yml
maps changelog.d/** into scope:release-flow.
