feat: profile bio

lib/social.ts

@@ -182,6 +182,9 @@ export type PublicProfile = {
   handle: string;
   name: string;
   avatar_url: string | null;
+  /** Short self-introduction (≤200 chars), plain text with `@handle`
+   *  mentions linkified at render time. null when unset. */
+  bio: string | null;
   joined_at: string;
   /** ISO-3166-1 alpha-2 account country, or null when unknown. */
   country: string | null;