feat: 新增多语言文案与组件国际化适配

本次提交完成了大量多语言相关的新增与优化工作：
1. 新增充值、案例、会员资产、订单等页面的中文/英文翻译文案
2. 新增企业微信客服、时间选择、支付弹窗等组件的多语言包
3. 优化工具函数与自定义页面的多语言适配，替换硬编码提示文案
4. 新增会员等级规则、积分商品、退款管理等页面的国际化支持
5. 修复企业微信JS-SDK的错误提示文案硬编码问题

lang/en-us/point/goods_list.js

@@ -0,0 +1,29 @@
+export const lang = {
+	// Search
+	searchPlaceholder: 'Please enter product keywords',
+
+	// Sort
+	comprehensive: 'Comprehensive',
+	points: 'Points',
+	newArrival: 'New Arrival',
+	filter: 'Filter',
+
+	// Goods list
+	stock: 'Stock',
+	noGoods: 'No point products available',
+
+	// Filter drawer
+	pointRange: 'Point Range',
+	minPlaceholder: 'Min',
+	maxPlaceholder: 'Max',
+	allCategories: 'All Categories',
+	all: 'All',
+	reset: 'Reset',
+	confirm: 'Confirm',
+
+	// Tips
+	pleaseEnterMaxPrice: 'Please enter the maximum price',
+	priceCannotBeLessThanZero: 'Filter price cannot be less than 0',
+	minCannotBeGreaterThanMax: 'Minimum price cannot be greater than maximum price',
+	maxCannotBeLessThanMin: 'Maximum price cannot be less than minimum price',
+}

lang/en-us/point/payment.js

@@ -59,5 +59,32 @@ export const lang = {
 		pointsSuffix: ' pts',
 		submitOrder: 'Submit Order',
 		shortByForMinimum: '{amount} more for minimum order'
+	},
+
+	// ====== Toast Messages ======
+	toast: {
+		orderDataNotFound: 'Failed to get data required for order creation!',
+		pleaseEnterMobile: 'Please enter your mobile number',
+		pleaseEnterCorrectMobile: 'Please enter a valid mobile number',
+		noDeliveryMethod: 'Merchant has not set up delivery methods',
+		pleaseSelectAddress: 'Please select your delivery address first',
+		noPickupStore: 'No stores available for pickup, please choose another delivery method',
+		pleaseEnterReservedMobile: 'Please enter your reserved phone number',
+		pleaseEnterCorrectReservedMobile: 'Please enter a valid reserved phone number',
+		pleaseSelectPickupTime: 'Please select pickup time',
+		noDeliveryStore: 'No stores available for delivery, please choose another delivery method',
+		pleaseSelectDeliveryTime: 'Please select delivery time'
+	},
+
+	// ====== Modal ======
+	modal: {
+		orderNotCreated: 'Order Not Created',
+		goToSet: 'Go to Set'
+	},
+
+	// ====== Time Selection ======
+	time: {
+		today: 'Today',
+		tomorrow: 'Tomorrow'
 	}
 }