fix: push NowPlaying cover and controls down by 28dp

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

android/app/src/main/kotlin/com/novasonic/app/ui/screen/NowPlayingScreen.kt

@@ -164,6 +164,8 @@ fun NowPlayingScreen(
             if (tab == NpTab.PLAYER) {
                 var dragX by remember { mutableStateOf(0f) }
 
+                Spacer(Modifier.height(28.dp))
+
                 // Cover art — full content width, scale-animates like Apple Music
                 AsyncImage(
                     model = coverUrl,