a391c51761
For non-managers /listsessions now shows player-friendly actions: - ✅ Записаться <date> when not registered - ✖️ Выйти <date> when already active - ✖️ Выйти из ожидания <date> when waitlisted Extend SessionListItemDto and the shared SQL query with IsUserActive and IsUserWaitlisted flags so the renderer can choose the right button. Update tests to cover all three player states.