feat: add and optimize multiple multilingual language packs

1. 新增拼团、砍价、分销、支付、地址、账户等多业务场景的中英文本地化文案
2. 替换项目中硬编码的文本为多语言调用，统一前端页面文案展示
3. 新增多个业务组件的国际化语言配置文件

lang/en-us/order/refund_batch.js

@@ -1,4 +1,32 @@
 export const lang = {
-	//title为每个页面的标题
-	title: 'Apply for Refund',
-}
+	//title is the title of each page
+	title: 'Batch Refund',
+
+	// ====== Refund Form ======
+	form: {
+		refundReason: 'Refund Reason:',
+		refundType: 'Refund Type:',
+		refundOnly: 'Refund Only',
+		returnRefund: 'Return & Refund',
+		refundAmount: 'Refund Amount:',
+		refundRemark: 'Refund Remark',
+		pleaseSelect: 'Please Select',
+		remarkPlaceholder: 'Please enter refund remark (optional)'
+	},
+
+	// ====== Refund Reason Popup ======
+	reasonPopup: {
+		title: 'Refund Reason',
+		confirm: 'Confirm'
+	},
+
+	// ====== Toast Messages ======
+	toast: {
+		noRefundInfo: 'Failed to get refund information for this order item'
+	},
+
+	// ====== Form Validation ======
+	validate: {
+		pleaseSelectRefundReason: 'Please select a refund reason'
+	}
+}