Review nits on #2, both cosmetic.
The sentence added last round left its paragraph at 127 characters in a file
that otherwise wraps comments at 78-79 — the rewrap after the insert simply
did not happen. `awk 'length($0)>80'` over both files now reports one comment
line, the pre-existing 93-character usage string at :4.
Scenario 14's header called its fixture "the only shape that can tell the two
timestamps apart". The property it needs is old mtime with fresh ctime; an
old directory renamed a moment ago is the production instance of that, not
the only construction of it. "Production's shape" was already carrying the
argument.
No behaviour change and no assertion change.
claude
b0d63c807b
