feat: add Buy Me a Coffee button in app + README badge

README.md

@@ -41,6 +41,7 @@ short_description: Retro iPod audio player — playlist, drag & drop, browser
 [![HF Space](https://img.shields.io/badge/🤗%20Space-Retro--Player-pink)](https://huggingface.co/spaces/ArtelTaleb/retro-player)
 [![License: MIT](https://img.shields.io/badge/License-MIT-green.svg)](https://opensource.org/licenses/MIT)
 [![Vanilla JS](https://img.shields.io/badge/Vanilla-JS-yellow)](https://developer.mozilla.org/en-US/docs/Web/JavaScript)
+[![Buy Me A Coffee](https://img.shields.io/badge/Buy%20Me%20A%20Coffee-☕-yellow)](https://buymeacoffee.com/artel3d)
 
 ---
 

index.html

@@ -452,6 +452,7 @@
         <span class="footer-btn" id="btn-menu" onclick="toggleShuffle()">MENU</span>
         <span id="footer-count">0 / 0</span>
         <span class="footer-btn" onclick="document.getElementById('file-input').click()">+ADD</span>
+        <a class="footer-btn" href="https://buymeacoffee.com/artel3d" target="_blank" rel="noopener" title="Buy me a coffee">☕</a>
       </div>
 
     </div>