feat: 导航栏显示 logo，浏览器标签页正确加载 favicon

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

Author: 1ssqq1lxr

docusaurus.config.js

@@ -10,6 +10,12 @@ const config = {
   organizationName: 'quickmsg',
   projectName: 'fcp-doc',
   onBrokenLinks: 'throw',
+  head: [
+    {
+      tagName: 'link',
+      attributes: { rel: 'icon', type: 'image/x-icon', href: '/fcp-doc/favicon.ico' },
+    },
+  ],
   onBrokenMarkdownLinks: 'warn',
   i18n: {
     defaultLocale: 'zh-Hans',
@@ -36,6 +42,13 @@ const config = {
     /** @type {import('@docusaurus/preset-classic').ThemeConfig} */
     ({
       navbar: {
+        logo: {
+          src: 'logo.svg',
+          srcDark: 'logo.svg',
+          width: 36,
+          height: 36,
+          alt: 'FCP',
+        },
         title: 'FCP',
         items: [],
       },