feat: 新增隐私政策页面，Footer增加链接

services/legal.service.ts

@@ -0,0 +1,16 @@
+import { fetchAPI } from "./api-client";
+import type { SimpleContentPageDetail, WagtailListResponse } from "@/types/wagtail";
+
+/**
+ * 根据 slug 获取通用富文本内容页（apps.core.SimpleContentPage），
+ * 用于隐私政策、服务条款等法务/说明类页面。
+ */
+export async function getSimpleContentPageBySlug(
+  slug: string,
+): Promise<SimpleContentPageDetail | null> {
+  const res = await fetchAPI<WagtailListResponse<SimpleContentPageDetail>>(
+    `/api/v2/pages/?type=core.SimpleContentPage&slug=${encodeURIComponent(slug)}&fields=body&limit=1`,
+    { tags: [`legal-page:${slug}`] },
+  );
+  return res.items[0] ?? null;
+}