@* IsFixed="true": the StreamingAudioPlayerService instance is created once in OnInitialized
   and is never replaced — the reference is stable for the lifetime of the component.
   If instance swapping at runtime is ever needed, change IsFixed to false (adds subscription
   overhead on every parent re-render, but allows children to see the new reference). *@
<CascadingValue Value="@(_audioPlayerService)" IsFixed="true">
    <CascadingValue Value="@(_queueService)" IsFixed="true">
        @ChildContent
    </CascadingValue>
</CascadingValue>