CARA GANTI FAVICON
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1. Siapkan file: favicon.ico, favicon-32.png, apple-touch-icon.png
2. Taruh di folder ini: public/img/
3. Buka views/layouts/header.php dan auth/login.php
4. Ganti baris <link rel="icon" type="image/svg+xml" href="data:...">
   Dengan:
   <link rel="icon" href="<?= APP_URL ?>/public/img/favicon.ico">
   <link rel="icon" type="image/png" sizes="32x32" href="<?= APP_URL ?>/public/img/favicon-32.png">
   <link rel="apple-touch-icon" href="<?= APP_URL ?>/public/img/apple-touch-icon.png">

Tool gratis: https://favicon.io  atau  https://realfavicongenerator.net
