feat(admin): strip SPA ops menus; redirect old hashes to native WP (Phase 4)

SPA shop/forum/payment/users sections now keep configuration pages only.
Operational workbenches were removed from the sidebar and loaders; legacy
hash routes open NativeOpsRedirect into the matching WP native admin page.
Admin SPA production build refreshed accordingly.

assets/admin/src/pages/placeholder/NativeOpsRedirect.vue

@@ -0,0 +1,57 @@
+<template>
+  <div class="aks-native-ops-redirect">
+    <h2>{{ title }}</h2>
+    <p class="desc">
+      此运营功能已迁移到 WordPress 原生后台侧栏（对齐 zibll）。正在跳转…
+    </p>
+    <p v-if="nativeUrl">
+      <a class="button button-primary" :href="nativeUrl">立即打开原生页面</a>
+    </p>
+    <p v-else class="desc">未配置原生跳转地址，请从左侧 WP 菜单进入。</p>
+  </div>
+</template>
+
+<script setup>
+import { computed, onMounted } from 'vue'
+import { useRoute } from 'vue-router'
+
+const route = useRoute()
+
+const title = computed(() => route.meta?.title || '运营功能已迁移')
+const nativeUrl = computed(() => {
+  const path = route.meta?.nativeAdminPath || ''
+  if (!path) return ''
+  const base = (window.aksrtAdminData?.adminUrl || '/wp-admin/').replace(/\/?$/, '/')
+  return base + path.replace(/^\//, '')
+})
+
+onMounted(() => {
+  if (nativeUrl.value) {
+    window.location.replace(nativeUrl.value)
+  }
+})
+</script>
+
+<style scoped>
+.aks-native-ops-redirect {
+  max-width: 640px;
+  margin: 48px auto;
+  padding: 24px;
+  background: var(--aks-surface, #fff);
+  border-radius: 8px;
+  border: 1px solid var(--aks-border, #e5e7eb);
+}
+.desc {
+  color: #646970;
+  line-height: 1.6;
+}
+.button {
+  display: inline-block;
+  margin-top: 8px;
+  padding: 8px 14px;
+  background: #2271b1;
+  color: #fff;
+  border-radius: 4px;
+  text-decoration: none;
+}
+</style>