iOS: reduce bottom padding in full player to occupy all space

- Reduced bottom padding from 24pt to 8pt on bottom toolbar
- Reduced spacer above toolbar from 24pt to 16pt
- Added .ignoresSafeArea(edges: .bottom) to VStack to extend to screen bottom
- Player now uses full screen height without excess bottom padding

ios/LibNovel/LibNovel/Views/Player/PlayerViews.swift

@@ -498,7 +498,7 @@ struct FullPlayerView: View {
                 .padding(.horizontal, 20)
                 .padding(.top, 32)
 
-                Spacer(minLength: 24)
+                Spacer(minLength: 16)
                 
                 // Bottom toolbar
                 HStack(spacing: 0) {
@@ -572,8 +572,9 @@ struct FullPlayerView: View {
                     .buttonStyle(.plain)
                 }
                 .padding(.horizontal, 16)
-                .padding(.bottom, 24)
+                .padding(.bottom, 8)
             }
+            .ignoresSafeArea(edges: .bottom)
         }
         .sheet(isPresented: $showingChaptersList) {
             ChaptersListSheet(