TICKET-007 (backend): meals — from-log, unpack, components, recursive nutrition, cycle detection

backend/routers/foods.py

@@ -4,7 +4,7 @@ from fastapi import APIRouter, Depends, HTTPException, Query
 from sqlalchemy.orm import Session
 
 from database import get_db
-from schemas import FoodCreate, FoodRead, FoodUpdate
+from schemas import FoodCreate, FoodRead, FoodUpdate, MealRead
 from services.foods import (
     BarcodeConflictError,
     create_food,
@@ -43,9 +43,11 @@ def _list_foods(
                       include_deleted=include_deleted)
 
 
-@router.get("/{food_id}", response_model=FoodRead)
+@router.get("/{food_id}")
 def _get_food(food_id: int, db: Session = Depends(get_db)):
-    """Get a single food, including soft-deleted ones (for historical logs)."""
+    """Get a single food, including soft-deleted ones (for historical logs).
+    Returns MealRead (with components + computed nutrition) for meals,
+    plain FoodRead for non-meals."""
     food = get_food(db, food_id)
     if food is None:
         raise HTTPException(status_code=404, detail="Food not found")