Initial project scaffold

Full-stack Dutch supermarket price tracker with FastAPI backend,
PostgreSQL/SQLAlchemy, Albert Heijn scraper, and Next.js frontend.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/routers/stores.py

@@ -0,0 +1,14 @@
+from fastapi import APIRouter, Depends
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from ..database import get_db
+from ..models import Store
+from ..schemas import Store as StoreSchema
+
+router = APIRouter(prefix="/api/stores", tags=["stores"])
+
+
+@router.get("", response_model=list[StoreSchema])
+def list_stores(db: Session = Depends(get_db)):
+    return db.scalars(select(Store).order_by(Store.name)).all()