awk runs END on the way out of an exit from a main rule, so the length
row printed mid-file was followed by the citation row it outranks — the
internal protocol line landing inside the human-facing excerpt. Found by
claude-bot and kimi-bot in #262's first round, independently and with the
same reproduction.
The guard is the reported flag the empty-heading walk in this same
predicate already uses. The fixtures are the axis 57.md could not reach:
its over-bound entry is last, so only END's flush can print. 58.md puts
one before another bullet, 59.md before a heading and after a misplaced
cite. With lib/changelog.sh alone reverted they red, which is what the
green suite was hiding.
Refs #262.
