📝 Логирование + graceful shutdown

- Добавлен app/logger.py — loguru с ротацией (консоль, файл, ошибки)
- main.py: логи старта/стопа, graceful shutdown (SIGTERM/SIGINT/stop_signal)
- Все хендлеры: логирование ключевых действий пользователя
- Логи сохраняются в logs/bot_YYYY-MM-DD.log, ротация 30 дней
- Ошибки отдельно в logs/errors_*

app/handlers/booking.py

@@ -16,6 +16,7 @@ from app.keyboards.menu import menu, cancel_menu
 from app.keyboards.calendar import get_dates_keyboard
 from app.keyboards.time_slots import get_time_keyboard
 from app.keyboards.confirm_booking import get_confirm_booking_keyboard
+from app.logger import logger
 
 router = Router()
 
@@ -55,6 +56,7 @@ async def choose_service(
     services = SERVICES
 
     service_name = services[callback.data]
+    logger.debug("User {uid} selected service: {srv}", uid=callback.from_user.id, srv=service_name)
 
     await state.update_data(
         service=service_name
@@ -84,6 +86,7 @@ async def choose_master(
     masters = MASTERS
 
     master_name = masters[callback.data]
+    logger.debug("User {uid} selected master: {m}", uid=callback.from_user.id, m=master_name)
 
     await state.update_data(
         master=master_name
@@ -118,6 +121,7 @@ async def choose_date(
     await state.update_data(
         date=selected_date
     )
+    logger.debug("User {uid} selected date: {d}", uid=callback.from_user.id, d=selected_date)
 
     data = await state.get_data()
 
@@ -156,6 +160,7 @@ async def choose_time(
     await state.update_data(
         time=selected_time
     )
+    logger.debug("User {uid} selected time: {t}", uid=callback.from_user.id, t=selected_time)
 
     data = await state.get_data()