fix: login landing from menu_access, silent optional Layout 403

Co-authored-by: Cursor <cursoragent@cursor.com>

src/views/Welcome.vue

@@ -0,0 +1,75 @@
+<template>
+  <div class="welcome-page">
+    <el-result icon="warning" title="暂无可用功能菜单">
+      <template #sub-title>
+        <p v-if="yonghuid">用户ID：{{ yonghuid }}</p>
+        <p v-if="roleNames.length">已绑角色：{{ roleNames.join('、') }}（角色内可能未含功能权限码）</p>
+        <p v-else>该账号未绑定任何角色</p>
+        <p class="hint">请超管在「后台用户」中为该用户ID绑定角色；角色内需含对应权限（考核=kaohepeizhi）</p>
+      </template>
+      <template #extra>
+        <el-button type="primary" @click="goTry">刷新权限</el-button>
+        <el-button @click="logout">退出登录</el-button>
+      </template>
+    </el-result>
+  </div>
+</template>
+
+<script setup>
+import { computed, onMounted } from 'vue'
+import { useRouter } from 'vue-router'
+import { ElMessage } from 'element-plus'
+import request from '@/utils/request'
+import {
+  clearMenuAccess,
+  getDefaultLandingPath,
+  getMenuAccess,
+  JITUAN_API,
+  setMenuAccess,
+} from '@/utils/club-context'
+
+const router = useRouter()
+const access = computed(() => getMenuAccess() || {})
+const yonghuid = computed(() => access.value.yonghuid || '')
+const roleNames = computed(() => access.value.role_names || [])
+
+const goTry = async () => {
+  try {
+    const res = await request.get(JITUAN_API.menuAccess)
+    if (res.code === 0 && res.data) {
+      setMenuAccess(res.data)
+      const landing = getDefaultLandingPath(res.data)
+      if (landing) {
+        ElMessage.success('权限已生效')
+        router.replace(landing)
+        return
+      }
+    }
+    ElMessage.warning('仍无可用菜单，请确认角色与权限已绑定')
+  } catch {
+    ElMessage.error('刷新失败')
+  }
+}
+
+const logout = () => {
+  localStorage.removeItem('token')
+  clearMenuAccess()
+  router.replace('/login')
+}
+
+onMounted(() => {
+  const landing = getDefaultLandingPath()
+  if (landing) router.replace(landing)
+})
+</script>
+
+<style scoped>
+.welcome-page {
+  padding: 48px 24px;
+}
+.hint {
+  margin-top: 8px;
+  color: #909399;
+  font-size: 14px;
+}
+</style>