feat: 新增多语言文案、优化导航及工具函数，修复部分业务逻辑

1. 新增多语言资源文件，覆盖文章、预约日期、会员信息、优惠券、表单、购物车、积分商城、分销、AI聊天等多个模块
2. 优化底部导航组件，使用多语言配置替代硬编码文案
3. 重构工具函数，新增从后端数据提取多语言文案的工具方法
4. 修复邀请好友页面的保存提示文案，替换为多语言版本
5. 修复商品SKU组件的提示文案，使用多语言配置
6. 重构AI聊天页面的帮助文档和回复模板，使用多语言配置
7. 优化空状态组件，支持多语言默认文案
8. 修复跳转逻辑，补全参数传递
9. 新增本地开发环境配置

lang/en-us/fenxiao/apply.js

@@ -1,5 +1,55 @@
 export const lang = {
 	//title为每个页面的标题
 	// title: 'Distributor Application'
-	title: ''
-}
+	title: '',
+
+	// Page header
+	pleaseFillApplyInfo: 'Please fill in application information',
+
+	// Form fields
+	inviter: 'Inviter',
+	nameLabel: 'Name',
+	namePlaceholder: 'Please enter {name} name',
+	mobile: 'Mobile',
+	mobilePlaceholder: 'Please enter mobile number',
+
+	// Agreement
+	haveReadAndUnderstand: 'I have read and understand',
+	applyAgreement: '【{name} Application Agreement】',
+
+	// Buttons
+	applyBecome: 'Apply to become {name}',
+	reapply: 'Reapply',
+
+	// Application conditions
+	applyConditionTitle: 'Distributor Application Conditions',
+	becomeConditionTitle: 'Conditions to Become a Distributor',
+	conditionConsumeCount: 'To apply to become {name}, your purchase count must reach {count} times',
+	conditionConsumeMoney: 'To apply to become {name}, your purchase amount must reach {money} yuan',
+	conditionBuyGoods: 'To apply to become {name}, you need to purchase one of the following specified products',
+	becomeConditionBuyGoods: 'To become {name}, you need to purchase one of the following specified products',
+
+	// Expand/collapse
+	expandMore: 'Expand more',
+	collapse: 'Collapse',
+
+	// Status messages
+	notFenxiao: 'You are not a distributor yet',
+	applyPending: 'You have submitted the {name} application, waiting for review',
+	applyRejected: 'Your {name} application has been rejected, please try again',
+
+	// Default values
+	none: 'None',
+
+	// Toast messages
+	merchantNotOpenFenxiao: 'Merchant has not enabled distribution',
+	pleaseReadAndCheckAgreement: 'Please read the agreement carefully and check it',
+
+	// Page title suffix
+	applySuffix: 'Application',
+
+	// Form validation
+	pleaseEnterName: 'Please enter {name} name',
+	pleaseEnterMobile: 'Please enter mobile number',
+	pleaseEnterValidMobile: 'Please enter a valid mobile number',
+}