Raise host bio character limit from 600 to 4000; v2.0.24

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

server/helpers.js

@@ -339,7 +339,7 @@ function sanitizeNuggets(raw) {
           id: h.id.trim(),
           name: typeof h.name === 'string' ? h.name.trim().slice(0, 120) : '',
           role: typeof h.role === 'string' ? h.role.trim().slice(0, 120) : '',
-          bio: typeof h.bio === 'string' ? h.bio.trim().slice(0, 600) : '',
+          bio: typeof h.bio === 'string' ? h.bio.trim().slice(0, 4000) : '',
           imageUrl: sanitizeUrl(h.imageUrl) || '',
           archived: Boolean(h.archived),
         }))