feat(gui): one main menu, on the sidebar's account row

The sidebar header had a hamburger beside the brand, and the account row
in the footer had its own ⋮ menu; both offered Preferences. The header
button sat next to the page's own tools and read as one of them.

The account row is now the main menu's button, as in Proton's own apps:
Preferences, Keyboard Shortcuts and About, then Sign Out. The whole row
opens it, upwards, and F10 still does as the primary menu.

crates/pdfs-gui/src/app/main.rs

@@ -831,7 +831,6 @@ fn build_sidebar(footer: &gtk4::Box) -> (adw::NavigationPage, gtk4::ListBox) {
 
     let header = adw::HeaderBar::new();
     header.set_title_widget(Some(&brand));
-    header.pack_end(&build_primary_menu());
 
     let scroll = gtk4::ScrolledWindow::builder()
         .hscrollbar_policy(gtk4::PolicyType::Never)
@@ -1154,25 +1153,7 @@ fn toast_failure(ui: &Rc<Ui>, what: &str, message: &str, kind: ErrorKind) {
     }
 }
 
-/// The sidebar's primary (hamburger) menu: the app-level entries that don't
-/// belong on any one page.
-fn build_primary_menu() -> gtk4::MenuButton {
-    let menu = gio::Menu::new();
-    menu.append(Some(&gettext("Preferences")), Some("win.preferences"));
-    menu.append(Some(&gettext("Keyboard Shortcuts")), Some("win.shortcuts"));
-    menu.append(
-        Some(&gettext("About Proton Drive for Linux")),
-        Some("win.about"),
-    );
-    gtk4::MenuButton::builder()
-        .icon_name("pdfs-menu-symbolic")
-        .tooltip_text(gettext("Main menu"))
-        .primary(true)
-        .menu_model(&menu)
-        .build()
-}
-
-/// Back the primary and account menus' entries with window actions.
+/// Back the main menu's entries with window actions.
 fn install_window_actions(ui: &Rc<Ui>, window: &adw::ApplicationWindow) {
     let preferences = gio::SimpleAction::new("preferences", None);
     let ui_prefs = ui.clone();

crates/pdfs-gui/src/app/pages/status.rs

@@ -381,23 +381,34 @@ pub(crate) fn build_main_page() -> MainWidgets {
         .hexpand(true)
         .ellipsize(gtk4::pango::EllipsizeMode::Middle)
         .build();
+    // The app's one menu, on the account row the way Proton's own apps keep it:
+    // app-wide entries first, the account's last. The whole row opens it, and
+    // F10 too, as the primary menu.
+    let app_section = gio::Menu::new();
+    app_section.append(Some(&gettext("Preferences")), Some("win.preferences"));
+    app_section.append(Some(&gettext("Keyboard Shortcuts")), Some("win.shortcuts"));
+    app_section.append(
+        Some(&gettext("About Proton Drive for Linux")),
+        Some("win.about"),
+    );
+    let account_section = gio::Menu::new();
+    account_section.append(Some(&gettext("Sign Out…")), Some("win.sign-out"));
     let account_menu = gio::Menu::new();
-    account_menu.append(Some(&gettext("Preferences")), Some("win.preferences"));
-    let sign_out = gio::Menu::new();
-    sign_out.append(Some(&gettext("Sign Out…")), Some("win.sign-out"));
-    account_menu.append_section(None, &sign_out);
-    let account_button = gtk4::MenuButton::builder()
-        .icon_name("view-more-symbolic")
-        .tooltip_text(gettext("Account"))
+    account_menu.append_section(None, &app_section);
+    account_menu.append_section(None, &account_section);
+    let row = gtk4::Box::new(gtk4::Orientation::Horizontal, 10);
+    row.append(&avatar);
+    row.append(&account_name);
+    row.append(&gtk4::Image::from_icon_name("view-more-symbolic"));
+    let account = gtk4::MenuButton::builder()
+        .child(&row)
+        .tooltip_text(gettext("Main menu"))
         .menu_model(&account_menu)
-        .valign(gtk4::Align::Center)
+        .direction(gtk4::ArrowType::Up)
+        .primary(true)
         .build();
-    account_button.add_css_class("flat");
-    let account = gtk4::Box::new(gtk4::Orientation::Horizontal, 10);
+    account.add_css_class("flat");
     account.add_css_class("sidebar-account");
-    account.append(&avatar);
-    account.append(&account_name);
-    account.append(&account_button);
 
     let footer = gtk4::Box::new(gtk4::Orientation::Vertical, 10);
     footer.add_css_class("sidebar-footer");