Inset the mini player into the split view's detail column

The floating overlay ignored the safe area, so the subscriptions channel
strip sat under it on the iPhone Duo inner screen and iPad.

Yattee/Views/Navigation/UnifiedTabView.swift

@@ -87,6 +87,9 @@ struct UnifiedTabView: View {
             sidebar
         } detail: {
             detailForSelection
+                #if os(iOS)
+                .safeAreaInset(edge: .bottom, spacing: 0) { miniPlayerInset }
+                #endif
         }
         .zoomTransitionNamespace(zoomTransition)
         #if os(iOS)
@@ -270,6 +273,28 @@ struct UnifiedTabView: View {
     }
 
     private var settingsManager: SettingsManager? { appEnvironment?.settingsManager }
+
+    #if os(iOS)
+    /// The split view has no tab bar to host the mini player as a bottom
+    /// accessory, so it takes the detail column's bottom safe area instead:
+    /// floating content such as the subscriptions channel strip and the last
+    /// rows of every list then clear it, as they clear the tab accessory.
+    private var miniPlayerInset: some View {
+        let hasActiveVideo = appEnvironment?.playerService.state.currentVideo != nil
+        let isExpanded = appEnvironment?.navigationCoordinator.isPlayerExpanded ?? false
+
+        return VStack(spacing: 0) {
+            if hasActiveVideo && !isExpanded {
+                MiniPlayerView()
+                    .padding(.horizontal, 16)
+                    .padding(.bottom, 12)
+                    // Move-only transition (no opacity) prevents a thumbnail flash during collapse
+                    .transition(.move(edge: .bottom))
+            }
+        }
+        .animation(.spring(response: 0.3), value: hasActiveVideo)
+    }
+    #endif
 }
 
 #Preview("Unified Tab View") {