Show toolbar buttons and tab picker during channel loading

Display the view options button, channel menu, and content type tabs
immediately when the cached header is shown, instead of waiting for
the full channel data to load. The spinner now appears only in the
content area below the tabs.

Yattee/Views/Channel/ChannelView.swift

@@ -381,10 +381,17 @@ struct ChannelView: View {
                     header(name: cached.name, thumbnailURL: cached.thumbnailURL, bannerURL: cached.bannerURL)
                         .id("channelTop")
 
-                    // Centered spinner for content area
+                    // Show tab picker during loading (doesn't depend on channel)
+                    if supportsChannelTabs {
+                        contentTypePicker
+                            .padding(.horizontal)
+                            .padding(.vertical, 8)
+                    }
+
+                    // Centered spinner for content area below tabs
                     ProgressView()
                         .frame(maxWidth: .infinity)
-                        .padding(.top, 60)
+                        .padding(.top, 40)
                 }
             }
             .onChange(of: geometry.size.width, initial: true) { _, newWidth in
@@ -418,11 +425,56 @@ struct ChannelView: View {
                 }
                 .opacity(collapsedTitleOpacity)
             }
+
+            ToolbarItem(placement: .primaryAction) {
+                Button {
+                    showViewOptions = true
+                } label: {
+                    Label(String(localized: "viewOptions.title"), systemImage: "slider.horizontal.3")
+                }
+                .liquidGlassTransitionSource(id: "channelViewOptions", in: sheetTransition)
+            }
+
+            #if !os(tvOS)
+            if #available(iOS 26, macOS 26, *) {
+                ToolbarSpacer(.fixed, placement: .primaryAction)
+            }
+            #endif
+
+            ToolbarItem(placement: .primaryAction) {
+                channelMenu
+            }
         }
+        .sheet(isPresented: $showViewOptions) {
+            ViewOptionsSheet(
+                layout: $layout,
+                rowStyle: $rowStyle,
+                gridColumns: $gridColumns,
+                hideWatched: $hideWatched,
+                maxGridColumns: gridConfig.maxColumns
+            )
+            .liquidGlassSheetContent(sourceID: "channelViewOptions", in: sheetTransition)
+        }
+        #if os(iOS)
+        .toolbarBackground(collapseProgress > 0.8 ? .visible : .hidden, for: .navigationBar)
+        .navigationBarTitleDisplayMode(.inline)
+        #endif
         .modifier(ChannelScrollOffsetModifier(
             scrollOffset: $scrollOffset,
             isPlayerExpanded: appEnvironment?.navigationCoordinator.isPlayerExpanded ?? false
         ))
+        .confirmationDialog(
+            String(localized: "channel.unsubscribe.confirmation.title"),
+            isPresented: $showingUnsubscribeConfirmation,
+            titleVisibility: .visible
+        ) {
+            Button(String(localized: "channel.unsubscribe.confirmation.action"), role: .destructive) {
+                unsubscribe()
+            }
+            Button(String(localized: "common.cancel"), role: .cancel) {}
+        } message: {
+            Text(String(localized: "channel.unsubscribe.confirmation.message"))
+        }
     }
 
     // MARK: - Header