feat: dodano pasek postępu odtwarzania w czasie rzeczywistym w panelu webowym

static/index.html

@@ -90,6 +90,15 @@
                         </a>
                     </div>
 
+                    <!-- Track Progress Bar -->
+                    <div class="track-progress-container" id="progress-container" style="display: none;">
+                        <span class="time-text" id="time-elapsed">0:00</span>
+                        <div class="progress-bar-bg" id="progress-bar-bg">
+                            <div class="progress-bar-fill" id="progress-bar-fill" style="width: 0%;"></div>
+                        </div>
+                        <span class="time-text" id="time-total">0:00</span>
+                    </div>
+
                     <!-- Progress / State (Simple status text) -->
                     <div class="playback-state-bar">
                         <span class="badge" id="loop-badge"><i data-lucide="repeat-1"></i> Zapętlenie aktywne</span>