From final review: the problem-message example ("rule 2.1: rating is
0–5, not 9") predated the rating check's rewording ("no rating 0–5 is
9"); two doc comments still said Album rules take a plain album; and
What's New described the Album rule's old flat list.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>