check.py enforces no adjacent consonants, no identical adjacent vowels and
no q for both languages, and joins and checks every proposed name from
names.yaml. The superseded doubled-letter placeholder rule is deleted. Briefs
record Deru's 2026-11-06 answers as settled versus invented and list every
earlier candidate's result. One stray Sa'auei'a respelled.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>