Streaming Seek Support

DeepDrftWeb.Client/Controls/AudioPlayerBar/AudioPlayerBar.razor

@@ -42,7 +42,7 @@ else
                                    Step="0.1"
                                    Value="@CurrentTime"
                                    ValueChanged="@OnSeek"
-                                   Disabled="@(!IsLoaded || IsStreamingMode)"/>
+                                   Disabled="@(!CanSeek)"/>
                     </div>
                     
                     <div class="volume-right">
@@ -77,7 +77,7 @@ else
                                Step="0.1"
                                Value="@CurrentTime"
                                ValueChanged="@OnSeek"
-                               Disabled="@(!IsLoaded || IsStreamingMode)"/>
+                               Disabled="@(!CanSeek)"/>
                 </div>
                 
                     @* Control Buttons - positioned absolutely like original *@

DeepDrftWeb.Client/Controls/AudioPlayerBar/AudioPlayerBar.razor.cs

@@ -22,6 +22,12 @@ public partial class AudioPlayerBar : ComponentBase
     private double LoadProgress => PlayerService.LoadProgress;
     private string? ErrorMessage => PlayerService.ErrorMessage;
 
+    /// <summary>
+    /// Seek is enabled once track is loaded AND duration is known (from WAV header).
+    /// This allows seeking even during streaming, including seeking beyond buffered content.
+    /// </summary>
+    private bool CanSeek => IsLoaded && Duration.HasValue && Duration.Value > 0;
+
     protected override async Task OnInitializedAsync()
     {
         await base.OnInitializedAsync();