feat: zmiana ikony play/pause w dashboardzie zależnie od stanu odtwarzania

static/app.js

@@ -358,12 +358,14 @@ function updateUI(status) {
     }
     
     // 3. Play/Pause Button State
-    if (status.playing) {
-        playPauseIcon.setAttribute('data-lucide', 'pause');
-        btnPlayPause.title = "Wstrzymaj";
-    } else {
-        playPauseIcon.setAttribute('data-lucide', 'play');
-        btnPlayPause.title = "Odtwarzaj";
+    const targetIcon = status.playing ? 'pause' : 'play';
+    if (btnPlayPause.dataset.state !== targetIcon) {
+        btnPlayPause.dataset.state = targetIcon;
+        btnPlayPause.innerHTML = `<i data-lucide="${targetIcon}"></i>`;
+        btnPlayPause.title = status.playing ? "Wstrzymaj" : "Odtwarzaj";
+        if (window.lucide) {
+            lucide.createIcons();
+        }
     }
     
     // 4. Volume State