i18n: 替换所有硬编码文本为多语言配置

将项目中各处的硬编码字符串替换为国际化语言包调用，统一管理页面和组件的文案内容，方便后续多语言适配与维护

pages_goods/public/js/cart.js

@@ -233,14 +233,14 @@ export default {
 			}
 			if (cart_id.length == 0) {
 				this.$util.showToast({
-					title: '请选择要删除的商品'
+					title: this.$lang('cart.selectGoodsToDelete')
 				});
 				return;
 			}
 
 			uni.showModal({
-				title: '提示',
-				content: cart_id.length > 1 ? '确定要删除这些商品吗？' : '确定要删除该商品吗？',
+				title: this.$lang('common.tip'),
+				content: cart_id.length > 1 ? this.$lang('cart.confirmDeleteSelected') : this.$lang('cart.confirmDeleteOne'),
 				success: res => {
 					if (res.confirm) {
 						cart_id = cart_id.toString();
@@ -381,8 +381,8 @@ export default {
 		 */
 		clearInvalidGoods() {
 			uni.showModal({
-				title: '提示',
-				content: '确定要清空这些商品吗？',
+				title: this.$lang('common.tip'),
+				content: this.$lang('cart.confirmClearInvalid'),
 				success: res => {
 					if (res.confirm) {
 						var cart_ids = [];
@@ -432,11 +432,11 @@ export default {
 			if (event.type == 'plus') {
 				if (data.max_buy > 0 && data.max_buy < data.stock) {
 					this.$util.showToast({
-						title: '该商品每人限购' + data.max_buy + '件'
+						title: this.$lang('cart.personLimit', { count: data.max_buy })
 					});
 				} else {
 					this.$util.showToast({
-						title: '库存不足'
+						title: this.$lang('sku.insufficientStock')
 					});
 				}
 			} else {