feat: implement shop CRUD operations and fix address deletion bug

- Add shop creation, editing, and deletion functionality
- Create AddShopModal and ConfirmDeleteModal components
- Add missing backend PUT/DELETE endpoints for shops
- Fix address field not clearing when edited to empty value

backend/main.py

@@ -94,6 +94,30 @@ def read_shop(shop_id: int, db: Session = Depends(get_db)):
         raise HTTPException(status_code=404, detail="Shop not found")
     return shop
 
+@app.put("/shops/{shop_id}", response_model=schemas.Shop)
+def update_shop(shop_id: int, shop_update: schemas.ShopUpdate, db: Session = Depends(get_db)):
+    shop = db.query(models.Shop).filter(models.Shop.id == shop_id).first()
+    if shop is None:
+        raise HTTPException(status_code=404, detail="Shop not found")
+    
+    update_data = shop_update.dict()
+    for field, value in update_data.items():
+        setattr(shop, field, value)
+    
+    db.commit()
+    db.refresh(shop)
+    return shop
+
+@app.delete("/shops/{shop_id}")
+def delete_shop(shop_id: int, db: Session = Depends(get_db)):
+    shop = db.query(models.Shop).filter(models.Shop.id == shop_id).first()
+    if shop is None:
+        raise HTTPException(status_code=404, detail="Shop not found")
+    
+    db.delete(shop)
+    db.commit()
+    return {"message": "Shop deleted successfully"}
+
 # Shopping Event endpoints
 @app.post("/shopping-events/", response_model=schemas.ShoppingEventResponse)
 def create_shopping_event(event: schemas.ShoppingEventCreate, db: Session = Depends(get_db)):