update

frontend/src/assets/main.css

@@ -1,5 +1,6 @@
 @import './base.css';
-@import 'tailwindcss';
+@import 'tailwindcss/theme' layer(theme);
+@import 'tailwindcss/utilities' layer(utilities);
 
 /* 应用全局样式 */
 #app {

frontend/src/utils/request.ts

@@ -53,7 +53,7 @@ async function request<T = unknown>(url: string, options: RequestOptions = {}):
       signal: controller.signal,
     })
 
-    // 401 未授权：跳过登录/注册接口（由页面自行处理错误提示），其余接口重定向到登录页
+    // 401 未授权：登录/注册接口解析后端错误信息，其余接口重定向到登录页
     if (response.status === 401) {
       const isAuthEndpoint = /\/api\/v1\/(login|register)$/.test(url)
       if (!isAuthEndpoint) {
@@ -64,9 +64,15 @@ async function request<T = unknown>(url: string, options: RequestOptions = {}):
           window.location.pathname + window.location.search,
         )
         window.location.href = `/login?redirect=${redirect}`
-      }
         throw new ApiError('登录已过期，请重新登录', 401)
       }
+      let msg = '用户名或密码错误'
+      try {
+        const body = await response.json()
+        if (body.message) msg = body.message
+      } catch { /* ignore parse error */ }
+      throw new ApiError(msg, 401)
+    }
 
     // 防护非 JSON 响应（如网关 HTML 错误页）
     let result