give fake clock a constructor

backend/tests/Fakes/FakeClock.php

@@ -4,12 +4,18 @@ namespace Tests\Fakes;
 
 use App\Auth\Clock;
 use DateTimeImmutable;
-use DateTimeZone;
 
 class FakeClock implements Clock
 {
+    public function __construct(private DateTimeImmutable $currentTime) {}
+
     public function now(): DateTimeImmutable
     {
-        return new DateTimeImmutable('2026-05-18 12:00:00', new DateTimeZone('UTC'));
+        return $this->currentTime;
+    }
+
+    public function setTime(DateTimeImmutable $newTime): void
+    {
+        $this->currentTime = $newTime;
     }
 }