fix: prevent generating offer links while booking is in draft

tests/Service/AccommodationBookingServiceTest.php

@@ -69,8 +69,11 @@ class AccommodationBookingServiceTest extends TestCase
 
         $service = $this->createServiceWithAccommodation(entityManager: $entityManager);
 
+        // Eingegangen is what persist() gives a direct booking — it is never a draft, which
+        // is the one status that would hold the link back.
         $booking = new AccommodationBooking();
         $booking->setOrigin(AccommodationBookingOrigin::Direct);
+        $booking->setStatus(AccommodationBookingStatus::Received);
 
         $service->issueAccessLinkForDirectBooking($booking);
 
@@ -101,6 +104,7 @@ class AccommodationBookingServiceTest extends TestCase
 
         $booking = new AccommodationBooking();
         $booking->setOrigin(AccommodationBookingOrigin::Direct);
+        $booking->setStatus(AccommodationBookingStatus::Received);
         $issuedAt = new \DateTimeImmutable('2026-01-01');
         $booking->setAccessLinkIssuedAt($issuedAt);
 
@@ -268,6 +272,25 @@ class AccommodationBookingServiceTest extends TestCase
         self::assertNotSame($previousIssuedAt, $booking->getAccessLinkIssuedAt());
     }
 
+    public function testADraftGetsNoAccessLinkGenerated(): void
+    {
+        // A draft has not been offered to anyone, so there is nothing a link could show —
+        // the link is issued by sendOffer(), together with the mail that carries it.
+        $booking = new AccommodationBooking();
+        $booking->setEmail('[email protected]');
+        $booking->setStatus(AccommodationBookingStatus::Draft);
+
+        $entityManager = $this->createMock(EntityManagerInterface::class);
+        $entityManager->expects(self::never())->method('flush');
+
+        $service = $this->createServiceWithAccommodation(entityManager: $entityManager);
+
+        $service->issueAccessLink($booking);
+        $service->regenerateAccessLink($booking);
+
+        self::assertNull($booking->getAccessLinkIssuedAt());
+    }
+
     public function testAnInquiryIsPersistedAsRequestedSoTheOfficeStillOwesAnOffer(): void
     {
         // Angefragt, not Offen: the customer has asked, nobody has offered anything yet.