优化构架

src/app/pages/ForbiddenView.vue

@@ -0,0 +1,28 @@
+<script setup lang="ts">
+import { computed } from 'vue'
+import { ShieldX } from '@lucide/vue'
+import { useRoute, useRouter } from 'vue-router'
+import { sanitizeInternalPath } from '@/core/routing/accessDecision'
+import { useAccessPreviewStore } from '@/core/access/accessPreview'
+
+const route = useRoute()
+const router = useRouter()
+const access = useAccessPreviewStore()
+const sourcePath = computed(() => sanitizeInternalPath(route.query.from))
+
+async function returnToAccessiblePage() {
+  if (access.firstAccessiblePath) await router.replace(access.firstAccessiblePath)
+}
+</script>
+
+<template>
+  <section class="forbidden-page" aria-labelledby="forbidden-title">
+    <div class="forbidden-icon" aria-hidden="true"><ShieldX :size="32" /></div>
+    <p class="section-kicker">403 · 权限不足</p>
+    <h2 id="forbidden-title">当前登录账号无法访问此页面</h2>
+    <p>请联系平台管理员核对账号角色和权限配置。</p>
+    <p class="forbidden-source">来源页面：{{ sourcePath }}</p>
+    <el-button v-if="access.firstAccessiblePath" type="primary" @click="returnToAccessiblePage">返回可访问页面</el-button>
+    <p v-else>当前账号暂无可访问的业务菜单。</p>
+  </section>
+</template>