feat(project): add icons and improve persistent volume management

Add project icon storage and serving with local/S3 support, prevent deletion of compose-managed volumes, and optimize volume backups. Refine project and backup UI components with consistent styling and coverage.

tests/Feature/ProjectNewSelectAccentTest.php

@@ -0,0 +1,9 @@
+<?php
+
+it('uses the Coollabs gradient button treatment for deploy actions', function () {
+    $view = file_get_contents(resource_path('views/livewire/project/new/select.blade.php'));
+
+    expect($view)
+        ->not->toContain('dark:group-hover:text-warning')
+        ->and(substr_count($view, 'class="button button-highlighted ml-auto"'))->toBe(4);
+});