Subscriptions: add expiry governance block on index

tests/Feature/AdminSiteSubscriptionIndexExpiryGovernanceBlockTest.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminSiteSubscriptionIndexExpiryGovernanceBlockTest 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_index_should_render_expiry_governance_block_with_quick_links(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $res = $this->get('/admin/site-subscriptions');
+        $res->assertOk();
+
+        $res->assertSee('到期治理');
+
+        // 链接应使用 quick filter：仅 expiry，不附带 status
+        $res->assertSee('href="/admin/site-subscriptions?expiry=expired"', false);
+        $res->assertSee('href="/admin/site-subscriptions?expiry=expiring_7d"', false);
+
+        $res->assertSee('已过期');
+        $res->assertSee('7天内到期');
+    }
+}