fix: show all events (including weekly recurring) in Telegram bot

get_schedule_for_date, show_items_for_deletion, and send_reminders were
querying events with Event.date == date_str, which only matches one-off
events or a recurring event's anchor date. Recurring events on later
occurrences (and any per-date exception overrides) were silently
skipped, so /today could show just one event when several were
scheduled. Switched all three to materialize_events, already used by
the web frontends, which correctly expands recurring events.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

backend/telegram_bot.py

@@ -12,7 +12,7 @@ import asyncio
 import logging
 
 from backend.database import AsyncSessionLocal, Task, Event, TelegramUser
-from backend.utils import get_week_range, format_date_russian, check_event_overlap, get_weekday_from_date
+from backend.utils import get_week_range, format_date_russian, check_event_overlap, get_weekday_from_date, materialize_events
 from backend.models import TaskCreate, EventCreate
 
 logging.basicConfig(level=logging.INFO)
@@ -58,11 +58,8 @@ async def get_schedule_for_date(date_str: str, add_prefix: bool = False) -> str:
         weekly_items = await materialize_weekly_tasks(db, date_str, date_str)
         weekly_tasks = [item for item in weekly_items if item.kind == "task"]
         
-        # Получаем events
-        result = await db.execute(
-            select(Event).where(Event.date == date_str)
-        )
-        events = result.scalars().all()
+        # Получаем events (включая еженедельные повторения и исключения)
+        events = await materialize_events(db, date_str, date_str)
         events = sorted(events, key=lambda e: e.start_time)
 
         # Определяем префикс для даты
@@ -523,11 +520,8 @@ async def show_items_for_deletion(query, date_str: str):
         weekly_items = await materialize_weekly_tasks(db, date_str, date_str)
         weekly_tasks = [item for item in weekly_items if item.kind == "task"]
         
-        # Получаем events
-        result = await db.execute(
-            select(Event).where(Event.date == date_str)
-        )
-        events = result.scalars().all()
+        # Получаем events (включая еженедельные повторения и исключения)
+        events = await materialize_events(db, date_str, date_str)
         events = sorted(events, key=lambda e: e.start_time)
 
         keyboard = []
@@ -661,16 +655,10 @@ async def send_reminders():
             target_time_str = target_time.strftime("%H:%M")
             
             async with AsyncSessionLocal() as db:
-                # Находим события, которые начинаются через 5 минут
-                result = await db.execute(
-                    select(Event).where(
-                        and_(
-                            Event.date == target_date.strftime("%Y-%m-%d"),
-                            Event.start_time == target_time_str
-                        )
-                    )
-                )
-                events = result.scalars().all()
+                # Находим события (включая еженедельные), которые начинаются через 5 минут
+                target_date_str = target_date.strftime("%Y-%m-%d")
+                day_events = await materialize_events(db, target_date_str, target_date_str)
+                events = [event for event in day_events if event.start_time == target_time_str]
 
                 if events:
                     # Получаем всех пользователей