Add analytics test with real data to cover visitor/pageview chart loops

Creates AnalyticsUniqId and AnalyticsEvent records in DB so the
daily chart aggregation loops (visitorsPerDay, pageviewsPerDay,
allDays merge, DateTimeInterface check) are fully exercised.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/Controller/AdminControllerTest.php

@@ -1210,6 +1210,42 @@ class AdminControllerTest extends WebTestCase
         self::assertResponseIsSuccessful();
     }
 
+    public function testAnalyticsWithData(): void
+    {
+        $client = static::createClient();
+        $em = static::getContainer()->get(EntityManagerInterface::class);
+        $admin = $this->createUser(['ROLE_ROOT']);
+
+        $visitor = new \App\Entity\AnalyticsUniqId();
+        $visitor->setUid('test-'.uniqid());
+        $visitor->setHash(hash('sha256', 'test'));
+        $visitor->setIpHash(hash('sha256', '127.0.0.1'));
+        $visitor->setUserAgent('PHPUnit Test Browser');
+        $visitor->setDeviceType('desktop');
+        $visitor->setOs('Linux');
+        $visitor->setBrowser('Chrome');
+        $em->persist($visitor);
+
+        $event = new \App\Entity\AnalyticsEvent();
+        $event->setVisitor($visitor);
+        $event->setUrl('/test-page');
+        $event->setTitle('Test Page');
+        $event->setReferrer('https://google.com');
+        $em->persist($event);
+
+        $event2 = new \App\Entity\AnalyticsEvent();
+        $event2->setVisitor($visitor);
+        $event2->setUrl('/another-page');
+        $em->persist($event2);
+
+        $em->flush();
+
+        $client->loginUser($admin);
+        $client->request('GET', '/admin/analytics?period=7d');
+
+        self::assertResponseIsSuccessful();
+    }
+
     public function testAnalyticsDeniedForNonRoot(): void
     {
         $client = static::createClient();