Rename Brain and AI to Instruction and write BAWANA in capitals

The page now lives at /instruction; /brain and /perintah redirect there.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/pages/Schedule.tsx

@@ -58,7 +58,7 @@ export function SchedulePage() {
   return (
     <>
       <PageHead title={t('sch.title')} description={t('sch.description')}
-        actions={<Link className="btn primary" to="/brain"><Icon name="plus" />{t('sch.newInstruction')}</Link>} />
+        actions={<Link className="btn primary" to="/instruction"><Icon name="plus" />{t('sch.newInstruction')}</Link>} />
       {mixed && (
         <div className="result-tabs" role="tablist">
           <button role="tab" aria-selected={scope === 'mine'} className={scope === 'mine' ? 'active' : undefined} onClick={() => choose('mine')}>