The third silent failure was waiting, and it was the September 12th one again:
web/index.html showed the value renderer spelling struct fields with colons, two
days after the sweep that made them dots everywhere else. The check that should
have said so was anchored in NEXT.md, which is a scratch document, so it had been
reporting 'whatever this quotes has moved' into a report nobody could read.
README gains a Checking it section: the four commands, what each one means, and
the plain statement that nothing runs @checks for you. The convention it proposes
is the one this repository already has -- a lane's handoff quotes its counts.
