i18n: 补充多语言文案并优化英文tabbar命名

1. 为支付模块新增未获取到支付信息的多语言文案
2. 为通用模块新增网络错误、视频号播放限制、提交/加载相关文案
3. 优化英文环境底部tabbar的命名为更自然的首字母大写形式

lang/en-us/common.js

@@ -2,10 +2,10 @@ export const lang = {
 
 	// 底部选项卡
 	tabBar: {
-		home: 'index',
-		category: 'category',
-		cart: 'cart',
-		member: 'member',
+		home: 'Home',
+		category: 'Category',
+		cart: 'Cart',
+		member: 'Me',
 	},
 
 	//公共
@@ -57,6 +57,7 @@ export const lang = {
 	// diy custom page (diy-specific copy, generic HTTP errors reuse http.*)
 	diy: {
 		networkErrorTitle: 'Notice',
+		networkError: 'Network error, please try again later',
 		retry: 'Retry',
 		noDiyData: 'Custom page data not configured',
 		locationNotAvailable: 'Location not available',
@@ -111,6 +112,7 @@ export const lang = {
 		notSupported: 'Current environment does not support WeChat Channel',
 		missingFields: 'Missing required field: {field}',
 		playFailed: 'WeChat video playback failed!',
+		wechatMpOnly: 'WeChat Channel only plays in WeChat Mini Program',
 	},
 
 	// uniapp utility functions
@@ -256,7 +258,14 @@ export const lang = {
 	addToCartFailMin: 'Minimum purchase quantity not met',
 	addToCartFailStock: 'Insufficient Stock',
 
-	// 咨询
+	// generic submit/version/loading text (key lives in root because common.js's lang object IS the common namespace)
+	submitSuccess: 'Submit Success',
+	submitFail: 'Submit Failed',
+	versionInfo: 'Version Info',
+	commitId: 'Commit ID',
+	buildTime: 'Build Time',
+	loading: 'Loading...',
+
 	consult: 'Consult Now',
 	consultSuccess: 'Consultation Successful',
 	consultFail: 'Consultation Failed',