chore(admin-ui): add admin pagination template and styles

tests/Feature/AdminPaginationViewShouldRenderWithAdminClassesTest.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminPaginationViewShouldRenderWithAdminClassesTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_admin_pagination_view_should_render_with_admin_classes(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        // 构造一个简单的分页器，直接渲染 links()，避免依赖 seed 数据量。
+        $p = new \Illuminate\Pagination\LengthAwarePaginator(
+            collect([1, 2, 3, 4, 5, 6]),
+            6,
+            2,
+            2,
+            ['path' => '/admin/products']
+        );
+
+        $html = (string) $p->links();
+
+        // 护栏：自定义分页模板必须输出统一的 admin pagination class。
+        $this->assertStringContainsString('adm-pagination', $html);
+        $this->assertStringContainsString('adm-page-num', $html);
+    }
+}