feat(ui): add configurable page widths and searchable controls

Add full-width and centered layout preferences across the app shell and workspaces.
Replace page-size selects with dropdowns and add searchable breadcrumb switching.

tests/Feature/FullWidthResourceLayoutTest.php

@@ -0,0 +1,16 @@
+<?php
+
+test('the application shell and resource workspaces use the full available width', function () {
+    $appLayout = file_get_contents(resource_path('views/layouts/app.blade.php'));
+    $applicationConfiguration = file_get_contents(resource_path('views/livewire/project/application/configuration.blade.php'));
+    $serverConfiguration = file_get_contents(resource_path('views/livewire/server/show.blade.php'));
+
+    expect($appLayout)
+        ->toContain("pageWidth === 'centered' ? 'mx-auto max-w-[1400px]' : 'max-w-none'")
+        ->and($applicationConfiguration)
+        ->not->toContain('max-w-[1180px]')
+        ->toContain('xl:gap-8')
+        ->and($serverConfiguration)
+        ->not->toContain('max-w-[1180px]')
+        ->toContain('xl:gap-8');
+});