diff --git a/backend/src/test/java/org/raddatz/familienarchiv/geschichte/journeyitem/JourneyItemIntegrationTest.java b/backend/src/test/java/org/raddatz/familienarchiv/geschichte/journeyitem/JourneyItemIntegrationTest.java
index 00c2591c..b6c9fcbe 100644
--- a/backend/src/test/java/org/raddatz/familienarchiv/geschichte/journeyitem/JourneyItemIntegrationTest.java
+++ b/backend/src/test/java/org/raddatz/familienarchiv/geschichte/journeyitem/JourneyItemIntegrationTest.java
@@ -2,6 +2,7 @@ package org.raddatz.familienarchiv.geschichte.journeyitem;
 
 import jakarta.persistence.EntityManager;
 import jakarta.persistence.PersistenceContext;
+import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.raddatz.familienarchiv.PostgresContainerConfig;
@@ -12,9 +13,15 @@ import org.raddatz.familienarchiv.geschichte.Geschichte;
 import org.raddatz.familienarchiv.geschichte.GeschichteRepository;
 import org.raddatz.familienarchiv.geschichte.GeschichteStatus;
 import org.raddatz.familienarchiv.geschichte.GeschichteType;
+import org.raddatz.familienarchiv.security.Permission;
+import org.raddatz.familienarchiv.user.AppUser;
+import org.raddatz.familienarchiv.user.AppUserRepository;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.context.annotation.Import;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.test.context.ActiveProfiles;
 import org.springframework.test.context.bean.override.mockito.MockitoBean;
 import org.springframework.transaction.annotation.Transactional;
@@ -40,13 +47,20 @@ class JourneyItemIntegrationTest {
 
     @Autowired GeschichteRepository geschichteRepository;
     @Autowired JourneyItemRepository journeyItemRepository;
+    @Autowired JourneyItemService journeyItemService;
     @Autowired DocumentRepository documentRepository;
+    @Autowired AppUserRepository appUserRepository;
 
     Geschichte journey;
     Document doc;
+    AppUser writer;
 
     @BeforeEach
     void seed() {
+        writer = appUserRepository.save(AppUser.builder()
+                .email("journey-writer@test")
+                .password("hash")
+                .build());
         doc = documentRepository.save(Document.builder()
                 .title("Testbrief")
                 .originalFilename("testbrief.pdf")
@@ -61,6 +75,19 @@ class JourneyItemIntegrationTest {
         em.clear();
     }
 
+    @AfterEach
+    void clearSecurity() {
+        SecurityContextHolder.clearContext();
+    }
+
+    private void authenticateAs(AppUser user, Permission... permissions) {
+        var authorities = java.util.Arrays.stream(permissions)
+                .map(p -> new SimpleGrantedAuthority(p.name()))
+                .toList();
+        SecurityContextHolder.getContext().setAuthentication(
+                new UsernamePasswordAuthenticationToken(user.getEmail(), null, authorities));
+    }
+
     // ─── @OrderBy ─────────────────────────────────────────────────────────────
 
     @Test
@@ -206,4 +233,62 @@ class JourneyItemIntegrationTest {
             journeyItemRepository.flush();
         }).isInstanceOf(Exception.class);
     }
+
+    // ─── JourneyItemService.append — end-to-end persistence ──────────────────
+
+    @Test
+    void append_persists_item_at_position_10() {
+        // Arrange: authenticate as a user with BLOG_WRITE
+        authenticateAs(writer, Permission.BLOG_WRITE);
+
+        JourneyItemCreateDTO dto = new JourneyItemCreateDTO();
+        dto.setNote("First stop");
+
+        // Act
+        JourneyItemView view = journeyItemService.append(journey.getId(), dto);
+        em.flush();
+        em.clear();
+
+        // Assert: item exists in DB at position 10
+        assertThat(view.position()).isEqualTo(10);
+        assertThat(view.note()).isEqualTo("First stop");
+        List<JourneyItem> persisted = journeyItemRepository.findByGeschichteIdOrderByPosition(journey.getId());
+        assertThat(persisted).hasSize(1);
+        assertThat(persisted.get(0).getPosition()).isEqualTo(10);
+        assertThat(persisted.get(0).getNote()).isEqualTo("First stop");
+    }
+
+    // ─── JourneyItemService.reorder — atomicity check ────────────────────────
+
+    @Test
+    void reorder_swaps_positions_atomically() {
+        // Arrange: append two items (pos 10, pos 20)
+        authenticateAs(writer, Permission.BLOG_WRITE);
+
+        JourneyItemCreateDTO dto1 = new JourneyItemCreateDTO();
+        dto1.setNote("Item one");
+        JourneyItemView item1View = journeyItemService.append(journey.getId(), dto1);
+
+        JourneyItemCreateDTO dto2 = new JourneyItemCreateDTO();
+        dto2.setNote("Item two");
+        JourneyItemView item2View = journeyItemService.append(journey.getId(), dto2);
+
+        assertThat(item1View.position()).isEqualTo(10);
+        assertThat(item2View.position()).isEqualTo(20);
+
+        // Act: reorder with [item2, item1]
+        JourneyReorderDTO reorderDto = new JourneyReorderDTO();
+        reorderDto.setItemIds(List.of(item2View.id(), item1View.id()));
+        List<JourneyItemView> reordered = journeyItemService.reorder(journey.getId(), reorderDto);
+        em.flush();
+        em.clear();
+
+        // Assert: item2 is now at position 10, item1 is at position 20
+        List<JourneyItem> persisted = journeyItemRepository.findByGeschichteIdOrderByPosition(journey.getId());
+        assertThat(persisted).hasSize(2);
+        assertThat(persisted.get(0).getId()).isEqualTo(item2View.id());
+        assertThat(persisted.get(0).getPosition()).isEqualTo(10);
+        assertThat(persisted.get(1).getId()).isEqualTo(item1View.id());
+        assertThat(persisted.get(1).getPosition()).isEqualTo(20);
+    }
 }