- Add confirmed_date, confirmed_group, confirmed_comment to group_bookings (migration #10)
- Linear booking flow: Новая → Связались → Подтвердить (modal) / Отказ
- Confirm modal with cascading selects: Hall → Trainer → Group → Date → Comment
- Groups merged by groupId — shows all days/times (e.g. "СР 20:00, ПТ 16:15")
- Auto-prefill hall/trainer/group from booking's groupInfo via fuzzy scoring
- Proper SHORT_DAYS constant for weekday abbreviations
- Filter chips with status counts, declined sorted to bottom
- "Вернуть" on confirmed/declined returns to "Связались" (not "Новая")
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
diana.dolgolyova
1bfd502930