Update templates/index.html

templates/index.html

@@ -16,7 +16,8 @@
         </div>
         <div class="info-panel">
             <h3>Position Info</h3>
-            <div id="fen"></div>
+            <input type="text" id="fen" style="width: 100%; padding: 8px; font-family: monospace; background: #f0f0f0;">
+            <button onclick="let f=document.getElementById('fen').value.trim(); if(f) { board.position(f.split(' ')[0]); updateInfo(); }">Load FEN</button>
         </div>
     </div>
     <div id="results"></div>