feat: persist customer product and shop favorites through the live API

Replace mall fixture favorites with customer-scoped endpoints, and send signed-out shoppers back to the page they left after sign-in.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/mall/locales/product.ts

@@ -24,6 +24,8 @@ export default {
       addedCart: "Added to cart",
       favorite: "Favorite",
       unfavorite: "Unfavorite",
+      favoriteFailed: "Unable to update favorite",
+      favoriteLoadFailed: "Unable to load favorite state",
       noStock: "Out of stock",
       unavailable: "This combination is unavailable",
       store: "Store",
@@ -72,6 +74,8 @@ export default {
       addedCart: "已加入购物车",
       favorite: "收藏",
       unfavorite: "取消收藏",
+      favoriteFailed: "收藏更新失败",
+      favoriteLoadFailed: "无法加载收藏状态",
       noStock: "暂时缺货",
       unavailable: "该规格暂不可用",
       store: "店铺",

apps/mall/locales/stores.ts

@@ -18,6 +18,10 @@ export default {
       speed: "Delivery",
       favorite: "Follow store",
       favorited: "Following",
+      favoriteFailed: "Unable to update store favorite",
+      favoriteLoadFailed: "Unable to load store favorite",
+      notice: "Store notice",
+      afterSale: "After-sales policy",
       salesRank: "Top sellers",
       storeProducts: "Store products",
       sortPrice: "Price",
@@ -47,6 +51,10 @@ export default {
       speed: "发货速度",
       favorite: "收藏店铺",
       favorited: "已收藏",
+      favoriteFailed: "店铺收藏更新失败",
+      favoriteLoadFailed: "无法加载店铺收藏",
+      notice: "店铺公告",
+      afterSale: "售后服务",
       salesRank: "本店销量排行",
       storeProducts: "店内商品",
       sortPrice: "价格",

apps/mall/locales/user.ts

@@ -77,6 +77,8 @@ export default {
       removeFavorite: "Remove favorite",
       enterStore: "Enter store",
       noFavoriteStores: "No favorite stores yet.",
+      favoriteLoadFailed: "Unable to load favorites",
+      favoriteRemoveFailed: "Unable to remove favorite",
       couponsTitle: "My coupons",
       couponTitle: "Coupon",
       amount: "Amount",
@@ -174,6 +176,8 @@ export default {
       removeFavorite: "取消收藏",
       enterStore: "进入店铺",
       noFavoriteStores: "暂无关注店铺。",
+      favoriteLoadFailed: "收藏加载失败",
+      favoriteRemoveFailed: "取消收藏失败",
       couponsTitle: "我的优惠券",
       couponTitle: "优惠券",
       amount: "优惠金额",