140 fixed-seed fictional charts reproduce 40% han_leak. Fix at the source with English twin fields, no tail glossary entries; Chinese output must stay byte-identical; 200-chart sweep in full pytest plus a smoke file in the quick gate. Recurrence of BUG-1272. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01LutgzyJqNhPpZy1nFsJtN3