backend/src/main/java/org/raddatz/familienarchiv/document/DocumentRepository.java

@@ -36,6 +36,13 @@ public interface DocumentRepository extends JpaRepository<Document, UUID>, JpaSp
     @EntityGraph("Document.list")
     Page<Document> findAll(Pageable pageable);
 
+    // Loader for the relevance fast path: list-item enrichment reads tags after the
+    // repository call returns, so the fetch shape must match the spec-based findAll
+    // overloads above. Plain findAllById carries no entity graph and must not feed
+    // enrichItems — see DocumentService.relevanceSortedPageFromSql.
+    @EntityGraph("Document.list")
+    List<Document> findByIdIn(Collection<UUID> ids);
+
     // Findet ein Dokument anhand des ursprünglichen Dateinamens
     // Wichtig für den Abgleich beim Excel-Import & Datei-Upload
     Optional<Document> findByOriginalFilename(String originalFilename);

backend/src/main/java/org/raddatz/familienarchiv/document/DocumentService.java

@@ -858,7 +858,7 @@ public class DocumentService {
             rankMap.put(ftsPage.hits().get(i).id(), i);
             pageIds.add(ftsPage.hits().get(i).id());
         }
-        List<Document> docs = documentRepository.findAllById(pageIds).stream()
+        List<Document> docs = documentRepository.findByIdIn(pageIds).stream()
                 .sorted(Comparator.comparingInt(d -> rankMap.getOrDefault(d.getId(), Integer.MAX_VALUE)))
                 .toList();
         return buildResultPaged(docs, text, pageable, ftsPage.total());

backend/src/test/java/org/raddatz/familienarchiv/document/DocumentLazyLoadingTest.java

@@ -131,6 +131,28 @@ class DocumentLazyLoadingTest {
                 .doesNotThrowAnyException();
     }
 
+    @Test
+    void searchDocuments_pureTextRelevance_doesNotThrowLazyInitializationException() {
+        // q + default sort + no other filters → the relevance fast path
+        // (relevanceSortedPageFromSql), which loads documents by id outside any
+        // transaction and must still deliver an initialized tags collection.
+        Person sender = savedPerson("Hans", "FtSender");
+        Tag tag = savedTag("FtTag");
+        savedDocument("Brief von Walter", "ft_doc.pdf", sender, Set.of(), Set.of(tag));
+
+        SearchFilters textOnly = new SearchFilters(
+                "Walter", null, null, null, null, null, null, null, null, false);
+
+        DocumentSearchResult result = documentService.searchDocuments(
+                textOnly, null, "DESC", PageRequest.of(0, 10));
+
+        assertThat(result.totalElements()).isEqualTo(1);
+        assertThatCode(() ->
+                result.items().forEach(i -> i.tags().size()))
+                .doesNotThrowAnyException();
+        assertThat(result.items().getFirst().tags()).extracting(Tag::getName).containsExactly("FtTag");
+    }
+
     @Test
     void searchDocuments_senderSort_doesNotThrowLazyInitializationException() {
         Person sender = savedPerson("Hans", "SsSender");