feat: redirect logged-in users to welcome page instead of login page

dashboard/src/router/index.ts

@@ -34,7 +34,7 @@ router.beforeEach(async (to, from, next) => {
 
   // 如果用户已登录且试图访问登录页面，则重定向到首页
   if (to.path === '/auth/login' && auth.has_token()) {
-    return next(auth.returnUrl || '/');
+    return next('/welcome');
   }
 
   if (to.matched.some((record) => record.meta.requiresAuth)) {

dashboard/src/stores/auth.ts

@@ -25,7 +25,8 @@ export const useAuthStore = defineStore({
         localStorage.setItem('user', this.username);
         localStorage.setItem('token', res.data.data.token);
         localStorage.setItem('change_pwd_hint', res.data.data?.change_pwd_hint);
-        router.push(this.returnUrl || '/dashboard/default');
+        this.returnUrl = null;
+        router.push('/welcome');
       } catch (error) {
         return Promise.reject(error);
       }

dashboard/src/views/authentication/auth/LoginPage.vue

@@ -25,7 +25,7 @@ function toggleTheme() {
 onMounted(() => {
   // 检查用户是否已登录，如果已登录则重定向
   if (authStore.has_token()) {
-    router.push(authStore.returnUrl || '/');
+    router.push('/welcome');
     return;
   }