Generates bg-trainer game data (DataItem arrays, mode definitions, lesson registration) from a Bulgarian textbook lesson file at documents/lessons/lesson-N.md. Use when the user asks to cover / port / add / generate games (modes, drills, exercises) for a specific lesson file, enable a lesson marked "Скоро", or extend an existing lesson's mode coverage. Encodes project-specific engine selection, item schemas, i18n (ru/uk) rules, and gotchas learned from post-release fixes (disambiguation, Lq "/" split, no-context judgments, LiEngine focus markers, rule/hint/label separation).
2026-04-18