Item original-ja:19 is refused V11DuplicateRole in every round because the
encoder prompt never stated the rule. The prompt now says a role holds one
filler, coordinated fillers are one group referent, each member related by
member_of from member to group. Validator and data untouched; the prompt
digest changes by design.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>