fix(ui): scope resource card keys and env count hide

Limit enter/space deploy handlers to the card root with .self so nested focusable content no longer triggers deploy. Hide the environments table resource count on mobile via a stable class instead of nth-child.

tests/Feature/NewResourceCardInteractionTest.php

@@ -0,0 +1,10 @@
+<?php
+
+it('only deploys from keyboard events on the resource card itself', function () {
+    $view = file_get_contents(resource_path('views/livewire/project/new/select.blade.php'));
+
+    expect(substr_count($view, '@keydown.enter.self.prevent='))->toBe(4)
+        ->and(substr_count($view, '@keydown.space.self.prevent='))->toBe(4)
+        ->and($view)->not->toContain('@keydown.enter.prevent=')
+        ->and($view)->not->toContain('@keydown.space.prevent=');
+});