feat: 将Markdown渲染改为HTML渲染

- CMS相关字段由Markdown改为WYSIWYG，前端做出对应更改
- AssetUrl重写：将CMS地址重写为本地API

server/utils/rewriteAssetUrls.test.ts

@@ -0,0 +1,14 @@
+import { test, expect, describe } from 'vitest';
+import { rewriteAssetUrls } from './rewriteAssetUrls';
+
+describe('rewriteAssetUrls', () => {
+  const cmsBase = 'https://cms.example.com';
+  const proxyBase = '/api/assets';
+  const baseHTML =
+    '<img src="https://cms.example.com/assets/rand-om__-uuid-1234" /><a href="https://cms.example.com/assets/rand-om__-uuid-5678">Link</a><video src="https://otherdomain.com/video.mp4"></video>';
+  test('rewrites asset URLs correctly', () => {
+    expect(rewriteAssetUrls(baseHTML, cmsBase, proxyBase)).toBe(
+      '<img src="/api/assets/rand-om__-uuid-1234"><a href="/api/assets/rand-om__-uuid-5678">Link</a><video src="https://otherdomain.com/video.mp4"></video>'
+    );
+  });
+});