Show updates-available banner in Installed view

src/ui/library_view.rs

@@ -45,6 +45,7 @@ pub struct LibraryView {
     list_button: gtk::ToggleButton,
     records: Rc<RefCell<Vec<AppImageRecord>>>,
     search_empty_page: adw::StatusPage,
+    update_banner: adw::Banner,
     // Batch selection
     selection_mode: Rc<Cell<bool>>,
     selected_ids: Rc<RefCell<HashSet<i64>>>,
@@ -338,10 +339,19 @@ impl LibraryView {
         delete_btn.set_action_name(Some("win.batch-delete"));
         action_bar.pack_end(&delete_btn);
 
+        // --- Updates-available banner ---
+        let update_banner = adw::Banner::builder()
+            .title(&i18n("Updates available"))
+            .button_label(&i18n("View Updates"))
+            .revealed(false)
+            .build();
+        update_banner.set_action_name(Some("win.show-updates"));
+
         // --- Assemble toolbar view ---
         let content_box = gtk::Box::builder()
             .orientation(gtk::Orientation::Vertical)
             .build();
+        content_box.append(&update_banner);
         content_box.append(&search_bar);
         content_box.append(&stack);
         content_box.append(&action_bar);
@@ -514,6 +524,7 @@ impl LibraryView {
             list_button,
             records,
             search_empty_page,
+            update_banner,
             selection_mode,
             selected_ids,
             _action_bar: action_bar,
@@ -751,6 +762,20 @@ impl LibraryView {
         }
     }
 
+    /// Update the "updates available" banner.
+    pub fn set_update_count(&self, count: i64) {
+        self.update_banner.set_revealed(count > 0);
+        if count > 0 {
+            let text = ni18n_f(
+                "{} update available",
+                "{} updates available",
+                count as u32,
+                &[("{}", &count.to_string())],
+            );
+            self.update_banner.set_title(&text);
+        }
+    }
+
     /// Programmatically set the view mode by toggling the linked buttons.
     pub fn set_view_mode(&self, mode: ViewMode) {
         match mode {

src/window.rs

@@ -1374,6 +1374,10 @@ impl DriftwoodWindow {
                 page.set_needs_attention(count > 0);
             }
         }
+        // Also update the banner in the Installed view
+        if let Some(library_view) = self.imp().library_view.get() {
+            library_view.set_update_count(count);
+        }
     }
 
     fn start_file_watcher(&self) {