wip: add hold-to-click on WRITE CODE button for continuous clicking

game.js

@@ -3072,6 +3072,27 @@ window.addEventListener('keydown', function (e) {
     }
 });
 
+// Hold-to-click on WRITE CODE button
+let _holdInterval = null;
+function _startHold() {
+    if (_holdInterval) return;
+    writeCode(); // immediate first click
+    _holdInterval = setInterval(writeCode, 80); // 12.5 clicks/sec while held
+}
+function _stopHold() {
+    if (_holdInterval) { clearInterval(_holdInterval); _holdInterval = null; }
+}
+window.addEventListener('DOMContentLoaded', function () {
+    const btn = document.querySelector('.main-btn');
+    if (!btn) return;
+    btn.addEventListener('mousedown', function (e) { e.preventDefault(); _startHold(); });
+    btn.addEventListener('mouseup', _stopHold);
+    btn.addEventListener('mouseleave', _stopHold);
+    btn.addEventListener('touchstart', function (e) { e.preventDefault(); _startHold(); }, { passive: false });
+    btn.addEventListener('touchend', _stopHold);
+    btn.addEventListener('touchcancel', _stopHold);
+});
+
 // Ctrl+S to save (must be on keydown to preventDefault)
 window.addEventListener('keydown', function (e) {
     if ((e.ctrlKey || e.metaKey) && e.code === 'KeyS') {