Marks/Views/BookmarksView.swift

@@ -122,6 +122,7 @@ struct BookmarksView: View {
                     } label: {
                         Image(systemName: "sparkles")
                     }
+                    .accessibilityLabel("AI actions")
                 }
                 ToolbarItem(placement: .topBarTrailing) {
                     HStack(spacing: 16) {
@@ -138,6 +139,7 @@ struct BookmarksView: View {
                         Button { showAddBookmark = true } label: {
                             Image(systemName: "plus")
                         }
+                        .accessibilityLabel("Add bookmark")
                         Button {
                             Task { await viewModel.toggleUnreadFilter() }
                         } label: {
@@ -146,9 +148,11 @@ struct BookmarksView: View {
                                   : "line.3.horizontal.decrease.circle")
                                 .contentTransition(.symbolEffect(.replace))
                         }
+                        .accessibilityLabel("Unread filter")
                         Button { showSettings = true } label: {
                             Image(systemName: "gearshape")
                         }
+                        .accessibilityLabel("Settings")
                     }
                 }
             }

Marks/Views/Library/LibraryKit.swift

@@ -131,13 +131,18 @@ enum PaperType {
 
 extension View {
     /// Puts a screen on the paper ground: clears the system list/scroll
-    /// background so the sheet shows through, and tints the bar to match so a
+    /// background so the sheet shows through, and lets the paper reach past the
-    /// large title doesn't sit on a white strip above the content.
+    /// safe area so the bar sits on it.
+    ///
+    /// Deliberately no `.toolbarBackground` — setting it makes SwiftUI build a
+    /// fresh UINavigationBarAppearance and throw away the one PaperAppearance
+    /// installed, which silently reverted these screens' titles to the system
+    /// bold sans. The bar is transparent by appearance, so the background
+    /// below is all it needs.
     func paperSurface() -> some View {
         self
             .scrollContentBackground(.hidden)
             .background(Paper.sheet.ignoresSafeArea())
-            .toolbarBackground(Paper.sheet, for: .navigationBar)
     }
 
     /// Editable text. Monospaced, because in this design anything you type is