- Replace source/slava_leaderboard_2026_q1.xlsx with the Q4 2026 workbook
and regenerate data/*.csv via scripts/export_xlsx.py.
- Remove the unwired files from the previous upload (data/Leaderboard.csv,
data/Subject.csv, data/Type_of_question.csv, data/Provocativeness.csv,
pages/Leaderboard.py, pages/main.py, slava_data.py): the app never loaded
them, and their names collided by case with the files it does load.
- Update captions, About page and README to "IV квартал 2026, 35 моделей";
export script now defaults to the Q4 workbook and 35 models.
- Explain the rank column: it ranks by the mean of the three averages,
while rows are ordered by LEADERBOARD.
