feat(ui): numpad, audio readout, and sequence beat controls

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

src/static/help.js

@@ -131,7 +131,7 @@ document.addEventListener('DOMContentLoaded', () => {
         return;
       }
       try {
-        const response = await fetch('/settings/settings', {
+        const response = await fetch('/settings', {
           method: 'PUT',
           headers: { 'Content-Type': 'application/json' },
           body: JSON.stringify({