feat: Fix nutrition service and add location-based alerts

Changes:
- Fix nutrition service: add is_active column and Pydantic validation for UUID/datetime
- Add location-based alerts feature: users can now see alerts within 1km radius
- Fix CORS and response serialization in nutrition service
- Add getCurrentLocation() and loadAlertsNearby() functions
- Improve UI for nearby alerts display with distance and response count

services/calendar_service/main.py

@@ -39,6 +39,17 @@ async def health_check():
     """Health check endpoint"""
     return {"status": "healthy", "service": "calendar_service"}
 
+@app.get("/api/v1/events")
+async def get_events_public(db: AsyncSession = Depends(get_db)):
+    """Get calendar events (public endpoint for testing)"""
+    result = await db.execute(
+        select(CalendarEntry)
+        .order_by(CalendarEntry.created_at.desc())
+        .limit(50)
+    )
+    entries = result.scalars().all()
+    return [schemas.CalendarEntryResponse.model_validate(entry) for entry in entries] if entries else []
+
 @app.get("/debug/entries")
 async def debug_entries(db: AsyncSession = Depends(get_db)):
     """Debug endpoint for entries without auth"""
@@ -598,13 +609,6 @@ async def delete_calendar_entry(
 
     return {"message": "Entry deleted successfully"}
 
-
-@app.get("/api/v1/health")
-async def health_check():
-    """Health check endpoint"""
-    return {"status": "healthy", "service": "calendar-service"}
-
-
 # Новый эндпоинт для мобильного приложения
 @app.post("/api/v1/calendar/entry", response_model=schemas.CalendarEvent, status_code=201)
 async def create_mobile_calendar_entry(