perf(theme): default page title

theme/src/node/config/resolveLocaleOptions.ts

@@ -23,6 +23,7 @@ const FALLBACK_OPTIONS: PlumeThemeLocaleData = {
   navbarSocialInclude: ['github', 'twitter', 'discord', 'facebook'],
   aside: true,
   outline: [2, 3],
+  externalLinkIcon: true,
 
   // page meta
   editLink: true,

theme/src/node/plugins/markdown-title.ts

@@ -21,8 +21,10 @@ export function markdownTitlePlugin(): Plugin {
         })
         source = `${matter}\n${content}`
         const result = render(source, env)
-        if (title)
-          env.title = title
+        if (title) {
+          env.frontmatter ??= {}
+          env.frontmatter.title ??= title
+        }
         return result
       }
     },