feat: speed controls in collapsed tab bar via safeAreaBar

Uses .safeAreaBar(edge: .bottom) on the Reader content — the iOS 26
API that places content in the collapsed tab bar area, same position
as the Now Playing mini bar. Speed controls [ - ] 1.50x [ + ] appear
in the glass bar when auto-scrolling.

Removed the floating speed pill overlay from ContentView.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ios/Platform/Platform/ContentView.swift

@@ -73,53 +73,18 @@ struct MainTabView: View {
             .tint(Color.accentWarm)
             .tabBarMinimizeBehavior(.onScrollDown)
 
-            // Bottom floating controls
-            VStack(spacing: 10) {
-                Spacer()
-
-                // Speed pill (only when auto-scrolling on Reader)
-                if isAutoScrolling && selectedTab == 2 {
-                    HStack(spacing: 12) {
-                        Button {
-                            scrollSpeed = max(0.25, scrollSpeed - 0.25)
-                        } label: {
-                            Image(systemName: "minus")
-                                .font(.caption.weight(.bold))
-                                .foregroundStyle(Color.accentWarm)
-                                .frame(width: 32, height: 32)
-                        }
-
-                        Text(String(format: "%.2fx", scrollSpeed))
-                            .font(.system(size: 13, weight: .bold, design: .monospaced))
-                            .foregroundStyle(Color.textPrimary)
-
-                        Button {
-                            scrollSpeed = min(3.0, scrollSpeed + 0.25)
-                        } label: {
-                            Image(systemName: "plus")
-                                .font(.caption.weight(.bold))
-                                .foregroundStyle(Color.accentWarm)
-                                .frame(width: 32, height: 32)
-                        }
-                    }
-                    .padding(.horizontal, 16)
-                    .padding(.vertical, 10)
-                    .background(.regularMaterial, in: Capsule())
-                    .shadow(color: .black.opacity(0.15), radius: 12, y: 4)
-                    .transition(.move(edge: .bottom).combined(with: .opacity))
-                }
-
             // Feedback button (not on Reader)
             if selectedTab != 2 {
+                VStack {
+                    Spacer()
                     HStack {
                         FeedbackButton()
                             .padding(.leading, 20)
                         Spacer()
                     }
-                }
-            }
                     .padding(.bottom, 70)
-            .animation(.spring(duration: 0.3), value: isAutoScrolling)
+                }
+            }
         }
         .confettiCannon(
             trigger: $confettiTrigger,

ios/Platform/Platform/Features/Reader/Views/ReaderTabView.swift

@@ -140,6 +140,32 @@ struct ReaderTabView: View {
             .frame(maxWidth: .infinity, maxHeight: .infinity)
             .background(Color.canvas)
             .navigationBarHidden(true)
+            .safeAreaBar(edge: .bottom) {
+                if isAutoScrolling {
+                    HStack(spacing: 16) {
+                        Button {
+                            scrollSpeed = max(0.25, scrollSpeed - 0.25)
+                        } label: {
+                            Image(systemName: "minus")
+                                .font(.caption.weight(.bold))
+                                .foregroundStyle(Color.accentWarm)
+                        }
+
+                        Text(String(format: "%.2fx", scrollSpeed))
+                            .font(.system(size: 13, weight: .bold, design: .monospaced))
+                            .foregroundStyle(Color.textPrimary)
+
+                        Button {
+                            scrollSpeed = min(3.0, scrollSpeed + 0.25)
+                        } label: {
+                            Image(systemName: "plus")
+                                .font(.caption.weight(.bold))
+                                .foregroundStyle(Color.accentWarm)
+                        }
+                    }
+                    .padding(.horizontal, 20)
+                }
+            }
             .sheet(isPresented: $showFeedSheet) {
                 AddFeedSheet(vm: vm)
             }