refactor(http, diy): 抽象通用网络错误处理逻辑

1. 抽离通用http错误分类器到单独模块，实现错误处理复用
2. 统一多语言文案，将diy专属错误合并到通用http命名空间
3. 简化diy页面的错误处理代码，降低维护成本

lang/en-us/common.js

@@ -54,21 +54,14 @@ export const lang = {
 		serviceUnavailable: 'Navigation service temporarily unavailable',
 	},
 
-	// diy custom page
+	// diy custom page (diy-specific copy, generic HTTP errors reuse http.*)
 	diy: {
-		networkError: 'Network error, please try again later',
 		networkErrorTitle: 'Notice',
 		retry: 'Retry',
 		noDiyData: 'Custom page data not configured',
 		locationNotAvailable: 'Location not available',
-		// detailed data-load failure messages
+		// detailed data-load failure template (diy-specific, {reason} is filled by generic http.*)
 		loadFailTpl: 'Failed to load page data: {reason}, please try again later',
-		errNotFound: 'API not found',
-		errServer: 'Server error',
-		errAuth: 'No access permission',
-		errRequest: 'Request failed',
-		errTimeout: 'Request timeout',
-		errNetwork: 'Network connection failed',
 	},
 
 	//customer service
@@ -144,13 +137,17 @@ export const lang = {
 		requestFailed: '{url} request failed. {err}',
 		// network timeout
 		timeout: 'Network request timeout, please try again later',
-		// network connection failed
-		networkError: 'Network connection failed, please check your network',
+		// network connection failed / generic network error (unified copy, reused by diy and other generic scenarios)
+		networkError: 'Network error, please try again later',
 		// server error
-		serverError: 'Service temporarily unavailable, please try again later',
+		serverError: 'Server error, please try again later',
+		// API not found (HTTP 404)
+		notFound: 'API not found',
+		// no access permission (HTTP 401 / 403)
+		auth: 'No access permission',
 		// request aborted
 		aborted: 'Request cancelled',
-		// unknown error (errorType fallback, e.g. non-5xx HTTP status like 404)
+		// unknown error (errorType fallback, e.g. non-5xx/404/401/403 HTTP status)
 		unknown: 'Request failed, please try again later',
 		// unknown error
 		unknownError: 'Request failed, please try again later',

lang/zh-cn/common.js

@@ -61,21 +61,14 @@ export const lang = {
 		weChatWorkKefu: '企业微信客服',
 	},
 
-	// diy 自定义页面
+	// diy 自定义页面(diy 专属文案,通用网络/接口错误复用 http.*)
 	diy: {
-		networkError: '网络异常，请稍后重试',
 		networkErrorTitle: '提示',
 		retry: '重试',
 		noDiyData: '未配置自定义页面数据',
 		locationNotAvailable: '未获取到定位',
-		// 数据加载失败详细文案
+		// 数据加载失败详细文案(diy 专属模板,内部 {reason} 由通用 http.* 填充)
 		loadFailTpl: '页面数据加载失败：{reason}，请稍后重试',
-		errNotFound: '接口不存在',
-		errServer: '服务器异常',
-		errAuth: '无访问权限',
-		errRequest: '请求失败',
-		errTimeout: '请求超时',
-		errNetwork: '网络连接失败',
 	},
 
 	// 客服服务
@@ -144,13 +137,17 @@ export const lang = {
 		requestFailed: '{url}请求失败. {err}',
 		// 网络超时
 		timeout: '网络请求超时，请稍后重试',
-		// 网络连接失败
-		networkError: '网络连接失败，请检查网络设置',
+		// 网络连接失败 / 通用网络异常(统一文案,供 diy 等通用场景复用)
+		networkError: '网络异常，请稍后重试',
 		// 服务器错误
-		serverError: '服务暂时不可用，请稍后重试',
+		serverError: '服务器异常，请稍后重试',
+		// 接口不存在(HTTP 404)
+		notFound: '接口不存在',
+		// 无访问权限(HTTP 401 / 403)
+		auth: '无访问权限',
 		// 请求被中断
 		aborted: '请求已取消',
-		// 未知错误(errorType 分类兜底,如非 5xx 的 HTTP 状态码 404 等)
+		// 未知错误(errorType 分类兜底,如非 5xx/404/401/403 的 HTTP 状态码)
 		unknown: '请求失败，请稍后重试',
 		// 未知错误
 		unknownError: '请求失败，请稍后重试',