ios: Liquid Glass mini player, adjustable karaoke softness (1.0.7)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ios/Stemify/UI/RootView.swift

@@ -14,15 +14,12 @@ struct RootView: View {
                     root(t).miniPlayerRoom()
                         .navigationDestination(for: Route.self) { destination($0).miniPlayerRoom() }
                 }
-                // Floats over the screens; each screen leaves room for it so nothing ends up underneath.
-                .overlay(alignment: .bottom) {
-                    if g.playback.current != nil { MiniPlayer().transition(.move(edge: .bottom).combined(with: .opacity)) }
-                }
-                .animation(.spring(duration: 0.35), value: g.playback.current != nil)
+                .modifier(FloatingMiniPlayer())
                 .tabItem { Label(t.rawValue, systemImage: t.icon) }
                 .tag(t)
             }
         }
+        .modifier(GlassMiniPlayerHost())
         .sheet(isPresented: Binding(get: { ui.nowPlayingOpen }, set: { ui.nowPlayingOpen = $0 })) {
             NowPlayingScreen()
                 .overlayHost(ui.overlays, level: 1)
@@ -72,11 +69,43 @@ struct RootView: View {
     }
 }
 
+/// iOS 26.1 and up put the mini player in the tab bar's glass accessory; older ones float a card over each tab.
+private let glassAccessory: Bool = { if #available(iOS 26.1, *) { return true } else { return false } }()
+
+private struct GlassMiniPlayerHost: ViewModifier {
+    private var g: AppGraph { .shared }
+    func body(content: Content) -> some View {
+        if #available(iOS 26.1, *) {
+            content
+                .tabViewBottomAccessory(isEnabled: g.playback.current != nil) { MiniPlayer() }
+                .tabBarMinimizeBehavior(.onScrollDown)
+        } else {
+            content
+        }
+    }
+}
+
+/// Floats over the screens; each screen leaves room for it so nothing ends up underneath.
+private struct FloatingMiniPlayer: ViewModifier {
+    private var g: AppGraph { .shared }
+    func body(content: Content) -> some View {
+        if glassAccessory {
+            content
+        } else {
+            content
+                .overlay(alignment: .bottom) {
+                    if g.playback.current != nil { MiniPlayer().transition(.move(edge: .bottom).combined(with: .opacity)) }
+                }
+                .animation(.spring(duration: 0.35), value: g.playback.current != nil)
+        }
+    }
+}
+
 private struct MiniPlayerRoom: ViewModifier {
     private var g: AppGraph { .shared }
     func body(content: Content) -> some View {
         content.safeAreaInset(edge: .bottom, spacing: 0) {
-            if g.playback.current != nil { Color.clear.frame(height: 66) }
+            if !glassAccessory && g.playback.current != nil { Color.clear.frame(height: 66) }
         }
     }
 }