feat(subscriptions): add cross links between expiry summary cards

tests/Feature/AdminSiteSubscriptionExpiryCardsCrossLinksTest.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminSiteSubscriptionExpiryCardsCrossLinksTest 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_expiry_summary_cards_should_have_cross_links(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $this->get('/admin/site-subscriptions')
+            ->assertOk()
+            ->assertSee('已过期（按到期时间）')
+            ->assertSee('7天内到期')
+            ->assertSee('查看7天内到期')
+            ->assertSee('查看已过期')
+            ->assertSee('expiry=expiring_7d', false)
+            ->assertSee('expiry=expired', false);
+    }
+}