update os logic

public/javascript/os.js

@@ -378,6 +378,7 @@ function applyMaximized(win) {
 
   win.classList.add('max');
   win.dataset.state = 'maximized';
+
 }
 
 
@@ -600,16 +601,18 @@ function wireWindowControls(win, taskbarBtn = null) {
   if (taskbarBtn !== null) {
     titlebar.addEventListener('dblclick', (evt) => {
       toggleMaximize();
+      titlebar.querySelector('.maximize').innerHTML = win.dataset.state === 'maximized' ? '🗗' : '▢';
       saveOpenWindows()
     });
   }
+  
 
   titlebar.addEventListener('touchend', (ev) => {
     const current = Date.now();
     const delta = current - lastTap;
-
     if (delta < 300 && delta > 0) {
       // Double tap → maximize / restore
+      titlebar.querySelector('.maximize').innerHTML = win.dataset.state === 'maximized' ? '🗗' : '▢';
       toggleMaximize();
     }
     lastTap = current;
@@ -668,7 +671,7 @@ function destroyWindow(win) {
       // 🔥 VOR dem Maximieren speichern
       storeNormalGeometry(win);
 
-applyMaximized(win);
+    applyMaximized(win);
     } else {
       const prev = JSON.parse(win.dataset.normalGeometry || '{}');
 
@@ -838,6 +841,7 @@ function makeDraggableWithSnap(win) {
     } else if (ev.clientY <= snapThreshold) {
       // Snap top (maximize)
       applySnap(win, 'top');
+      win.querySelector('.maximize').innerHTML = '🗗';
       snapped = 'top';
     } else if (snapped && ev.clientX > snapThreshold * 2 && ev.clientX < screenW - snapThreshold * 2) {
       // Wegziehen vom Rand → Restore
@@ -865,6 +869,7 @@ function makeDraggableWithSnap(win) {
     }
 
     win.classList.add('max');
+    
 
     if (side === 'left') {
       win.style.left = '0';
@@ -908,6 +913,8 @@ function makeDraggableWithSnap(win) {
     win.style.height = height + 'px';
 
     win.classList.remove('max');
+    win.querySelector('.maximize').innerHTML = '▢';
+
     win.dataset.state = 'normal';
     win.dataset.snapped = '';
   }