feat(ui): OS-aware search shortcuts and mobile settings titles

Show ⌘K or Ctrl+K by platform in the sidebar and command palette.
Add mobile-only section headers and descriptions on settings layouts.

tests/Feature/SidebarNavigationMarkupTest.php

@@ -33,3 +33,25 @@ it('draws a single border between the desktop sidebar and main content', functio
     expect($navbar)->toContain('border-r border-neutral-200')
         ->and($layout)->not->toContain('lg:border-l border-neutral-200');
 });
+
+it('shows section titles and descriptions above settings navigation on smaller screens', function (string $view, string $title, string $description) {
+    $layout = file_get_contents(resource_path("views/components/{$view}"));
+    $css = file_get_contents(resource_path('css/app.css'));
+
+    expect($layout)
+        ->toContain('<header class="settings-mobile-header xl:hidden">')
+        ->toContain("<h1 class=\"settings-mobile-title\">{$title}</h1>")
+        ->toContain("<p class=\"settings-mobile-description\">{$description}</p>")
+        ->toContain('<section class="application-settings-workspace w-full max-w-[1180px]">')
+        ->and($css)
+        ->toContain('.settings-mobile-title')
+        ->toContain('.settings-mobile-description')
+        ->toContain('color: #000000;')
+        ->toContain('.dark .settings-mobile-title')
+        ->toContain('color: #ffffff;');
+})->with([
+    ['notification/settings-layout.blade.php', 'Notifications', 'Configure how your team receives deployment and system alerts.'],
+    ['security/settings-layout.blade.php', 'Keys & Tokens', 'Manage SSH keys, cloud credentials, and API access tokens.'],
+    ['settings/layout.blade.php', 'Instance Settings', 'Configure global settings for this Coolify instance.'],
+    ['team/settings-layout.blade.php', 'Team', 'Manage your team, members, and access settings.'],
+]);