refactor: channel, contact, room detail sheets

MC1/Extensions/View+ScrollRevealTitle.swift

@@ -0,0 +1,44 @@
+import SwiftUI
+
+extension View {
+  /// Leaves the navigation bar title empty while the header is on screen, then fades
+  /// in `title` (the entity name) once the user scrolls past `revealAfter` points.
+  /// Pass the header's measured height (see `scrollRevealHeaderHeight`) so the reveal
+  /// tracks the real header size and adapts to Dynamic Type.
+  /// Pairs with `.navigationBarTitleDisplayMode(.inline)`.
+  func scrollRevealNavigationTitle(_ title: String, revealAfter: CGFloat = 150) -> some View {
+    modifier(ScrollRevealNavigationTitle(title: title, revealAfter: revealAfter))
+  }
+
+  /// Reports the measured height of the scroll-reveal header into `height`, so the
+  /// title reveals based on the header's real (Dynamic Type-aware) size rather than a
+  /// fixed threshold. Attach to the header content, then feed `height` to
+  /// `scrollRevealNavigationTitle(_:revealAfter:)`.
+  func scrollRevealHeaderHeight(into height: Binding<CGFloat>) -> some View {
+    onGeometryChange(for: CGFloat.self) { $0.size.height } action: { height.wrappedValue = $0 }
+  }
+}
+
+private struct ScrollRevealNavigationTitle: ViewModifier {
+  let title: String
+  let revealAfter: CGFloat
+
+  @State private var isRevealed = false
+
+  func body(content: Content) -> some View {
+    content
+      .onScrollGeometryChange(for: Bool.self) { geometry in
+        geometry.contentOffset.y > revealAfter
+      } action: { _, revealed in
+        guard revealed != isRevealed else { return }
+        withAnimation(.easeInOut(duration: 0.2)) { isRevealed = revealed }
+      }
+      .toolbar {
+        ToolbarItem(placement: .principal) {
+          Text(title)
+            .font(.headline)
+            .opacity(isRevealed ? 1 : 0)
+        }
+      }
+  }
+}

MC1/Views/Chats/Room/RoomInfoSheet.swift

@@ -16,6 +16,7 @@ struct RoomInfoSheet: View {
   @State private var favoriteTask: Task<Void, Never>?
   @State private var showTelemetry = false
   @State private var showSettings = false
+  @State private var headerHeight: CGFloat = 150
 
   init(session: RemoteNodeSessionDTO) {
     self.session = session
@@ -27,17 +28,27 @@ struct RoomInfoSheet: View {
     NavigationStack {
       List {
         Section {
-          HStack {
-            Spacer()
-            NodeAvatar(publicKey: session.publicKey, role: .roomServer, size: 80)
-            Spacer()
+          VStack(spacing: 12) {
+            NodeAvatar(publicKey: session.publicKey, role: .roomServer, size: 150)
+
+            VStack(spacing: 4) {
+              Text(session.name)
+                .font(.title2)
+                .bold()
+
+              Text(L10n.RemoteNodes.RemoteNodes.Auth.typeRoom)
+                .font(.subheadline)
+                .foregroundStyle(.secondary)
+            }
           }
+          .frame(maxWidth: .infinity)
+          .scrollRevealHeaderHeight(into: $headerHeight)
           .listRowBackground(Color.clear)
         }
 
         ConversationQuickActionsSection(
-          notificationLevel: $notificationLevel,
           isFavorite: $isFavorite,
+          notificationLevel: $notificationLevel,
           availableLevels: NotificationLevel.roomLevels
         )
         .onChange(of: notificationLevel) { _, newValue in
@@ -102,10 +113,11 @@ struct RoomInfoSheet: View {
         .themedRowBackground(theme)
       }
       .themedCanvas(theme)
-      .navigationTitle(Strings.infoTitle)
       .navigationBarTitleDisplayMode(.inline)
+      .scrollRevealNavigationTitle(session.name, revealAfter: headerHeight)
+      .contentMargins(.top, 0, for: .scrollContent)
       .toolbar {
-        ToolbarItem(placement: .cancellationAction) {
+        ToolbarItem(placement: .confirmationAction) {
           Button(L10n.Localizable.Common.done) { dismiss() }
         }
       }

MC1/Views/Chats/Sheets/ChannelInfoSheet.swift

@@ -34,6 +34,7 @@ struct ChannelInfoSheet: View {
   @State private var discoveredNewRegions: [String] = []
   @State private var showingDiscoveryResults = false
   @State private var selectedFloodScope: ChannelFloodScope
+  @State private var headerHeight: CGFloat = 150
 
   init(channel: ChannelDTO, onClearMessages: @escaping () -> Void, onDelete: @escaping () -> Void) {
     self.channel = channel
@@ -48,12 +49,12 @@ struct ChannelInfoSheet: View {
     NavigationStack {
       Form {
         // Channel Header Section
-        ChannelInfoHeaderSection(channel: channel)
+        ChannelInfoHeaderSection(channel: channel, measuredHeight: $headerHeight)
 
         // Quick Actions Section
         ConversationQuickActionsSection(
-          notificationLevel: $notificationLevel,
           isFavorite: $isFavorite,
+          notificationLevel: $notificationLevel,
           availableLevels: NotificationLevel.channelLevels
         )
         .onChange(of: notificationLevel) { _, newValue in
@@ -123,10 +124,11 @@ struct ChannelInfoSheet: View {
         )
       }
       .themedCanvas(theme)
-      .navigationTitle(L10n.Chats.Chats.ChannelInfo.title)
       .navigationBarTitleDisplayMode(.inline)
+      .scrollRevealNavigationTitle(channel.displayName, revealAfter: headerHeight)
+      .contentMargins(.top, 0, for: .scrollContent)
       .toolbar {
-        ToolbarItem(placement: .cancellationAction) {
+        ToolbarItem(placement: .confirmationAction) {
           Button(L10n.Chats.Chats.Common.done) {
             dismiss()
           }
@@ -354,6 +356,7 @@ struct ChannelInfoSheet: View {
 
 private struct ChannelInfoHeaderSection: View {
   let channel: ChannelDTO
+  @Binding var measuredHeight: CGFloat
 
   private var channelTypeLabel: String {
     if channel.isPublicChannel {
@@ -367,11 +370,10 @@ private struct ChannelInfoHeaderSection: View {
 
   var body: some View {
     Section {
-      HStack {
-        Spacer()
-        VStack(spacing: 12) {
-          ChannelAvatar(channel: channel, size: 80)
+      VStack(spacing: 12) {
+        ChannelAvatar(channel: channel, size: 150)
 
+        VStack(spacing: 4) {
           Text(channel.displayName)
             .font(.title2)
             .bold()
@@ -380,8 +382,9 @@ private struct ChannelInfoHeaderSection: View {
             .font(.subheadline)
             .foregroundStyle(.secondary)
         }
-        Spacer()
       }
+      .frame(maxWidth: .infinity)
+      .scrollRevealHeaderHeight(into: $measuredHeight)
       .listRowBackground(Color.clear)
     }
   }
@@ -487,33 +490,28 @@ private struct ChannelInfoActionsSection: View {
 
   var body: some View {
     Section {
-      Button {
+      Button(role: .destructive) {
         showingClearMessagesConfirmation = true
       } label: {
         HStack {
-          Spacer()
+          Label(L10n.Chats.Chats.ChannelInfo.clearMessagesButton, systemImage: "xmark.circle")
           if isClearingMessages {
+            Spacer()
             ProgressView()
-          } else {
-            Label(L10n.Chats.Chats.ChannelInfo.clearMessagesButton, systemImage: "xmark.circle")
           }
-          Spacer()
         }
       }
       .disabled(isActionInProgress)
-      .alignmentGuide(.listRowSeparatorLeading) { _ in 0 }
 
       Button(role: .destructive) {
         showingDeleteConfirmation = true
       } label: {
         HStack {
-          Spacer()
+          Label(L10n.Chats.Chats.ChannelInfo.deleteButton, systemImage: "trash")
           if isDeleting {
+            Spacer()
             ProgressView()
-          } else {
-            Label(L10n.Chats.Chats.ChannelInfo.deleteButton, systemImage: "trash")
           }
-          Spacer()
         }
       }
       .disabled(isActionInProgress)

MC1/Views/Components/ConversationQuickActionsSection.swift

@@ -3,28 +3,28 @@ import SwiftUI
 
 struct ConversationQuickActionsSection: View {
   @Environment(\.appTheme) private var theme
-  @Binding var notificationLevel: NotificationLevel
   @Binding var isFavorite: Bool
+  @Binding var notificationLevel: NotificationLevel
   let availableLevels: [NotificationLevel]
 
   init(
-    notificationLevel: Binding<NotificationLevel>,
     isFavorite: Binding<Bool>,
+    notificationLevel: Binding<NotificationLevel>,
     availableLevels: [NotificationLevel] = NotificationLevel.allCases
   ) {
-    _notificationLevel = notificationLevel
     _isFavorite = isFavorite
+    _notificationLevel = notificationLevel
     self.availableLevels = availableLevels
   }
 
   var body: some View {
     Section {
-      VStack(spacing: 16) {
-        NotificationLevelPicker(selection: $notificationLevel, availableLevels: availableLevels)
+      NotificationLevelPicker(selection: $notificationLevel, availableLevels: availableLevels)
+        .listRowInsets(EdgeInsets(top: 12, leading: 16, bottom: 12, trailing: 16))
 
-        FavoriteToggleRow(isFavorite: $isFavorite)
+      Toggle(isOn: $isFavorite) {
+        Label(L10n.Chats.Chats.Action.favorite, systemImage: "star")
       }
-      .listRowInsets(EdgeInsets(top: 12, leading: 16, bottom: 12, trailing: 16))
     }
     .themedRowBackground(theme)
   }