refactor: 完成多语言国际化全量替换与补充

1. 新增大量中英文语言包文件，覆盖自定义组件、页面、工具类的文案
2. 替换硬编码文本为多语言调用，统一全局文案管理
3. 优化语言包结构，拆分公共模块与业务模块
4. 修复部分语言加载与国际化适配问题

lang/en-us/common.js

@@ -18,7 +18,40 @@ export const lang = {
 		goodsRecommendTitle: 'Guess you like',
 		currencySymbol: '¥',
 		submit: 'Submit',
-		searchTip: 'Please enter search keywords'
+		searchTip: 'Please enter search keywords',
+		// version update
+		updateTip: 'Update Available',
+		updateReady: 'A new version is ready, restart the app now?',
+		// network status
+		networkLost: 'Network Disconnected',
+		networkCheck: 'Please check your network connection',
+		// config related
+		config: {
+			siteJsNotConfigured: 'In the mini-program release environment, the site.js file must be configured, otherwise the default configuration will be used, which affects mini-program custom distribution!'
+		},
+		// platform detection
+		platform: {
+			wechatOfficialAccount: 'WeChat Official Account',
+			wechatMiniProgram: 'WeChat Mini Program',
+			alipayMiniProgram: 'Alipay Mini Program',
+			baiduMiniProgram: 'Baidu Mini Program',
+			toutiaoMiniProgram: 'Toutiao Mini Program',
+			qqMiniProgram: 'QQ Mini Program',
+			kuaishouMiniProgram: 'Kuaishou Mini Program',
+			jdMiniProgram: 'JD Mini Program',
+			miniProgram360: '360 Mini Program',
+			xhsMiniProgram: 'Xiaohongshu Mini Program',
+			harmonyService: 'Harmony Service',
+			app: 'APP',
+			pc: 'PC',
+			h5: 'H5',
+			unknown: 'Unknown Platform',
+		},
+	},
+
+	// navigation utility
+	navigation: {
+		serviceUnavailable: 'Navigation service temporarily unavailable',
 	},
 
 	// diy custom page
@@ -58,6 +91,7 @@ export const lang = {
 		serviceUnavailable: 'Customer service temporarily unavailable',
 		wxworkLinkNotConfigured: 'WeChat Work link not configured',
 		fromFloatButton: 'Inquiry from floating button',
+		serviceTypeNotConfigured: 'Customer service type not configured',
 	},
 
 	// WeChat Work JS-SDK
@@ -153,6 +187,8 @@ export const lang = {
 		weekThursday: 'Thu',
 		weekFriday: 'Fri',
 		weekSaturday: 'Sat',
+		// error messages
+		deepCloneNotObject: 'obj is not an object!',
 	},
 
 	// AI service
@@ -215,11 +251,6 @@ export const lang = {
 	logoutTitle: 'Tip',
 	logoutContent: 'Are you sure you want to log out?',
 
-	// navigation utility
-	navigation: {
-		serviceUnavailable: 'Navigation service temporarily unavailable',
-	},
-
 	// WeChat Map JSSDK
 	mapWxJssdk: {
 		// error messages