fix(frontend): zoom buttons now re-render immediately (#39)

scale was only read inside the async renderPage function, so Svelte 5
never tracked it as a reactive dependency of the effect. Reading scale
synchronously in the effect condition registers it as a dependency and
triggers a re-render on every zoom change.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -190,6 +190,7 @@ jobs:
           E2E_BASE_URL: http://localhost:3000
           E2E_USERNAME: admin
           E2E_PASSWORD: admin123
+          E2E_BACKEND_URL: http://localhost:8080
 
       - name: Upload E2E results
         if: always()

COLLABORATING.md

@@ -43,6 +43,42 @@ Repeat for each new behavior.
 - The Refactor step must not change behavior — if a test breaks, the refactor introduced a bug.
 - If a bug is reported with no test, write the failing test first, then fix it.
 
+## User Journeys & E2E Acceptance Criteria
+
+Every `feature` issue must include two sections before any implementation begins:
+
+### 1. User Journey
+
+A plain-prose description of the steps a user takes to get value from the feature. Written from the user's perspective, not the implementation's:
+
+> User opens a document, clicks "History", sees a chronological list of changes with editor name and timestamp. Clicking a row expands the old vs. new values.
+
+This makes the scope concrete and prevents scope creep — anything not in the journey is out of scope for the issue.
+
+### 2. E2E Scenarios
+
+One or more acceptance criteria written as Playwright-ready scenarios. These become the outermost Red test in the TDD cycle — no feature is considered done until all its E2E scenarios pass:
+
+```
+Scenario: View edit history of a document
+  Given I am on a document detail page
+  When I click the "History" tab
+  Then I see at least one revision entry
+  And each entry shows the editor's name and a timestamp
+```
+
+Use this format consistently. It maps directly to `test.describe` / `test` blocks in the Playwright spec.
+
+### Where this fits in the workflow
+
+```
+Issue (Journey + Scenarios) → Red E2E test → Implementation → Green
+```
+
+The scenarios in the issue are the contract. Write them before planning, treat them as failing tests from day one.
+
+---
+
 ## Issue Tracking (Gitea)
 
 All work is tracked in **Gitea** at `http://192.168.178.71:3005` (repo `marcel/familienarchiv`). Never use todo files or CLAUDE.md notes as a substitute.

backend/pom.xml

@@ -119,6 +119,10 @@
 			<artifactId>lombok</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-mail</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.flywaydb</groupId>
 			<artifactId>flyway-core</artifactId>

backend/src/main/java/org/raddatz/familienarchiv/config/AsyncConfig.java

@@ -6,10 +6,12 @@ import java.util.concurrent.ThreadPoolExecutor;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.scheduling.annotation.EnableAsync;
+import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
 
 @Configuration
 @EnableAsync
+@EnableScheduling
 public class AsyncConfig {
     @Bean
     public Executor taskExecutor() {

backend/src/main/java/org/raddatz/familienarchiv/config/DataInitializer.java

@@ -43,8 +43,8 @@ public class DataInitializer {
     @Bean
     public CommandLineRunner initAdminUser(PasswordEncoder passwordEncoder) {
         return args -> {
-            if (userRepository.count() == 0) {
-                log.info("Keine User gefunden. Erstelle Default-Admin...");
+            if (userRepository.findByUsername(adminUsername).isEmpty()) {
+                log.info("Kein Admin-User '{}' gefunden. Erstelle Default-Admin...", adminUsername);
 
                 // 1. Admin Gruppe erstellen
                 UserGroup adminGroup = UserGroup.builder()
@@ -81,7 +81,8 @@ public class DataInitializer {
     @Profile("e2e")
     public CommandLineRunner initE2EData(PersonRepository personRepo,
             DocumentRepository docRepo,
-            TagRepository tagRepo) {
+            TagRepository tagRepo,
+            PasswordEncoder passwordEncoder) {
         return args -> {
             if (personRepo.count() > 0) {
                 log.info("E2E seed: Daten bereits vorhanden, überspringe.");
@@ -165,8 +166,21 @@ public class DataInitializer {
                     .receivers(Set.of(otto))
                     .build());
 
-            log.info("E2E seed: {} Personen, {} Tags, {} Dokumente erstellt.",
-                    personRepo.count(), tagRepo.count(), docRepo.count());
+            // ── Read-only user (for permissions E2E tests) ───────────────────
+            // Username: reader / Password: reader123
+            // Has only READ_ALL — used to assert write controls are absent.
+            UserGroup leserGroup = groupRepository.save(UserGroup.builder()
+                    .name("Leser")
+                    .permissions(Set.of("READ_ALL"))
+                    .build());
+            userRepository.save(AppUser.builder()
+                    .username("reader")
+                    .password(passwordEncoder.encode("reader123"))
+                    .groups(Set.of(leserGroup))
+                    .build());
+
+            log.info("E2E seed: {} Personen, {} Tags, {} Dokumente, {} Benutzer erstellt.",
+                    personRepo.count(), tagRepo.count(), docRepo.count(), userRepository.count());
         };
     }
 }

backend/src/main/java/org/raddatz/familienarchiv/config/SecurityConfig.java

@@ -48,6 +48,10 @@ public class SecurityConfig {
                 .authorizeHttpRequests(auth -> {
                     // Health endpoint must be open so CI/Docker health checks work without credentials
                     auth.requestMatchers("/actuator/health").permitAll();
+                    // Password reset endpoints are unauthenticated by nature
+                    auth.requestMatchers("/api/auth/forgot-password", "/api/auth/reset-password").permitAll();
+                    // E2E test helper (only active under "e2e" profile)
+                    auth.requestMatchers("/api/auth/reset-token-for-test").permitAll();
                     // In dev, allow unauthenticated access to the OpenAPI spec and Swagger UI
                     if (environment.matchesProfiles("dev")) {
                         auth.requestMatchers(

backend/src/main/java/org/raddatz/familienarchiv/controller/AdminController.java

@@ -1,7 +1,10 @@
 package org.raddatz.familienarchiv.controller;
 
+import org.raddatz.familienarchiv.dto.BackfillResult;
 import org.raddatz.familienarchiv.security.Permission;
 import org.raddatz.familienarchiv.security.RequirePermission;
+import org.raddatz.familienarchiv.service.DocumentService;
+import org.raddatz.familienarchiv.service.DocumentVersionService;
 import org.raddatz.familienarchiv.service.MassImportService;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -18,6 +21,8 @@ import lombok.RequiredArgsConstructor;
 public class AdminController {
 
     private final MassImportService massImportService;
+    private final DocumentService documentService;
+    private final DocumentVersionService documentVersionService;
 
     @PostMapping("/trigger-import")
     public ResponseEntity<MassImportService.ImportStatus> triggerMassImport() {
@@ -29,4 +34,11 @@ public class AdminController {
     public ResponseEntity<MassImportService.ImportStatus> importStatus() {
         return ResponseEntity.ok(massImportService.getStatus());
     }
+
+    @PostMapping("/backfill-versions")
+    public ResponseEntity<BackfillResult> backfillVersions() {
+        int count = documentVersionService.backfillMissingVersions(
+                documentService.getDocumentsWithoutVersions());
+        return ResponseEntity.ok(new BackfillResult(count));
+    }
 }

backend/src/main/java/org/raddatz/familienarchiv/controller/AuthController.java

@@ -0,0 +1,37 @@
+package org.raddatz.familienarchiv.controller;
+
+import org.raddatz.familienarchiv.dto.ForgotPasswordRequest;
+import org.raddatz.familienarchiv.dto.ResetPasswordRequest;
+import org.raddatz.familienarchiv.service.PasswordResetService;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import lombok.RequiredArgsConstructor;
+
+@RestController
+@RequestMapping("/api/auth")
+@RequiredArgsConstructor
+public class AuthController {
+
+    private final PasswordResetService passwordResetService;
+
+    @Value("${app.base-url:http://localhost:3000}")
+    private String appBaseUrl;
+
+    @PostMapping("/forgot-password")
+    public ResponseEntity<Void> forgotPassword(@RequestBody ForgotPasswordRequest request) {
+        passwordResetService.requestReset(request.getEmail(), appBaseUrl);
+        // Always return 204 — never disclose whether the email exists
+        return ResponseEntity.noContent().build();
+    }
+
+    @PostMapping("/reset-password")
+    public ResponseEntity<Void> resetPassword(@RequestBody ResetPasswordRequest request) {
+        passwordResetService.resetPassword(request);
+        return ResponseEntity.noContent().build();
+    }
+}

backend/src/main/java/org/raddatz/familienarchiv/controller/AuthE2EController.java

@@ -0,0 +1,33 @@
+package org.raddatz.familienarchiv.controller;
+
+import java.time.LocalDateTime;
+
+import org.raddatz.familienarchiv.repository.PasswordResetTokenRepository;
+import org.springframework.context.annotation.Profile;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import lombok.RequiredArgsConstructor;
+
+/**
+ * Test-only endpoint to retrieve a password reset token by email.
+ * Only active under the "e2e" Spring profile.
+ */
+@RestController
+@RequestMapping("/api/auth")
+@Profile("e2e")
+@RequiredArgsConstructor
+public class AuthE2EController {
+
+    private final PasswordResetTokenRepository tokenRepository;
+
+    @GetMapping("/reset-token-for-test")
+    public ResponseEntity<String> getResetTokenForTest(@RequestParam String email) {
+        return tokenRepository.findLatestActiveTokenByEmail(email, LocalDateTime.now())
+                .map(ResponseEntity::ok)
+                .orElse(ResponseEntity.notFound().build());
+    }
+}

backend/src/main/java/org/raddatz/familienarchiv/controller/DocumentController.java

@@ -5,13 +5,18 @@ import java.time.LocalDate;
 import java.util.List;
 import java.util.UUID;
 
+
+
 import org.raddatz.familienarchiv.dto.DocumentUpdateDTO;
+import org.raddatz.familienarchiv.dto.DocumentVersionSummary;
 import org.raddatz.familienarchiv.exception.DomainException;
 import org.raddatz.familienarchiv.exception.ErrorCode;
 import org.raddatz.familienarchiv.model.Document;
+import org.raddatz.familienarchiv.model.DocumentVersion;
 import org.raddatz.familienarchiv.security.Permission;
 import org.raddatz.familienarchiv.security.RequirePermission;
 import org.raddatz.familienarchiv.service.DocumentService;
+import org.raddatz.familienarchiv.service.DocumentVersionService;
 import org.raddatz.familienarchiv.service.FileService;
 import org.springframework.data.domain.Sort;
 import org.springframework.http.HttpHeaders;
@@ -39,6 +44,7 @@ import lombok.extern.slf4j.Slf4j;
 public class DocumentController {
 
     private final DocumentService documentService;
+    private final DocumentVersionService documentVersionService;
     private final FileService fileService;
 
     // --- DOWNLOAD ---
@@ -108,6 +114,18 @@ public class DocumentController {
         return ResponseEntity.ok(documentService.searchDocuments(q, from, to, senderId, receiverId, tags));
     }
 
+    // --- VERSIONS ---
+
+    @GetMapping("/{id}/versions")
+    public List<DocumentVersionSummary> getVersions(@PathVariable UUID id) {
+        return documentVersionService.getSummaries(id);
+    }
+
+    @GetMapping("/{id}/versions/{versionId}")
+    public DocumentVersion getVersion(@PathVariable UUID id, @PathVariable UUID versionId) {
+        return documentVersionService.getVersion(id, versionId);
+    }
+
     @GetMapping("/conversation")
     public List<Document> getConversation(
             @RequestParam UUID senderId,

backend/src/main/java/org/raddatz/familienarchiv/controller/UserController.java

@@ -4,6 +4,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 
+import org.raddatz.familienarchiv.dto.AdminUpdateUserRequest;
 import org.raddatz.familienarchiv.dto.ChangePasswordDTO;
 import org.raddatz.familienarchiv.dto.CreateUserRequest;
 import org.raddatz.familienarchiv.dto.UpdateProfileDTO;
@@ -79,6 +80,15 @@ public class UserController {
         return ResponseEntity.ok(userService.createUserOrUpdate(request));
     }
 
+    @PutMapping("/users/{id}")
+    @RequirePermission(Permission.ADMIN_USER)
+    public ResponseEntity<AppUser> adminUpdateUser(@PathVariable UUID id,
+                                                    @RequestBody AdminUpdateUserRequest dto) {
+        AppUser updated = userService.adminUpdateUser(id, dto);
+        updated.setPassword(null);
+        return ResponseEntity.ok(updated);
+    }
+
     @DeleteMapping("/users/{id}")
     @RequirePermission(Permission.ADMIN_USER)
     public ResponseEntity<Void> deleteUser(@PathVariable UUID id) {

backend/src/main/java/org/raddatz/familienarchiv/dto/AdminUpdateUserRequest.java

@@ -0,0 +1,18 @@
+package org.raddatz.familienarchiv.dto;
+
+import lombok.Data;
+
+import java.time.LocalDate;
+import java.util.List;
+import java.util.UUID;
+
+@Data
+public class AdminUpdateUserRequest {
+    private String firstName;
+    private String lastName;
+    private LocalDate birthDate;
+    private String email;
+    private String contact;
+    private String newPassword;
+    private List<UUID> groupIds;
+}

backend/src/main/java/org/raddatz/familienarchiv/dto/BackfillResult.java

@@ -0,0 +1,7 @@
+package org.raddatz.familienarchiv.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+public record BackfillResult(
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) int count
+) {}

backend/src/main/java/org/raddatz/familienarchiv/dto/CreateUserRequest.java

@@ -3,6 +3,7 @@ package org.raddatz.familienarchiv.dto;
 
 import lombok.Data;
 
+import java.time.LocalDate;
 import java.util.List;
 import java.util.UUID;
 
@@ -11,5 +12,9 @@ public class CreateUserRequest {
     private String username;
     private String email;
     private String initialPassword;
-    private List<UUID> groupIds; // In welche Gruppen soll der User?
+    private List<UUID> groupIds;
+    private String firstName;
+    private String lastName;
+    private LocalDate birthDate;
+    private String contact;
 }

backend/src/main/java/org/raddatz/familienarchiv/dto/DocumentVersionSummary.java

@@ -0,0 +1,14 @@
+package org.raddatz.familienarchiv.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.UUID;
+
+public record DocumentVersionSummary(
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) UUID id,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) LocalDateTime savedAt,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) String editorName,
+        @Schema(requiredMode = Schema.RequiredMode.REQUIRED) List<String> changedFields
+) {}

backend/src/main/java/org/raddatz/familienarchiv/dto/ForgotPasswordRequest.java

@@ -0,0 +1,8 @@
+package org.raddatz.familienarchiv.dto;
+
+import lombok.Data;
+
+@Data
+public class ForgotPasswordRequest {
+    private String email;
+}

backend/src/main/java/org/raddatz/familienarchiv/dto/ResetPasswordRequest.java

@@ -0,0 +1,9 @@
+package org.raddatz.familienarchiv.dto;
+
+import lombok.Data;
+
+@Data
+public class ResetPasswordRequest {
+    private String token;
+    private String newPassword;
+}

backend/src/main/java/org/raddatz/familienarchiv/exception/ErrorCode.java

@@ -35,6 +35,8 @@ public enum ErrorCode {
     UNAUTHORIZED,
     /** The authenticated user lacks the required permission. 403 */
     FORBIDDEN,
+    /** The password-reset token is missing, expired, or already used. 400 */
+    INVALID_RESET_TOKEN,
 
     // --- Generic ---
     /** Request validation failed (missing or malformed fields). 400 */

backend/src/main/java/org/raddatz/familienarchiv/model/DocumentVersion.java

@@ -0,0 +1,50 @@
+package org.raddatz.familienarchiv.model;
+
+import jakarta.persistence.*;
+import lombok.*;
+import org.hibernate.annotations.JdbcTypeCode;
+import org.hibernate.type.SqlTypes;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Entity
+@Table(name = "document_versions")
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class DocumentVersion {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    @Schema(requiredMode = Schema.RequiredMode.REQUIRED)
+    private UUID id;
+
+    @Column(name = "document_id", nullable = false)
+    @Schema(requiredMode = Schema.RequiredMode.REQUIRED)
+    private UUID documentId;
+
+    @Column(name = "saved_at", nullable = false)
+    @Schema(requiredMode = Schema.RequiredMode.REQUIRED)
+    private LocalDateTime savedAt;
+
+    @Column(name = "editor_id")
+    private UUID editorId;
+
+    @Column(name = "editor_name", nullable = false)
+    @Schema(requiredMode = Schema.RequiredMode.REQUIRED)
+    private String editorName;
+
+    @JdbcTypeCode(SqlTypes.JSON)
+    @Column(columnDefinition = "jsonb", nullable = false)
+    @Schema(requiredMode = Schema.RequiredMode.REQUIRED)
+    private String snapshot;
+
+    @JdbcTypeCode(SqlTypes.JSON)
+    @Column(name = "changed_fields", columnDefinition = "jsonb", nullable = false)
+    @Schema(requiredMode = Schema.RequiredMode.REQUIRED)
+    private String changedFields;
+}

backend/src/main/java/org/raddatz/familienarchiv/model/PasswordResetToken.java

@@ -0,0 +1,45 @@
+package org.raddatz.familienarchiv.model;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Table(name = "password_reset_tokens")
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class PasswordResetToken {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    private UUID id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "user_id", nullable = false)
+    private AppUser user;
+
+    @Column(nullable = false, unique = true, length = 64)
+    private String token;
+
+    @Column(name = "expires_at", nullable = false)
+    private LocalDateTime expiresAt;
+
+    @Column(nullable = false)
+    @Builder.Default
+    private boolean used = false;
+}

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

@@ -34,6 +34,9 @@ public interface DocumentRepository extends JpaRepository<Document, UUID>, JpaSp
 
     List<Document> findByTags_Id(UUID tagId);
 
+    @Query("SELECT d FROM Document d WHERE d.id NOT IN (SELECT DISTINCT dv.documentId FROM DocumentVersion dv)")
+    List<Document> findDocumentsWithoutVersions();
+
     @Query("SELECT DISTINCT d FROM Document d " +
             "JOIN d.receivers r " +
             "WHERE " +

backend/src/main/java/org/raddatz/familienarchiv/repository/DocumentVersionRepository.java

@@ -0,0 +1,17 @@
+package org.raddatz.familienarchiv.repository;
+
+import org.raddatz.familienarchiv.model.DocumentVersion;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+@Repository
+public interface DocumentVersionRepository extends JpaRepository<DocumentVersion, UUID> {
+
+    List<DocumentVersion> findByDocumentIdOrderBySavedAtAsc(UUID documentId);
+
+    Optional<DocumentVersion> findByIdAndDocumentId(UUID id, UUID documentId);
+}

backend/src/main/java/org/raddatz/familienarchiv/repository/PasswordResetTokenRepository.java

@@ -0,0 +1,22 @@
+package org.raddatz.familienarchiv.repository;
+
+import java.time.LocalDateTime;
+import java.util.Optional;
+import java.util.UUID;
+
+import org.raddatz.familienarchiv.model.PasswordResetToken;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+
+public interface PasswordResetTokenRepository extends JpaRepository<PasswordResetToken, UUID> {
+
+    Optional<PasswordResetToken> findByToken(String token);
+
+    @Query("SELECT t.token FROM PasswordResetToken t WHERE t.user.email = :email AND t.used = false AND t.expiresAt > :now ORDER BY t.expiresAt DESC LIMIT 1")
+    Optional<String> findLatestActiveTokenByEmail(String email, LocalDateTime now);
+
+    @Modifying
+    @Query("DELETE FROM PasswordResetToken t WHERE t.expiresAt < :now OR t.used = true")
+    void deleteExpiredAndUsed(LocalDateTime now);
+}

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

@@ -37,6 +37,7 @@ public class DocumentService {
     private final PersonService personService;
     private final FileService fileService;
     private final TagService tagService;
+    private final DocumentVersionService documentVersionService;
 
     /**
      * Lädt eine Datei hoch.
@@ -125,7 +126,9 @@ public class DocumentService {
             doc.setStatus(DocumentStatus.UPLOADED);
         }
 
-        return documentRepository.save(doc);
+        Document finalDoc = documentRepository.save(doc);
+        documentVersionService.recordVersion(finalDoc);
+        return finalDoc;
     }
 
     @Transactional
@@ -178,7 +181,9 @@ public class DocumentService {
             doc.setStatus(DocumentStatus.UPLOADED);
         }
 
-        return documentRepository.save(doc);
+        Document saved = documentRepository.save(doc);
+        documentVersionService.recordVersion(saved);
+        return saved;
     }
 
     public Document updateDocumentTags(UUID docId, List<String> tagNames) {
@@ -252,6 +257,10 @@ public class DocumentService {
                 .orElseThrow(() -> DomainException.notFound(ErrorCode.DOCUMENT_NOT_FOUND, "Document not found: " + id));
     }
 
+    public List<Document> getDocumentsWithoutVersions() {
+        return documentRepository.findDocumentsWithoutVersions();
+    }
+
     public List<Document> getDocumentsBySender(UUID senderId) {
         return documentRepository.findBySenderId(senderId);
     }

backend/src/main/java/org/raddatz/familienarchiv/service/DocumentVersionService.java

@@ -0,0 +1,229 @@
+package org.raddatz.familienarchiv.service;
+
+import tools.jackson.core.type.TypeReference;
+import tools.jackson.databind.ObjectMapper;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.raddatz.familienarchiv.dto.DocumentVersionSummary;
+import org.raddatz.familienarchiv.exception.DomainException;
+import org.raddatz.familienarchiv.exception.ErrorCode;
+import org.raddatz.familienarchiv.model.AppUser;
+import org.raddatz.familienarchiv.model.Document;
+import org.raddatz.familienarchiv.model.DocumentVersion;
+import org.raddatz.familienarchiv.model.Person;
+import org.raddatz.familienarchiv.model.Tag;
+import org.raddatz.familienarchiv.repository.DocumentVersionRepository;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+@Service
+@RequiredArgsConstructor
+@Slf4j
+public class DocumentVersionService {
+
+    private final DocumentVersionRepository versionRepository;
+    private final UserService userService;
+    private final ObjectMapper objectMapper;
+
+    @Transactional
+    public void recordVersion(Document doc) {
+        AppUser editor = resolveCurrentUser();
+        String editorName = buildEditorName(editor);
+        UUID editorId = editor != null ? editor.getId() : null;
+
+        String snapshot = serializeSnapshot(doc);
+        List<DocumentVersion> previous = versionRepository.findByDocumentIdOrderBySavedAtAsc(doc.getId());
+        String changedFields = computeChangedFields(doc, previous);
+
+        versionRepository.save(DocumentVersion.builder()
+                .documentId(doc.getId())
+                .savedAt(LocalDateTime.now())
+                .editorId(editorId)
+                .editorName(editorName)
+                .snapshot(snapshot)
+                .changedFields(changedFields)
+                .build());
+    }
+
+    @Transactional
+    public int backfillMissingVersions(List<Document> docs) {
+        int count = 0;
+        for (Document doc : docs) {
+            List<DocumentVersion> existing = versionRepository.findByDocumentIdOrderBySavedAtAsc(doc.getId());
+            if (!existing.isEmpty()) continue;
+            LocalDateTime savedAt = doc.getCreatedAt() != null ? doc.getCreatedAt() : LocalDateTime.now();
+            versionRepository.save(DocumentVersion.builder()
+                    .documentId(doc.getId())
+                    .savedAt(savedAt)
+                    .editorId(null)
+                    .editorName("Datenimport")
+                    .snapshot(serializeSnapshot(doc))
+                    .changedFields("[]")
+                    .build());
+            count++;
+        }
+        return count;
+    }
+
+    public List<DocumentVersionSummary> getSummaries(UUID documentId) {
+        return versionRepository.findByDocumentIdOrderBySavedAtAsc(documentId).stream()
+                .map(v -> new DocumentVersionSummary(
+                        v.getId(),
+                        v.getSavedAt(),
+                        v.getEditorName(),
+                        parseChangedFields(v.getChangedFields())))
+                .toList();
+    }
+
+    public DocumentVersion getVersion(UUID documentId, UUID versionId) {
+        return versionRepository.findByIdAndDocumentId(versionId, documentId)
+                .orElseThrow(() -> DomainException.notFound(ErrorCode.DOCUMENT_NOT_FOUND,
+                        "Version not found: " + versionId));
+    }
+
+    // ─── private helpers ──────────────────────────────────────────────────────
+
+    private AppUser resolveCurrentUser() {
+        Authentication auth = SecurityContextHolder.getContext().getAuthentication();
+        if (auth == null || !auth.isAuthenticated()) {
+            return null;
+        }
+        try {
+            return userService.findByUsername(auth.getName());
+        } catch (Exception e) {
+            log.warn("Could not resolve editor for version snapshot: {}", e.getMessage());
+            return null;
+        }
+    }
+
+    private String buildEditorName(AppUser user) {
+        if (user == null) return "Unknown";
+        String first = user.getFirstName();
+        String last = user.getLastName();
+        if (first != null && !first.isBlank() && last != null && !last.isBlank()) {
+            return first + " " + last;
+        }
+        return user.getUsername();
+    }
+
+    private String serializeSnapshot(Document doc) {
+        try {
+            return objectMapper.writeValueAsString(doc);
+        } catch (Exception e) {
+            log.error("Failed to serialize document snapshot for {}", doc.getId(), e);
+            return "{}";
+        }
+    }
+
+    private String computeChangedFields(Document current, List<DocumentVersion> previousVersions) {
+        if (previousVersions.isEmpty()) {
+            return "[]";
+        }
+        DocumentVersion last = previousVersions.get(previousVersions.size() - 1);
+        try {
+            Map<String, Object> previousMap = objectMapper.readValue(
+                    last.getSnapshot(), new TypeReference<>() {});
+            List<String> changed = new ArrayList<>();
+
+            checkScalar(changed, "title", current.getTitle(), previousMap);
+            checkScalar(changed, "documentDate",
+                    current.getDocumentDate() != null ? current.getDocumentDate().toString() : null,
+                    previousMap);
+            checkScalar(changed, "location", current.getLocation(), previousMap);
+            checkScalar(changed, "documentLocation", current.getDocumentLocation(), previousMap);
+            checkScalar(changed, "transcription", current.getTranscription(), previousMap);
+            checkScalar(changed, "summary", current.getSummary(), previousMap);
+            checkSender(changed, current, previousMap);
+            checkReceivers(changed, current, previousMap);
+            checkTags(changed, current, previousMap);
+
+            return objectMapper.writeValueAsString(changed);
+        } catch (Exception e) {
+            log.warn("Could not compute changedFields for document {}", current.getId(), e);
+            return "[]";
+        }
+    }
+
+    private void checkScalar(List<String> changed, String field, String currentValue,
+                              Map<String, Object> previousMap) {
+        Object prev = previousMap.get(field);
+        String prevStr = prev != null ? prev.toString() : null;
+        if (!Objects.equals(currentValue, prevStr)) {
+            changed.add(field);
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    private void checkSender(List<String> changed, Document current, Map<String, Object> previousMap) {
+        String currentId = current.getSender() != null
+                ? current.getSender().getId().toString() : null;
+        Object prevSender = previousMap.get("sender");
+        String prevId = null;
+        if (prevSender instanceof Map<?, ?> senderMap) {
+            Object id = senderMap.get("id");
+            prevId = id != null ? id.toString() : null;
+        }
+        if (!Objects.equals(currentId, prevId)) {
+            changed.add("sender");
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    private void checkReceivers(List<String> changed, Document current, Map<String, Object> previousMap) {
+        Set<String> currentIds = current.getReceivers() != null
+                ? current.getReceivers().stream().map(p -> p.getId().toString()).collect(Collectors.toSet())
+                : Set.of();
+        Object prevReceivers = previousMap.get("receivers");
+        Set<String> prevIds = Set.of();
+        if (prevReceivers instanceof List<?> list) {
+            prevIds = list.stream()
+                    .filter(r -> r instanceof Map<?, ?>)
+                    .map(r -> ((Map<?, ?>) r).get("id"))
+                    .filter(Objects::nonNull)
+                    .map(Object::toString)
+                    .collect(Collectors.toSet());
+        }
+        if (!currentIds.equals(prevIds)) {
+            changed.add("receivers");
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    private void checkTags(List<String> changed, Document current, Map<String, Object> previousMap) {
+        Set<String> currentNames = current.getTags() != null
+                ? current.getTags().stream().map(Tag::getName).collect(Collectors.toSet())
+                : Set.of();
+        Object prevTags = previousMap.get("tags");
+        Set<String> prevNames = Set.of();
+        if (prevTags instanceof List<?> list) {
+            prevNames = list.stream()
+                    .filter(t -> t instanceof Map<?, ?>)
+                    .map(t -> ((Map<?, ?>) t).get("name"))
+                    .filter(Objects::nonNull)
+                    .map(Object::toString)
+                    .collect(Collectors.toSet());
+        }
+        if (!currentNames.equals(prevNames)) {
+            changed.add("tags");
+        }
+    }
+
+    private List<String> parseChangedFields(String json) {
+        try {
+            return objectMapper.readValue(json, new TypeReference<>() {});
+        } catch (Exception e) {
+            return List.of();
+        }
+    }
+}

backend/src/main/java/org/raddatz/familienarchiv/service/PasswordResetService.java

@@ -0,0 +1,132 @@
+package org.raddatz.familienarchiv.service;
+
+import java.security.SecureRandom;
+import java.time.LocalDateTime;
+import java.util.HexFormat;
+import java.util.Optional;
+
+import org.raddatz.familienarchiv.dto.ResetPasswordRequest;
+import org.raddatz.familienarchiv.exception.DomainException;
+import org.raddatz.familienarchiv.exception.ErrorCode;
+import org.raddatz.familienarchiv.model.AppUser;
+import org.raddatz.familienarchiv.model.PasswordResetToken;
+import org.raddatz.familienarchiv.repository.AppUserRepository;
+import org.raddatz.familienarchiv.repository.PasswordResetTokenRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.mail.MailException;
+import org.springframework.mail.SimpleMailMessage;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+
+@Service
+@RequiredArgsConstructor
+@Slf4j
+public class PasswordResetService {
+
+    private final AppUserRepository userRepository;
+    private final PasswordResetTokenRepository tokenRepository;
+    private final PasswordEncoder passwordEncoder;
+
+    @Autowired(required = false)
+    private JavaMailSender mailSender;
+
+    @Value("${app.mail.from:noreply@familienarchiv.local}")
+    private String mailFrom;
+
+    private static final SecureRandom SECURE_RANDOM = new SecureRandom();
+    private static final int TOKEN_EXPIRY_HOURS = 1;
+
+    /**
+     * Creates a reset token for the given email address and sends it via email.
+     * If the email is not found, silently does nothing (prevents user enumeration).
+     * If no mail sender is configured, logs a warning.
+     */
+    public void requestReset(String email, String appBaseUrl) {
+        Optional<AppUser> userOpt = userRepository.findByEmail(email);
+        if (userOpt.isEmpty()) {
+            log.debug("Password reset requested for unknown email: {}", email);
+            return;
+        }
+
+        AppUser user = userOpt.get();
+        String token = generateToken();
+
+        tokenRepository.save(PasswordResetToken.builder()
+                .user(user)
+                .token(token)
+                .expiresAt(LocalDateTime.now().plusHours(TOKEN_EXPIRY_HOURS))
+                .build());
+
+        sendResetEmail(user.getEmail(), token, appBaseUrl);
+    }
+
+    /**
+     * Validates the token and updates the user's password.
+     */
+    @Transactional
+    public void resetPassword(ResetPasswordRequest request) {
+        PasswordResetToken resetToken = tokenRepository.findByToken(request.getToken())
+                .orElseThrow(() -> DomainException.badRequest(
+                        ErrorCode.INVALID_RESET_TOKEN, "Invalid or unknown reset token"));
+
+        if (resetToken.isUsed() || resetToken.getExpiresAt().isBefore(LocalDateTime.now())) {
+            throw DomainException.badRequest(ErrorCode.INVALID_RESET_TOKEN, "Token expired or already used");
+        }
+
+        AppUser user = resetToken.getUser();
+        user.setPassword(passwordEncoder.encode(request.getNewPassword()));
+        userRepository.save(user);
+
+        resetToken.setUsed(true);
+        tokenRepository.save(resetToken);
+    }
+
+    /** Nightly cleanup of expired and used tokens. */
+    @Scheduled(cron = "0 0 3 * * *")
+    @Transactional
+    public void cleanupExpiredTokens() {
+        tokenRepository.deleteExpiredAndUsed(LocalDateTime.now());
+        log.info("Cleaned up expired password reset tokens");
+    }
+
+    private String generateToken() {
+        byte[] bytes = new byte[32];
+        SECURE_RANDOM.nextBytes(bytes);
+        return HexFormat.of().formatHex(bytes);
+    }
+
+    private void sendResetEmail(String to, String token, String appBaseUrl) {
+        if (mailSender == null) {
+            log.warn("Mail sender not configured — skipping password reset email to {}", to);
+            return;
+        }
+
+        String resetUrl = appBaseUrl + "/reset-password?token=" + token;
+        SimpleMailMessage message = new SimpleMailMessage();
+        message.setFrom(mailFrom);
+        message.setTo(to);
+        message.setSubject("Passwort zurücksetzen — Familienarchiv");
+        message.setText(
+                "Hallo,\n\n"
+                + "Sie haben eine Passwort-Zurücksetzung beantragt.\n\n"
+                + "Klicken Sie auf den folgenden Link, um Ihr Passwort zurückzusetzen:\n"
+                + resetUrl + "\n\n"
+                + "Der Link ist " + TOKEN_EXPIRY_HOURS + " Stunde(n) gültig.\n\n"
+                + "Falls Sie diese Anfrage nicht gestellt haben, ignorieren Sie diese E-Mail.\n\n"
+                + "Ihr Familienarchiv-Team");
+
+        try {
+            mailSender.send(message);
+            log.info("Password reset email sent to {}", to);
+        } catch (MailException e) {
+            log.error("Failed to send password reset email to {}: {}", to, e.getMessage());
+        }
+    }
+}

backend/src/main/java/org/raddatz/familienarchiv/service/UserService.java

@@ -3,6 +3,7 @@ package org.raddatz.familienarchiv.service;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 
+import org.raddatz.familienarchiv.dto.AdminUpdateUserRequest;
 import org.raddatz.familienarchiv.dto.ChangePasswordDTO;
 import org.raddatz.familienarchiv.dto.CreateUserRequest;
 import org.raddatz.familienarchiv.dto.UpdateProfileDTO;
@@ -54,6 +55,10 @@ public class UserService {
                     .email(request.getEmail())
                     .password(passwordEncoder.encode(request.getInitialPassword()))
                     .groups(groups)
+                    .firstName(request.getFirstName())
+                    .lastName(request.getLastName())
+                    .birthDate(request.getBirthDate())
+                    .contact(request.getContact())
                     .enabled(true)
                     .build();
         }
@@ -96,6 +101,39 @@ public class UserService {
         return userRepository.save(user);
     }
 
+    @Transactional
+    public AppUser adminUpdateUser(UUID id, AdminUpdateUserRequest dto) {
+        AppUser user = getById(id);
+
+        if (dto.getEmail() != null && !dto.getEmail().isBlank()) {
+            userRepository.findByEmail(dto.getEmail()).ifPresent(existing -> {
+                if (!existing.getId().equals(id)) {
+                    throw DomainException.conflict(ErrorCode.EMAIL_ALREADY_IN_USE,
+                            "E-Mail wird bereits von einem anderen Konto verwendet");
+                }
+            });
+            user.setEmail(dto.getEmail().trim());
+        } else if (dto.getEmail() != null && dto.getEmail().isBlank()) {
+            user.setEmail(null);
+        }
+
+        user.setFirstName(dto.getFirstName());
+        user.setLastName(dto.getLastName());
+        user.setBirthDate(dto.getBirthDate());
+        user.setContact(dto.getContact() == null || dto.getContact().isBlank() ? null : dto.getContact().trim());
+
+        if (dto.getNewPassword() != null && !dto.getNewPassword().isBlank()) {
+            user.setPassword(passwordEncoder.encode(dto.getNewPassword()));
+        }
+
+        if (dto.getGroupIds() != null) {
+            Set<UserGroup> groups = new HashSet<>(groupRepository.findAllById(dto.getGroupIds()));
+            user.setGroups(groups);
+        }
+
+        return userRepository.save(user);
+    }
+
     @Transactional
     public void changePassword(UUID userId, ChangePasswordDTO dto) {
         AppUser user = getById(userId);

backend/src/main/resources/application.yaml

@@ -24,6 +24,23 @@ spring:
       max-file-size: 50MB
       max-request-size: 50MB
 
+  mail:
+    host: ${MAIL_HOST:}
+    port: ${MAIL_PORT:587}
+    username: ${MAIL_USERNAME:}
+    password: ${MAIL_PASSWORD:}
+    properties:
+      mail:
+        smtp:
+          auth: true
+          starttls:
+            enable: true
+
+management:
+  health:
+    mail:
+      enabled: false
+
 springdoc:
   api-docs:
     enabled: false
@@ -38,6 +55,11 @@ app:
     bucket: ${S3_BUCKET_NAME}
     region: ${S3_REGION}
 
+  base-url: ${APP_BASE_URL:http://localhost:3000}
+
+  mail:
+    from: ${APP_MAIL_FROM:noreply@familienarchiv.local}
+
   admin:
     username: ${APP_ADMIN_USERNAME:admin}
     password: ${APP_ADMIN_PASSWORD:admin123}

backend/src/main/resources/db/migration/V8__add_password_reset_tokens.sql

@@ -0,0 +1,10 @@
+CREATE TABLE password_reset_tokens (
+    id          UUID         PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id     UUID         NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    token       VARCHAR(64)  NOT NULL UNIQUE,
+    expires_at  TIMESTAMP    NOT NULL,
+    used        BOOLEAN      NOT NULL DEFAULT FALSE,
+    created_at  TIMESTAMP    NOT NULL DEFAULT now()
+);
+
+CREATE INDEX idx_prt_token ON password_reset_tokens(token);

backend/src/main/resources/db/migration/V9__add_document_versions.sql

@@ -0,0 +1,11 @@
+CREATE TABLE document_versions (
+    id            UUID         PRIMARY KEY DEFAULT gen_random_uuid(),
+    document_id   UUID         NOT NULL REFERENCES documents(id) ON DELETE CASCADE,
+    saved_at      TIMESTAMP    NOT NULL DEFAULT now(),
+    editor_id     UUID         REFERENCES users(id) ON DELETE SET NULL,
+    editor_name   VARCHAR(200) NOT NULL,
+    snapshot      JSONB        NOT NULL,
+    changed_fields JSONB       NOT NULL DEFAULT '[]'
+);
+
+CREATE INDEX ON document_versions (document_id, saved_at DESC);

backend/src/test/java/org/raddatz/familienarchiv/controller/AdminControllerTest.java

@@ -0,0 +1,61 @@
+package org.raddatz.familienarchiv.controller;
+
+import org.junit.jupiter.api.Test;
+import org.raddatz.familienarchiv.config.SecurityConfig;
+import org.raddatz.familienarchiv.model.Document;
+import org.raddatz.familienarchiv.security.PermissionAspect;
+import org.raddatz.familienarchiv.service.CustomUserDetailsService;
+import org.raddatz.familienarchiv.service.DocumentService;
+import org.raddatz.familienarchiv.service.DocumentVersionService;
+import org.raddatz.familienarchiv.service.MassImportService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.aop.AopAutoConfiguration;
+import org.springframework.boot.webmvc.test.autoconfigure.WebMvcTest;
+import org.springframework.context.annotation.Import;
+import org.springframework.security.test.context.support.WithMockUser;
+import org.springframework.test.context.bean.override.mockito.MockitoBean;
+import org.springframework.test.web.servlet.MockMvc;
+
+import java.util.List;
+
+import static org.mockito.ArgumentMatchers.anyList;
+import static org.mockito.Mockito.when;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@WebMvcTest(AdminController.class)
+@Import({SecurityConfig.class, PermissionAspect.class, AopAutoConfiguration.class})
+class AdminControllerTest {
+
+    @Autowired MockMvc mockMvc;
+
+    @MockitoBean MassImportService massImportService;
+    @MockitoBean DocumentService documentService;
+    @MockitoBean DocumentVersionService documentVersionService;
+    @MockitoBean CustomUserDetailsService customUserDetailsService;
+
+    @Test
+    void backfillVersions_returns401_whenUnauthenticated() throws Exception {
+        mockMvc.perform(post("/api/admin/backfill-versions"))
+                .andExpect(status().isUnauthorized());
+    }
+
+    @Test
+    @WithMockUser(roles = "USER")
+    void backfillVersions_returns403_whenNotAdmin() throws Exception {
+        mockMvc.perform(post("/api/admin/backfill-versions"))
+                .andExpect(status().isForbidden());
+    }
+
+    @Test
+    @WithMockUser(authorities = "ADMIN")
+    void backfillVersions_returns200_withCount_whenAdmin() throws Exception {
+        when(documentService.getDocumentsWithoutVersions()).thenReturn(List.of(Document.builder().build()));
+        when(documentVersionService.backfillMissingVersions(anyList())).thenReturn(1);
+
+        mockMvc.perform(post("/api/admin/backfill-versions"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.count").value(1));
+    }
+}

backend/src/test/java/org/raddatz/familienarchiv/controller/DocumentControllerTest.java

@@ -1,10 +1,13 @@
 package org.raddatz.familienarchiv.controller;
 
 import org.junit.jupiter.api.Test;
+import org.raddatz.familienarchiv.dto.DocumentVersionSummary;
 import org.raddatz.familienarchiv.model.Document;
+import org.raddatz.familienarchiv.model.DocumentVersion;
 import org.raddatz.familienarchiv.security.PermissionAspect;
 import org.raddatz.familienarchiv.service.CustomUserDetailsService;
 import org.raddatz.familienarchiv.service.DocumentService;
+import org.raddatz.familienarchiv.service.DocumentVersionService;
 import org.raddatz.familienarchiv.service.FileService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.webmvc.test.autoconfigure.WebMvcTest;
@@ -15,13 +18,16 @@ import org.springframework.security.test.context.support.WithMockUser;
 import org.springframework.test.context.bean.override.mockito.MockitoBean;
 import org.springframework.test.web.servlet.MockMvc;
 
+import java.time.LocalDateTime;
 import java.util.Collections;
+import java.util.List;
 import java.util.UUID;
 
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.when;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.multipart;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
 @WebMvcTest(DocumentController.class)
@@ -31,6 +37,7 @@ class DocumentControllerTest {
     @Autowired MockMvc mockMvc;
 
     @MockitoBean DocumentService documentService;
+    @MockitoBean DocumentVersionService documentVersionService;
     @MockitoBean FileService fileService;
     @MockitoBean CustomUserDetailsService customUserDetailsService;
 
@@ -113,4 +120,48 @@ class DocumentControllerTest {
                         .with(req -> { req.setMethod("PUT"); return req; }))
                 .andExpect(status().isOk());
     }
+
+    // ─── GET /api/documents/{id}/versions ────────────────────────────────────
+
+    @Test
+    void getVersions_returns401_whenUnauthenticated() throws Exception {
+        mockMvc.perform(get("/api/documents/" + UUID.randomUUID() + "/versions"))
+                .andExpect(status().isUnauthorized());
+    }
+
+    @Test
+    @WithMockUser
+    void getVersions_returns200_whenAuthenticated() throws Exception {
+        UUID docId = UUID.randomUUID();
+        DocumentVersionSummary summary = new DocumentVersionSummary(
+                UUID.randomUUID(), LocalDateTime.now(), "Emma Müller", List.of("title"));
+        when(documentVersionService.getSummaries(docId)).thenReturn(List.of(summary));
+
+        mockMvc.perform(get("/api/documents/" + docId + "/versions"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$[0].editorName").value("Emma Müller"));
+    }
+
+    // ─── GET /api/documents/{id}/versions/{versionId} ────────────────────────
+
+    @Test
+    void getVersion_returns401_whenUnauthenticated() throws Exception {
+        mockMvc.perform(get("/api/documents/" + UUID.randomUUID() + "/versions/" + UUID.randomUUID()))
+                .andExpect(status().isUnauthorized());
+    }
+
+    @Test
+    @WithMockUser
+    void getVersion_returns200_whenAuthenticated() throws Exception {
+        UUID docId = UUID.randomUUID();
+        UUID versionId = UUID.randomUUID();
+        DocumentVersion version = DocumentVersion.builder()
+                .id(versionId).documentId(docId).savedAt(LocalDateTime.now())
+                .editorName("Otto").snapshot("{\"title\":\"Brief\"}").changedFields("[]").build();
+        when(documentVersionService.getVersion(docId, versionId)).thenReturn(version);
+
+        mockMvc.perform(get("/api/documents/" + docId + "/versions/" + versionId))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.editorName").value("Otto"));
+    }
 }

backend/src/test/java/org/raddatz/familienarchiv/service/DocumentServiceTest.java

@@ -8,6 +8,7 @@ import org.mockito.junit.jupiter.MockitoExtension;
 import org.raddatz.familienarchiv.dto.DocumentUpdateDTO;
 import org.raddatz.familienarchiv.exception.DomainException;
 import org.raddatz.familienarchiv.model.Document;
+import org.raddatz.familienarchiv.model.DocumentStatus;
 import org.raddatz.familienarchiv.model.Tag;
 import org.raddatz.familienarchiv.repository.DocumentRepository;
 
@@ -29,6 +30,7 @@ class DocumentServiceTest {
     @Mock PersonService personService;
     @Mock FileService fileService;
     @Mock TagService tagService;
+    @Mock DocumentVersionService documentVersionService;
     @InjectMocks DocumentService documentService;
 
     // ─── getDocumentById ──────────────────────────────────────────────────────
@@ -132,4 +134,37 @@ class DocumentServiceTest {
 
         assertThat(documentService.getDocumentsByReceiver(receiverId)).containsExactly(doc);
     }
+
+    // ─── versioning ───────────────────────────────────────────────────────────
+
+    @Test
+    void createDocument_recordsVersionAfterSave() throws Exception {
+        DocumentUpdateDTO dto = new DocumentUpdateDTO();
+        dto.setTitle("Neuer Brief");
+
+        Document saved = Document.builder()
+                .id(UUID.randomUUID()).title("Neuer Brief")
+                .originalFilename("Neuer Brief").status(DocumentStatus.PLACEHOLDER)
+                .build();
+        when(documentRepository.save(any())).thenReturn(saved);
+        when(documentRepository.findById(any())).thenReturn(Optional.of(saved));
+
+        documentService.createDocument(dto, null);
+
+        verify(documentVersionService, atLeastOnce()).recordVersion(any(Document.class));
+    }
+
+    @Test
+    void updateDocument_recordsVersionAfterSave() throws Exception {
+        UUID id = UUID.randomUUID();
+        Document existing = Document.builder()
+                .id(id).title("Alt").originalFilename("alt.pdf")
+                .status(DocumentStatus.PLACEHOLDER).build();
+        when(documentRepository.findById(id)).thenReturn(Optional.of(existing));
+        when(documentRepository.save(any())).thenReturn(existing);
+
+        documentService.updateDocument(id, new DocumentUpdateDTO(), null);
+
+        verify(documentVersionService).recordVersion(any(Document.class));
+    }
 }

backend/src/test/java/org/raddatz/familienarchiv/service/DocumentVersionServiceTest.java

@@ -0,0 +1,397 @@
+package org.raddatz.familienarchiv.service;
+
+import tools.jackson.databind.ObjectMapper;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.raddatz.familienarchiv.dto.DocumentVersionSummary;
+import org.raddatz.familienarchiv.exception.DomainException;
+import org.raddatz.familienarchiv.model.AppUser;
+import org.raddatz.familienarchiv.model.Document;
+import org.raddatz.familienarchiv.model.DocumentVersion;
+import org.raddatz.familienarchiv.model.Person;
+import org.raddatz.familienarchiv.model.Tag;
+import org.raddatz.familienarchiv.repository.DocumentVersionRepository;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.context.SecurityContextHolder;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.*;
+
+@ExtendWith(MockitoExtension.class)
+class DocumentVersionServiceTest {
+
+    @Mock DocumentVersionRepository versionRepository;
+    @Mock UserService userService;
+
+    private DocumentVersionService versionService;
+
+    @BeforeEach
+    void setUp() {
+        versionService = new DocumentVersionService(versionRepository, userService, new ObjectMapper());
+    }
+
+    @BeforeEach
+    void clearSecurityContext() {
+        SecurityContextHolder.clearContext();
+    }
+
+    // ─── recordVersion — editor name ─────────────────────────────────────────
+
+    @Test
+    void recordVersion_usesFirstAndLastName_whenBothPresent() {
+        authenticateAs("emma");
+        when(userService.findByUsername("emma")).thenReturn(
+                AppUser.builder().id(UUID.randomUUID()).username("emma")
+                        .firstName("Emma").lastName("Müller").build());
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(any())).thenReturn(List.of());
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        versionService.recordVersion(minimalDocument());
+
+        ArgumentCaptor<DocumentVersion> captor = ArgumentCaptor.forClass(DocumentVersion.class);
+        verify(versionRepository).save(captor.capture());
+        assertThat(captor.getValue().getEditorName()).isEqualTo("Emma Müller");
+    }
+
+    @Test
+    void recordVersion_usesUsername_whenNamesAreBlank() {
+        authenticateAs("otto99");
+        when(userService.findByUsername("otto99")).thenReturn(
+                AppUser.builder().id(UUID.randomUUID()).username("otto99")
+                        .firstName(null).lastName(null).build());
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(any())).thenReturn(List.of());
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        versionService.recordVersion(minimalDocument());
+
+        ArgumentCaptor<DocumentVersion> captor = ArgumentCaptor.forClass(DocumentVersion.class);
+        verify(versionRepository).save(captor.capture());
+        assertThat(captor.getValue().getEditorName()).isEqualTo("otto99");
+    }
+
+    // ─── recordVersion — snapshot ─────────────────────────────────────────────
+
+    @Test
+    void recordVersion_savesSnapshotContainingTitle() {
+        authenticateAs("user1");
+        when(userService.findByUsername("user1")).thenReturn(stubUser("user1"));
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(any())).thenReturn(List.of());
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        Document doc = Document.builder()
+                .id(UUID.randomUUID())
+                .title("Wichtiger Brief")
+                .originalFilename("brief.pdf")
+                .build();
+
+        versionService.recordVersion(doc);
+
+        ArgumentCaptor<DocumentVersion> captor = ArgumentCaptor.forClass(DocumentVersion.class);
+        verify(versionRepository).save(captor.capture());
+        assertThat(captor.getValue().getSnapshot()).contains("Wichtiger Brief");
+        assertThat(captor.getValue().getDocumentId()).isEqualTo(doc.getId());
+    }
+
+    // ─── recordVersion — changedFields ────────────────────────────────────────
+
+    @Test
+    void recordVersion_changedFieldsIsEmpty_forFirstVersion() {
+        authenticateAs("user1");
+        when(userService.findByUsername("user1")).thenReturn(stubUser("user1"));
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(any())).thenReturn(List.of());
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        versionService.recordVersion(minimalDocument());
+
+        ArgumentCaptor<DocumentVersion> captor = ArgumentCaptor.forClass(DocumentVersion.class);
+        verify(versionRepository).save(captor.capture());
+        assertThat(captor.getValue().getChangedFields()).isEqualTo("[]");
+    }
+
+    @Test
+    void recordVersion_includesTitleInChangedFields_whenTitleChanged() throws Exception {
+        authenticateAs("user1");
+        when(userService.findByUsername("user1")).thenReturn(stubUser("user1"));
+
+        ObjectMapper mapper = new ObjectMapper();
+        Document oldDoc = Document.builder().id(UUID.randomUUID()).title("Alt").build();
+        String oldSnapshot = mapper.writeValueAsString(oldDoc);
+
+        DocumentVersion previous = DocumentVersion.builder()
+                .id(UUID.randomUUID())
+                .documentId(oldDoc.getId())
+                .snapshot(oldSnapshot)
+                .changedFields("[]")
+                .savedAt(LocalDateTime.now().minusMinutes(5))
+                .editorName("user1")
+                .build();
+
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(oldDoc.getId()))
+                .thenReturn(List.of(previous));
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        Document updated = Document.builder().id(oldDoc.getId()).title("Neu").build();
+        versionService.recordVersion(updated);
+
+        ArgumentCaptor<DocumentVersion> captor = ArgumentCaptor.forClass(DocumentVersion.class);
+        verify(versionRepository).save(captor.capture());
+        assertThat(captor.getValue().getChangedFields()).contains("title");
+    }
+
+    @Test
+    void recordVersion_doesNotIncludeUnchangedFields_inChangedFields() throws Exception {
+        authenticateAs("user1");
+        when(userService.findByUsername("user1")).thenReturn(stubUser("user1"));
+
+        ObjectMapper mapper = new ObjectMapper();
+        UUID docId = UUID.randomUUID();
+        Document oldDoc = Document.builder().id(docId).title("Same").location("Berlin").build();
+        String oldSnapshot = mapper.writeValueAsString(oldDoc);
+
+        DocumentVersion previous = DocumentVersion.builder()
+                .id(UUID.randomUUID()).documentId(docId).snapshot(oldSnapshot)
+                .changedFields("[]").savedAt(LocalDateTime.now().minusMinutes(5))
+                .editorName("user1").build();
+
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(docId)).thenReturn(List.of(previous));
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        Document updated = Document.builder().id(docId).title("Same").location("Hamburg").build();
+        versionService.recordVersion(updated);
+
+        ArgumentCaptor<DocumentVersion> captor = ArgumentCaptor.forClass(DocumentVersion.class);
+        verify(versionRepository).save(captor.capture());
+        assertThat(captor.getValue().getChangedFields()).contains("location");
+        assertThat(captor.getValue().getChangedFields()).doesNotContain("title");
+    }
+
+    @Test
+    void recordVersion_tracksSenderChange() throws Exception {
+        authenticateAs("user1");
+        when(userService.findByUsername("user1")).thenReturn(stubUser("user1"));
+
+        ObjectMapper mapper = new ObjectMapper();
+        UUID docId = UUID.randomUUID();
+        Person oldSender = Person.builder().id(UUID.randomUUID()).firstName("A").lastName("B").build();
+        Document oldDoc = Document.builder().id(docId).title("T").sender(oldSender).build();
+        String oldSnapshot = mapper.writeValueAsString(oldDoc);
+
+        DocumentVersion previous = DocumentVersion.builder()
+                .id(UUID.randomUUID()).documentId(docId).snapshot(oldSnapshot)
+                .changedFields("[]").savedAt(LocalDateTime.now().minusMinutes(5))
+                .editorName("user1").build();
+
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(docId)).thenReturn(List.of(previous));
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        Person newSender = Person.builder().id(UUID.randomUUID()).firstName("C").lastName("D").build();
+        Document updated = Document.builder().id(docId).title("T").sender(newSender).build();
+        versionService.recordVersion(updated);
+
+        ArgumentCaptor<DocumentVersion> captor = ArgumentCaptor.forClass(DocumentVersion.class);
+        verify(versionRepository).save(captor.capture());
+        assertThat(captor.getValue().getChangedFields()).contains("sender");
+    }
+
+    @Test
+    void recordVersion_tracksReceiverChange() throws Exception {
+        authenticateAs("user1");
+        when(userService.findByUsername("user1")).thenReturn(stubUser("user1"));
+
+        ObjectMapper mapper = new ObjectMapper();
+        UUID docId = UUID.randomUUID();
+        Person receiver1 = Person.builder().id(UUID.randomUUID()).firstName("A").lastName("B").build();
+        Document oldDoc = Document.builder().id(docId).title("T").receivers(Set.of(receiver1)).build();
+        String oldSnapshot = mapper.writeValueAsString(oldDoc);
+
+        DocumentVersion previous = DocumentVersion.builder()
+                .id(UUID.randomUUID()).documentId(docId).snapshot(oldSnapshot)
+                .changedFields("[]").savedAt(LocalDateTime.now().minusMinutes(5))
+                .editorName("user1").build();
+
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(docId)).thenReturn(List.of(previous));
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        Document updated = Document.builder().id(docId).title("T").receivers(Set.of()).build();
+        versionService.recordVersion(updated);
+
+        ArgumentCaptor<DocumentVersion> captor = ArgumentCaptor.forClass(DocumentVersion.class);
+        verify(versionRepository).save(captor.capture());
+        assertThat(captor.getValue().getChangedFields()).contains("receivers");
+    }
+
+    @Test
+    void recordVersion_tracksTagChange() throws Exception {
+        authenticateAs("user1");
+        when(userService.findByUsername("user1")).thenReturn(stubUser("user1"));
+
+        ObjectMapper mapper = new ObjectMapper();
+        UUID docId = UUID.randomUUID();
+        Tag tag = Tag.builder().id(UUID.randomUUID()).name("Familie").build();
+        Document oldDoc = Document.builder().id(docId).title("T").tags(Set.of(tag)).build();
+        String oldSnapshot = mapper.writeValueAsString(oldDoc);
+
+        DocumentVersion previous = DocumentVersion.builder()
+                .id(UUID.randomUUID()).documentId(docId).snapshot(oldSnapshot)
+                .changedFields("[]").savedAt(LocalDateTime.now().minusMinutes(5))
+                .editorName("user1").build();
+
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(docId)).thenReturn(List.of(previous));
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        Document updated = Document.builder().id(docId).title("T").tags(Set.of()).build();
+        versionService.recordVersion(updated);
+
+        ArgumentCaptor<DocumentVersion> captor = ArgumentCaptor.forClass(DocumentVersion.class);
+        verify(versionRepository).save(captor.capture());
+        assertThat(captor.getValue().getChangedFields()).contains("tags");
+    }
+
+    // ─── getSummaries ─────────────────────────────────────────────────────────
+
+    @Test
+    void getSummaries_returnsListWithParsedChangedFields() {
+        UUID docId = UUID.randomUUID();
+        DocumentVersion v = DocumentVersion.builder()
+                .id(UUID.randomUUID()).documentId(docId)
+                .savedAt(LocalDateTime.now()).editorName("Emma Müller")
+                .snapshot("{}").changedFields("[\"title\",\"location\"]")
+                .build();
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(docId)).thenReturn(List.of(v));
+
+        List<DocumentVersionSummary> summaries = versionService.getSummaries(docId);
+
+        assertThat(summaries).hasSize(1);
+        assertThat(summaries.get(0).editorName()).isEqualTo("Emma Müller");
+        assertThat(summaries.get(0).changedFields()).containsExactlyInAnyOrder("title", "location");
+        assertThat(summaries.get(0).id()).isEqualTo(v.getId());
+    }
+
+    // ─── getVersion ───────────────────────────────────────────────────────────
+
+    @Test
+    void getVersion_returnsVersion_whenFound() {
+        UUID docId = UUID.randomUUID();
+        UUID versionId = UUID.randomUUID();
+        DocumentVersion v = DocumentVersion.builder()
+                .id(versionId).documentId(docId).snapshot("{}")
+                .changedFields("[]").editorName("x").savedAt(LocalDateTime.now()).build();
+        when(versionRepository.findByIdAndDocumentId(versionId, docId)).thenReturn(Optional.of(v));
+
+        assertThat(versionService.getVersion(docId, versionId)).isEqualTo(v);
+    }
+
+    @Test
+    void getVersion_throwsNotFound_whenVersionBelongsToOtherDocument() {
+        UUID docId = UUID.randomUUID();
+        UUID versionId = UUID.randomUUID();
+        when(versionRepository.findByIdAndDocumentId(versionId, docId)).thenReturn(Optional.empty());
+
+        assertThatThrownBy(() -> versionService.getVersion(docId, versionId))
+                .isInstanceOf(DomainException.class);
+    }
+
+    // ─── backfillMissingVersions ──────────────────────────────────────────────
+
+    @Test
+    void backfill_createsVersion_withEditorNameDatenimport() {
+        Document doc = minimalDocument();
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(doc.getId())).thenReturn(List.of());
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        versionService.backfillMissingVersions(List.of(doc));
+
+        ArgumentCaptor<DocumentVersion> captor = ArgumentCaptor.forClass(DocumentVersion.class);
+        verify(versionRepository).save(captor.capture());
+        assertThat(captor.getValue().getEditorName()).isEqualTo("Datenimport");
+    }
+
+    @Test
+    void backfill_usesDocumentCreatedAt_asSavedAt() {
+        LocalDateTime createdAt = LocalDateTime.of(2020, 3, 15, 10, 0);
+        Document doc = Document.builder()
+                .id(UUID.randomUUID()).title("T").createdAt(createdAt).build();
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(doc.getId())).thenReturn(List.of());
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        versionService.backfillMissingVersions(List.of(doc));
+
+        ArgumentCaptor<DocumentVersion> captor = ArgumentCaptor.forClass(DocumentVersion.class);
+        verify(versionRepository).save(captor.capture());
+        assertThat(captor.getValue().getSavedAt()).isEqualTo(createdAt);
+    }
+
+    @Test
+    void backfill_setsChangedFieldsEmpty() {
+        Document doc = minimalDocument();
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(doc.getId())).thenReturn(List.of());
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        versionService.backfillMissingVersions(List.of(doc));
+
+        ArgumentCaptor<DocumentVersion> captor = ArgumentCaptor.forClass(DocumentVersion.class);
+        verify(versionRepository).save(captor.capture());
+        assertThat(captor.getValue().getChangedFields()).isEqualTo("[]");
+    }
+
+    @Test
+    void backfill_skipsDocuments_thatAlreadyHaveVersions() {
+        Document doc = minimalDocument();
+        DocumentVersion existing = DocumentVersion.builder()
+                .id(UUID.randomUUID()).documentId(doc.getId()).snapshot("{}")
+                .changedFields("[]").editorName("user").savedAt(LocalDateTime.now()).build();
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(doc.getId())).thenReturn(List.of(existing));
+
+        int count = versionService.backfillMissingVersions(List.of(doc));
+
+        verify(versionRepository, never()).save(any());
+        assertThat(count).isZero();
+    }
+
+    @Test
+    void backfill_returnsCountOfCreatedVersions() {
+        Document d1 = minimalDocument();
+        Document d2 = minimalDocument();
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(d1.getId())).thenReturn(List.of());
+        when(versionRepository.findByDocumentIdOrderBySavedAtAsc(d2.getId())).thenReturn(List.of());
+        when(versionRepository.save(any())).thenAnswer(inv -> inv.getArgument(0));
+
+        int count = versionService.backfillMissingVersions(List.of(d1, d2));
+
+        assertThat(count).isEqualTo(2);
+    }
+
+    // ─── helpers ──────────────────────────────────────────────────────────────
+
+    private void authenticateAs(String username) {
+        SecurityContextHolder.getContext().setAuthentication(
+                new UsernamePasswordAuthenticationToken(username, null, List.of()));
+    }
+
+    private AppUser stubUser(String username) {
+        return AppUser.builder().id(UUID.randomUUID()).username(username)
+                .firstName(null).lastName(null).build();
+    }
+
+    private Document minimalDocument() {
+        return Document.builder()
+                .id(UUID.randomUUID())
+                .title("Test")
+                .originalFilename("test.pdf")
+                .documentDate(LocalDate.of(1940, 5, 1))
+                .build();
+    }
+}

backend/src/test/java/org/raddatz/familienarchiv/service/PasswordResetServiceTest.java

@@ -0,0 +1,126 @@
+package org.raddatz.familienarchiv.service;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.argThat;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.time.LocalDateTime;
+import java.util.Optional;
+import java.util.UUID;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.raddatz.familienarchiv.dto.ResetPasswordRequest;
+import org.raddatz.familienarchiv.exception.DomainException;
+import org.raddatz.familienarchiv.model.AppUser;
+import org.raddatz.familienarchiv.model.PasswordResetToken;
+import org.raddatz.familienarchiv.repository.AppUserRepository;
+import org.raddatz.familienarchiv.repository.PasswordResetTokenRepository;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.security.crypto.password.PasswordEncoder;
+
+@ExtendWith(MockitoExtension.class)
+class PasswordResetServiceTest {
+
+    @Mock AppUserRepository userRepository;
+    @Mock PasswordResetTokenRepository tokenRepository;
+    @Mock PasswordEncoder passwordEncoder;
+    @Mock JavaMailSender mailSender;
+    @InjectMocks PasswordResetService service;
+
+    private AppUser makeUser(String email) {
+        return AppUser.builder()
+                .id(UUID.randomUUID())
+                .username("testuser")
+                .email(email)
+                .password("hashed")
+                .build();
+    }
+
+    // ─── requestReset ─────────────────────────────────────────────────────────
+
+    @Test
+    void requestReset_savesTokenForKnownEmail() {
+        AppUser user = makeUser("user@example.com");
+        when(userRepository.findByEmail("user@example.com")).thenReturn(Optional.of(user));
+
+        service.requestReset("user@example.com", "http://localhost:3000");
+
+        verify(tokenRepository).save(argThat(t ->
+                t.getUser().equals(user)
+                        && t.getToken().length() == 64
+                        && !t.isUsed()));
+    }
+
+    @Test
+    void requestReset_doesNothingForUnknownEmail() {
+        when(userRepository.findByEmail("ghost@example.com")).thenReturn(Optional.empty());
+
+        service.requestReset("ghost@example.com", "http://localhost:3000");
+
+        verify(tokenRepository, never()).save(any());
+    }
+
+    // ─── resetPassword ────────────────────────────────────────────────────────
+
+    @Test
+    void resetPassword_updatesPasswordForValidToken() {
+        AppUser user = makeUser("user@example.com");
+        PasswordResetToken token = PasswordResetToken.builder()
+                .id(UUID.randomUUID())
+                .token("validtoken123")
+                .user(user)
+                .expiresAt(LocalDateTime.now().plusHours(1))
+                .used(false)
+                .build();
+        when(tokenRepository.findByToken("validtoken123")).thenReturn(Optional.of(token));
+        when(passwordEncoder.encode("newpass")).thenReturn("hashed-newpass");
+
+        ResetPasswordRequest req = new ResetPasswordRequest();
+        req.setToken("validtoken123");
+        req.setNewPassword("newpass");
+        service.resetPassword(req);
+
+        verify(passwordEncoder).encode("newpass");
+        verify(userRepository).save(argThat(u -> u.getPassword().equals("hashed-newpass")));
+        assertThat(token.isUsed()).isTrue();
+    }
+
+    @Test
+    void resetPassword_throwsForExpiredToken() {
+        AppUser user = makeUser("user@example.com");
+        PasswordResetToken token = PasswordResetToken.builder()
+                .token("expiredtoken")
+                .user(user)
+                .expiresAt(LocalDateTime.now().minusMinutes(1))
+                .used(false)
+                .build();
+        when(tokenRepository.findByToken("expiredtoken")).thenReturn(Optional.of(token));
+
+        ResetPasswordRequest req = new ResetPasswordRequest();
+        req.setToken("expiredtoken");
+        req.setNewPassword("newpass");
+
+        assertThatThrownBy(() -> service.resetPassword(req))
+                .isInstanceOf(DomainException.class);
+    }
+
+    @Test
+    void resetPassword_throwsForUnknownToken() {
+        when(tokenRepository.findByToken("nosuchtoken")).thenReturn(Optional.empty());
+
+        ResetPasswordRequest req = new ResetPasswordRequest();
+        req.setToken("nosuchtoken");
+        req.setNewPassword("newpass");
+
+        assertThatThrownBy(() -> service.resetPassword(req))
+                .isInstanceOf(DomainException.class);
+    }
+}

docker-compose.yml

@@ -58,6 +58,19 @@ services:
     networks:
       - archive-net
 
+  # --- Mail catcher: Mailpit (dev only) ---
+  # Catches all outgoing emails and displays them in a web UI.
+  # Access the inbox at http://localhost:${PORT_MAILPIT_UI} after starting the stack.
+  mailpit:
+    image: axllent/mailpit:latest
+    container_name: archive-mailpit
+    restart: unless-stopped
+    ports:
+      - "${PORT_MAILPIT_UI:-8025}:8025"   # Web UI
+      - "${PORT_MAILPIT_SMTP:-1025}:1025" # SMTP
+    networks:
+      - archive-net
+
   # --- Backend: Spring Boot ---
   backend:
     build:
@@ -74,6 +87,8 @@ services:
         condition: service_healthy
       minio:
         condition: service_healthy
+      mailpit:
+        condition: service_started
     environment:
       SPRING_DATASOURCE_URL: jdbc:postgresql://db:5432/${POSTGRES_DB}
       SPRING_DATASOURCE_USERNAME: ${POSTGRES_USER}
@@ -83,6 +98,16 @@ services:
       S3_SECRET_KEY: ${MINIO_ROOT_PASSWORD}
       S3_BUCKET_NAME: ${MINIO_DEFAULT_BUCKETS}
       S3_REGION: us-east-1
+      APP_BASE_URL: ${APP_BASE_URL:-http://localhost:3000}
+      # Defaults to the local Mailpit catcher — override in .env for production SMTP
+      MAIL_HOST: ${MAIL_HOST:-mailpit}
+      MAIL_PORT: ${MAIL_PORT:-1025}
+      MAIL_USERNAME: ${MAIL_USERNAME:-}
+      MAIL_PASSWORD: ${MAIL_PASSWORD:-}
+      APP_MAIL_FROM: ${APP_MAIL_FROM:-noreply@familienarchiv.local}
+      # Mailpit needs no auth or STARTTLS; production SMTP overrides these via .env
+      SPRING_MAIL_PROPERTIES_MAIL_SMTP_AUTH: ${MAIL_SMTP_AUTH:-false}
+      SPRING_MAIL_PROPERTIES_MAIL_SMTP_STARTTLS_ENABLE: ${MAIL_STARTTLS_ENABLE:-false}
     ports:
       - "${PORT_BACKEND}:8080"
     networks:

docs/mail.md

@@ -0,0 +1,96 @@
+# Mail configuration
+
+Familienarchiv uses Spring Mail to send password reset emails. The mail sender is **optional** — if no SMTP host is configured, the feature degrades gracefully: a reset token is still created in the database, but no email is sent and a warning is logged.
+
+## How it works in each environment
+
+| Environment | Default behaviour |
+|---|---|
+| `docker-compose up` (dev) | Mailpit catches all emails — nothing leaves your machine |
+| CI | No mail host set — emails are silently skipped, tokens tested via the `/api/auth/reset-token-for-test` endpoint |
+| Production | Real SMTP server configured via environment variables |
+
+---
+
+## Development — Mailpit
+
+[Mailpit](https://github.com/axllent/mailpit) is included in `docker-compose.yml` as a local mail catcher. It accepts SMTP connections from the backend and displays all caught emails in a web inbox. No credentials or external network access required.
+
+**Start the stack as usual:**
+
+```bash
+docker-compose up -d
+```
+
+**Open the inbox:**
+
+```
+http://localhost:8025
+```
+
+All password reset emails appear here. Copy the reset link from the email body and open it in your browser to complete the flow end-to-end locally.
+
+**Ports (configurable in `.env`):**
+
+| Variable | Default | Purpose |
+|---|---|---|
+| `PORT_MAILPIT_UI` | `8025` | Mailpit web inbox |
+| `PORT_MAILPIT_SMTP` | `1025` | SMTP port (used internally by the backend) |
+
+---
+
+## Production — real SMTP
+
+To send real emails, set the following variables in your `.env` file (or as host environment variables). The `MAIL_HOST` variable is the switch — leaving it empty disables outgoing mail entirely.
+
+```dotenv
+# Required
+APP_BASE_URL=https://your-domain.example.com   # Base URL inserted into reset links
+MAIL_HOST=smtp.example.com
+MAIL_PORT=587
+MAIL_USERNAME=your-smtp-user
+MAIL_PASSWORD=your-smtp-password
+
+# Optional — adjust if your provider uses different settings
+MAIL_SMTP_AUTH=true          # default: false (Mailpit needs false)
+MAIL_STARTTLS_ENABLE=true    # default: false (Mailpit needs false)
+APP_MAIL_FROM=noreply@your-domain.example.com
+```
+
+**Common provider settings:**
+
+| Provider | Host | Port | Auth | STARTTLS |
+|---|---|---|---|---|
+| Gmail (App Password) | `smtp.gmail.com` | `587` | `true` | `true` |
+| Mailgun | `smtp.mailgun.org` | `587` | `true` | `true` |
+| Hetzner | `mail.your-server.de` | `587` | `true` | `true` |
+| Self-hosted Postfix | your server IP/hostname | `587` | `true` | `true` |
+
+> **Gmail note:** You must use an [App Password](https://support.google.com/accounts/answer/185833), not your regular account password. 2-Step Verification must be enabled on the account.
+
+---
+
+## Environment variable reference
+
+All variables have safe defaults so the app starts without any mail configuration.
+
+| Variable | Default (docker-compose) | Description |
+|---|---|---|
+| `MAIL_HOST` | `mailpit` | SMTP hostname. Empty string disables mail entirely. |
+| `MAIL_PORT` | `1025` | SMTP port. |
+| `MAIL_USERNAME` | *(empty)* | SMTP username. Leave empty if your server needs no auth. |
+| `MAIL_PASSWORD` | *(empty)* | SMTP password. |
+| `MAIL_SMTP_AUTH` | `false` | Enable SMTP authentication (`true` for real servers). |
+| `MAIL_STARTTLS_ENABLE` | `false` | Enable STARTTLS (`true` for real servers on port 587). |
+| `APP_MAIL_FROM` | `noreply@familienarchiv.local` | The `From:` address on outgoing emails. |
+| `APP_BASE_URL` | `http://localhost:3000` | Base URL prepended to password reset links. |
+
+---
+
+## Disabling mail entirely
+
+Set `MAIL_HOST` to an empty string. Spring Boot will not create a mail sender bean and no emails will be sent. Password reset tokens are still written to the database — useful if you want to test the reset flow via the API directly.
+
+```dotenv
+MAIL_HOST=
+```

frontend/e2e/admin.spec.ts

@@ -0,0 +1,218 @@
+import { test, expect, type Browser } from '@playwright/test';
+
+/**
+ * Admin panel E2E tests.
+ *
+ * Reads top-to-bottom as a complete admin journey:
+ * 1. Admin opens the dashboard and sees all three management tabs.
+ * 2. Admin creates a group for read-only access.
+ * 3. Admin creates a new user in that group.
+ * 4. Admin edits the user's profile.
+ * 5. Admin resets the user's password without knowing their current password.
+ * 6. The user can log in with the admin-set password.
+ * 7. Admin deletes the user.
+ * 8. Admin deletes the test group.
+ * 9. Admin renames a tag and renames it back.
+ *
+ * Steps 2–8 form a self-contained lifecycle: everything created in this suite
+ * is also deleted, leaving the database in its original state.
+ */
+
+// ── Dashboard ─────────────────────────────────────────────────────────────────
+
+test.describe('Admin dashboard', () => {
+	test('admin navigates to /admin and sees the three management tabs', async ({ page }) => {
+		await page.goto('/admin');
+		await page.waitForSelector('[data-hydrated]');
+
+		await expect(page.getByRole('button', { name: 'Benutzer', exact: true })).toBeVisible();
+		await expect(page.getByRole('button', { name: 'Gruppen', exact: true })).toBeVisible();
+		await expect(page.getByRole('button', { name: 'Schlagworte', exact: true })).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/admin-dashboard.png' });
+	});
+});
+
+// ── Group lifecycle ────────────────────────────────────────────────────────────
+
+test.describe('Admin — group management', () => {
+	test('admin creates a new group "E2E Leser" with READ_ALL permission', async ({ page }) => {
+		await page.goto('/admin');
+		await page.waitForSelector('[data-hydrated]');
+
+		// Switch to the Groups tab
+		await page.getByRole('button', { name: 'Gruppen', exact: true }).click();
+
+		await page.getByPlaceholder('Gruppenname (z.B. Editoren)').fill('E2E Leser');
+
+		// No permission checkboxes checked — READ_ALL is handled at application level
+		// (a group with no permissions gets read-only access by default in the UI)
+
+		await page.getByRole('button', { name: /Erstellen/i }).click();
+
+		await expect(page.getByRole('cell', { name: 'E2E Leser', exact: true })).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/admin-group-created.png' });
+	});
+});
+
+// ── User lifecycle ─────────────────────────────────────────────────────────────
+
+test.describe('Admin — user lifecycle', () => {
+	test('admin creates user "e2e-testuser" and they appear in the user list', async ({ page }) => {
+		await page.goto('/admin/users/new');
+		await page.waitForSelector('[data-hydrated]');
+
+		await page.locator('input[name="username"]').fill('e2e-testuser');
+		await page.locator('input[name="password"]').fill('InitPass123!');
+
+		// Assign to the group we just created
+		const groupLabel = page.locator('label').filter({ hasText: 'E2E Leser' });
+		if ((await groupLabel.count()) > 0) {
+			await groupLabel.locator('input[type="checkbox"]').check();
+		}
+
+		await page.getByRole('button', { name: /Erstellen/i }).click();
+
+		// Redirected back to /admin — user appears in the table
+		await expect(page).toHaveURL('/admin');
+		await expect(page.getByRole('cell', { name: 'e2e-testuser', exact: true })).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/admin-user-created.png' });
+	});
+
+	test('admin opens the edit page and updates the user first name', async ({ page }) => {
+		await page.goto('/admin');
+		await page.waitForSelector('[data-hydrated]');
+
+		// Click the edit link for the test user
+		const userRow = page.locator('tr').filter({ hasText: 'e2e-testuser' });
+		await userRow.getByRole('link', { name: /Bearbeiten/i }).click();
+
+		await expect(page).toHaveURL(/\/admin\/users\/.+/);
+		await expect(
+			page.getByRole('heading', { name: /Benutzer bearbeiten: e2e-testuser/i })
+		).toBeVisible();
+
+		await page.locator('input[name="firstName"]').fill('E2E');
+		await page.locator('input[name="lastName"]').fill('Testuser');
+
+		await page.getByRole('button', { name: /Speichern/i }).click();
+
+		await expect(page.getByText('Änderungen gespeichert.')).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/admin-user-edited.png' });
+	});
+
+	test('admin sets a new password without entering the current password', async ({ page }) => {
+		await page.goto('/admin');
+		await page.waitForSelector('[data-hydrated]');
+
+		const userRow = page.locator('tr').filter({ hasText: 'e2e-testuser' });
+		await userRow.getByRole('link', { name: /Bearbeiten/i }).click();
+
+		// Password fields — no current password field on the admin edit form
+		await page.locator('input[name="newPassword"]').fill('AdminSet456!');
+		await page.locator('input[name="confirmPassword"]').fill('AdminSet456!');
+
+		await page.getByRole('button', { name: /Speichern/i }).click();
+
+		await expect(page.getByText('Änderungen gespeichert.')).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/admin-user-password-reset.png' });
+	});
+
+	test('the user can log in with the admin-set password', async ({ browser }) => {
+		// Open a completely separate browser context — no shared session cookies
+		const freshCtx = await (browser as Browser).newContext({
+			storageState: { cookies: [], origins: [] }
+		});
+		const freshPage = await freshCtx.newPage();
+
+		await freshPage.goto('/login');
+		await freshPage.getByLabel('Benutzername').fill('e2e-testuser');
+		await freshPage.getByLabel('Passwort').fill('AdminSet456!');
+		await freshPage.getByRole('button', { name: 'Anmelden' }).click();
+
+		await expect(freshPage).toHaveURL('/');
+		await freshPage.screenshot({ path: 'test-results/e2e/admin-user-login-new-password.png' });
+
+		await freshCtx.close();
+	});
+
+	test('admin deletes the test user and they disappear from the list', async ({ page }) => {
+		await page.goto('/admin');
+		await page.waitForSelector('[data-hydrated]');
+
+		const userRow = page.locator('tr').filter({ hasText: 'e2e-testuser' });
+
+		// The delete button triggers a window.confirm() dialog
+		page.once('dialog', (dialog) => dialog.accept());
+		await userRow.getByTitle('Benutzer löschen').click();
+
+		await expect(page.getByRole('cell', { name: 'e2e-testuser', exact: true })).not.toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/admin-user-deleted.png' });
+	});
+});
+
+// ── Group cleanup ──────────────────────────────────────────────────────────────
+
+test.describe('Admin — group cleanup', () => {
+	test('admin deletes the "E2E Leser" group', async ({ page }) => {
+		await page.goto('/admin');
+		await page.waitForSelector('[data-hydrated]');
+
+		await page.getByRole('button', { name: 'Gruppen' }).click();
+
+		const groupRow = page.locator('tr').filter({ hasText: 'E2E Leser' });
+
+		page.once('dialog', (dialog) => dialog.accept());
+		await groupRow.getByTitle('Löschen').click();
+
+		await expect(page.getByRole('cell', { name: 'E2E Leser', exact: true })).not.toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/admin-group-deleted.png' });
+	});
+});
+
+// ── Tag management ─────────────────────────────────────────────────────────────
+
+test.describe('Admin — tag management', () => {
+	test('admin renames a tag and sees the change in the list', async ({ page }) => {
+		await page.goto('/admin');
+		await page.waitForSelector('[data-hydrated]');
+
+		await page.getByRole('button', { name: 'Schlagworte', exact: true }).click();
+		// Wait for the tags list to render after the tab switch
+		await page.waitForSelector('ul > li');
+
+		// Hover over the "Familie" row to reveal the opacity-0 action buttons
+		const familieRow = page
+			.locator('ul > li')
+			.filter({ has: page.locator('span', { hasText: /^Familie$/ }) });
+		await familieRow.hover();
+		await familieRow.getByRole('button', { name: 'Schlagwort bearbeiten' }).click();
+
+		// After clicking edit, {#if editingTagId} replaces the span with a form —
+		// the familieRow filter no longer matches, so we find the input directly.
+		await page.locator('input[name="name"]').fill('Familie (E2E)');
+		await page.getByRole('button', { name: 'Speichern' }).click();
+
+		await expect(page.getByText('Familie (E2E)')).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/admin-tag-renamed.png' });
+	});
+
+	test('admin renames it back to restore the original name', async ({ page }) => {
+		await page.goto('/admin');
+		await page.waitForSelector('[data-hydrated]');
+
+		await page.getByRole('button', { name: 'Schlagworte', exact: true }).click();
+		await page.waitForSelector('ul > li');
+
+		const renamedRow = page
+			.locator('ul > li')
+			.filter({ has: page.locator('span', { hasText: /^Familie \(E2E\)$/ }) });
+		await renamedRow.hover();
+		await renamedRow.getByRole('button', { name: 'Schlagwort bearbeiten' }).click();
+
+		await page.locator('input[name="name"]').fill('Familie');
+		await page.getByRole('button', { name: 'Speichern' }).click();
+
+		await expect(page.getByText('Familie')).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/admin-tag-restored.png' });
+	});
+});

frontend/e2e/auth.spec.ts

@@ -48,8 +48,27 @@ test.describe('Authentication', () => {
 		await page.screenshot({ path: 'test-results/e2e/login-success.png' });
 	});
 
+	test('login establishes a session that authenticates API calls', async ({ page }) => {
+		// Guards against regressions where the session cookie is set but broken.
+		// The profile page calls /api/users/me server-side — if auth works end-to-end,
+		// it loads without redirecting to /login.
+		await login(page);
+		await page.goto('/profile');
+		await expect(page).toHaveURL('/profile');
+		await expect(page.getByRole('heading', { name: /Mein Profil/i })).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/auth-session-valid.png' });
+	});
+
 	test('logout clears the session and redirects to /login', async ({ page }) => {
 		await login(page);
+		// Wait for hydration before interacting with the nav — onclick handlers are
+		// only wired up after SvelteKit finishes hydrating the page client-side.
+		await page.waitForSelector('[data-hydrated]');
+		// Logout is inside the user avatar dropdown — open it first.
+		// Wait for the dropdown button to be visible before clicking Abmelden,
+		// since the {#if userMenuOpen} block renders asynchronously in Svelte.
+		await page.locator('button[aria-haspopup="true"]').click();
+		await expect(page.getByRole('button', { name: 'Abmelden' })).toBeVisible();
 		await page.getByRole('button', { name: 'Abmelden' }).click();
 		await expect(page).toHaveURL(/\/login/);
 		// Confirm session is gone: navigating to / redirects back

frontend/e2e/documents.spec.ts

@@ -1,4 +1,5 @@
 import { test, expect } from '@playwright/test';
+import path from 'path';
 
 /**
  * Document management E2E tests.
@@ -80,6 +81,41 @@ test.describe('New document', () => {
 	});
 });
 
+test.describe('Document creation', () => {
+	test('user fills in a title and lands on the new document detail page', async ({ page }) => {
+		await page.goto('/documents/new');
+		await page.waitForSelector('[data-hydrated]');
+
+		await page.getByLabel('Titel').fill('E2E Testbrief');
+		await page.getByRole('button', { name: /Speichern/i }).click();
+
+		await expect(page).toHaveURL(/\/documents\/[^/]+$/);
+		await expect(page.getByRole('heading', { name: 'E2E Testbrief' })).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/document-create.png' });
+	});
+});
+
+test.describe('Document editing', () => {
+	test('user opens an existing document, changes the title, and sees the update', async ({
+		page
+	}) => {
+		// Find the document created in the previous describe
+		await page.goto('/?q=E2E+Testbrief');
+		await page.waitForSelector('[data-hydrated]');
+		const docLink = page.getByRole('link', { name: 'E2E Testbrief' }).first();
+		const href = await docLink.getAttribute('href');
+		await page.goto(`${href}/edit`);
+		await page.waitForSelector('[data-hydrated]');
+
+		await page.getByLabel('Titel').fill('E2E Testbrief (überarbeitet)');
+		await page.getByRole('button', { name: /Speichern/i }).click();
+
+		await expect(page).toHaveURL(/\/documents\/[^/]+$/);
+		await expect(page.getByText('E2E Testbrief (überarbeitet)')).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/document-edit-save.png' });
+	});
+});
+
 test.describe('Document edit', () => {
 	test('renders the edit form with pre-filled data', async ({ page }) => {
 		// Navigate to home, find first document, go to its edit page
@@ -107,3 +143,78 @@ test.describe('Document edit', () => {
 		await page.screenshot({ path: 'test-results/e2e/document-edit-date-error.png' });
 	});
 });
+
+// ─── PDF Viewer ───────────────────────────────────────────────────────────────
+
+const PDF_FIXTURE = path.resolve(__dirname, 'fixtures/minimal.pdf');
+
+test.describe('PDF viewer', () => {
+	let pdfDocHref: string;
+
+	test.beforeAll(async ({ browser }) => {
+		// Create a document and upload the PDF fixture so later tests have a
+		// real file attached.  Runs once for the whole describe block.
+		const ctx = await browser.newContext();
+		const p = await ctx.newPage();
+
+		await p.goto('/documents/new');
+		await p.waitForSelector('[data-hydrated]');
+		await p.getByLabel('Titel').fill('E2E PDF Viewer Test');
+		await p.getByRole('button', { name: /Speichern/i }).click();
+		await p.waitForURL(/\/documents\/[^/]+$/);
+
+		// Upload the PDF on the edit page
+		const href = p.url().replace(/\/$/, '');
+		pdfDocHref = href;
+		await p.goto(`${href}/edit`);
+		await p.waitForSelector('[data-hydrated]');
+		await p.locator('input[type="file"][name="file"]').setInputFiles(PDF_FIXTURE);
+		await p.getByRole('button', { name: /Speichern/i }).click();
+		await p.waitForURL(/\/documents\/[^/]+$/);
+
+		await ctx.close();
+	});
+
+	test('PDF renders in the custom viewer — canvas is present instead of iframe', async ({
+		page
+	}) => {
+		await page.goto(pdfDocHref);
+		await page.waitForSelector('[data-hydrated]');
+
+		// There must be NO iframe — we replaced it with PDF.js canvas rendering.
+		await expect(page.locator('iframe')).not.toBeAttached();
+
+		// At least one canvas element must be visible (one per rendered page).
+		await expect(page.locator('canvas').first()).toBeVisible({ timeout: 15000 });
+
+		await page.screenshot({ path: 'test-results/e2e/pdf-viewer-canvas.png' });
+	});
+
+	test('page navigation controls are visible', async ({ page }) => {
+		await page.goto(pdfDocHref);
+		await page.waitForSelector('[data-hydrated]');
+		await page.locator('canvas').first().waitFor({ state: 'visible', timeout: 15000 });
+
+		await expect(page.getByRole('button', { name: /prev|previous|zurück|vorige/i })).toBeVisible();
+		await expect(page.getByRole('button', { name: /next|weiter|nächste/i })).toBeVisible();
+
+		await page.screenshot({ path: 'test-results/e2e/pdf-viewer-nav.png' });
+	});
+
+	test('non-PDF attachment renders as an img element, not canvas', async ({ page }) => {
+		// The seed document "Urlaubspostkarte Ostsee" has a .jpg original filename.
+		// Navigate to it and confirm an <img> is used (no canvas, no iframe).
+		await page.goto('/');
+		await page.waitForSelector('[data-hydrated]');
+		await page.goto('/?q=Urlaubspostkarte');
+		const link = page.getByRole('link', { name: /Urlaubspostkarte/i }).first();
+		const href = await link.getAttribute('href');
+		await page.goto(href!);
+		await page.waitForSelector('[data-hydrated]');
+
+		// No canvas — this is an image document
+		await expect(page.locator('canvas')).not.toBeAttached();
+
+		await page.screenshot({ path: 'test-results/e2e/pdf-viewer-image-fallback.png' });
+	});
+});

frontend/e2e/fixtures/minimal.pdf

@@ -0,0 +1,21 @@
+%PDF-1.4
+1 0 obj
+<</Type/Catalog/Pages 2 0 R>>
+endobj
+2 0 obj
+<</Type/Pages/Kids[3 0 R]/Count 1>>
+endobj
+3 0 obj
+<</Type/Page/MediaBox[0 0 612 792]/Parent 2 0 R>>
+endobj
+xref
+0 4
+0000000000 65535 f 
+0000000009 00000 n 
+0000000054 00000 n 
+0000000105 00000 n 
+trailer
+<</Size 4/Root 1 0 R>>
+startxref
+170
+%%EOF

frontend/e2e/history.spec.ts

@@ -0,0 +1,112 @@
+import { test, expect } from '@playwright/test';
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
+/**
+ * Document edit history E2E tests.
+ * Creates its own test document (two versions) in beforeAll so these tests
+ * are fully independent of any other spec file.
+ */
+
+let docPath: string;
+
+test.describe('Document history panel', () => {
+	test.beforeAll(async ({ browser }) => {
+		// Create a fresh browser context that uses the stored auth session
+		const context = await browser.newContext({
+			storageState: path.join(__dirname, '.auth/user.json'),
+			locale: 'de-DE'
+		});
+		const page = await context.newPage();
+
+		// 1. Create a new document
+		await page.goto('/documents/new');
+		await page.waitForSelector('[data-hydrated]');
+		await page.getByLabel('Titel').fill('E2E History Test Dokument');
+		await page.getByRole('button', { name: /Speichern/i }).click();
+		// Wait for redirect to the new document's UUID-based URL (not /documents/new)
+		await page.waitForURL(/\/documents\/[0-9a-f-]{36}$/);
+		docPath = new URL(page.url()).pathname;
+
+		// 2. Edit the document to create a second version
+		await page.goto(`${docPath}/edit`);
+		await page.waitForSelector('[data-hydrated]');
+		await page.getByLabel('Titel').fill('E2E History Test Dokument (bearbeitet)');
+		await page.getByRole('button', { name: /Speichern/i }).click();
+		await page.waitForURL(/\/documents\/[0-9a-f-]{36}$/);
+
+		await context.close();
+	});
+
+	test('history section appears and shows two versions', async ({ page }) => {
+		await page.goto(docPath);
+		await page.waitForSelector('[data-hydrated]');
+
+		const historyToggle = page.getByRole('button', { name: /Verlauf/i });
+		await expect(historyToggle).toBeVisible();
+		await historyToggle.click();
+
+		// Wait for versions to load (API call happens after panel opens)
+		const versionItems = page.locator('[data-testid="history-version"]');
+		await expect(versionItems).toHaveCount(2, { timeout: 10000 });
+
+		await page.screenshot({ path: 'test-results/e2e/history-versions-list.png' });
+	});
+
+	test('diff view highlights changed field after title edit', async ({ page }) => {
+		await page.goto(docPath);
+		await page.waitForSelector('[data-hydrated]');
+
+		const historyToggle = page.getByRole('button', { name: /Verlauf/i });
+		await historyToggle.click();
+
+		// Wait for versions to load, then click the second one (the edit)
+		const versionItems = page.locator('[data-testid="history-version"]');
+		await expect(versionItems.nth(1)).toBeVisible({ timeout: 10000 });
+		await versionItems.nth(1).click();
+
+		const diffPanel = page.locator('[data-testid="history-diff"]');
+		await expect(diffPanel).toBeVisible();
+		await expect(diffPanel.getByText(/Titel/i)).toBeVisible();
+
+		await page.screenshot({ path: 'test-results/e2e/history-diff-title.png' });
+	});
+
+	test('compare mode lets user compare any two versions', async ({ page }) => {
+		await page.goto(docPath);
+		await page.waitForSelector('[data-hydrated]');
+
+		const historyToggle = page.getByRole('button', { name: /Verlauf/i });
+		await historyToggle.click();
+
+		// Wait for versions to load before the compare button appears
+		await expect(page.locator('[data-testid="history-version"]').first()).toBeVisible({
+			timeout: 10000
+		});
+
+		const compareBtn = page.getByRole('button', { name: /Vergleichen/i });
+		await expect(compareBtn).toBeVisible();
+		await compareBtn.click();
+
+		const selectA = page.getByLabel(/Version A/i);
+		const selectB = page.getByLabel(/Version B/i);
+		await expect(selectA).toBeVisible();
+		await expect(selectB).toBeVisible();
+
+		// Select version 1 for A and version 2 for B
+		await selectA.selectOption({ index: 1 });
+		await selectB.selectOption({ index: 2 });
+
+		await page
+			.getByRole('button', { name: /Vergleichen/i })
+			.last()
+			.click();
+
+		const diffPanel = page.locator('[data-testid="history-diff"]');
+		await expect(diffPanel).toBeVisible();
+
+		await page.screenshot({ path: 'test-results/e2e/history-compare-mode.png' });
+	});
+});

frontend/e2e/password-reset.spec.ts

@@ -0,0 +1,113 @@
+import { test, expect } from '@playwright/test';
+
+/**
+ * Password-reset E2E tests.
+ *
+ * These tests run WITHOUT a stored session because they test unauthenticated flows.
+ *
+ * They rely on the "e2e" Spring profile being active in CI (see playwright.config.ts /
+ * docker-compose.e2e.yml).  The profile exposes GET /api/auth/reset-token-for-test?email=
+ * so we can retrieve the generated token without a real mail server.
+ */
+test.use({ storageState: { cookies: [], origins: [] } });
+
+// The backend is accessible directly for E2E helper calls (no SvelteKit proxy needed).
+const BACKEND_URL = process.env.E2E_BACKEND_URL ?? 'http://localhost:8080';
+
+async function getResetToken(email: string): Promise<string> {
+	const res = await fetch(
+		`${BACKEND_URL}/api/auth/reset-token-for-test?email=${encodeURIComponent(email)}`
+	);
+	if (!res.ok) throw new Error(`Could not retrieve reset token for ${email}: ${res.status}`);
+	return res.text();
+}
+
+test.describe('Password reset', () => {
+	test('forgot-password page is accessible without login', async ({ page }) => {
+		await page.goto('/forgot-password');
+		await expect(page).toHaveURL('/forgot-password');
+		await expect(page.getByRole('heading', { name: /Passwort vergessen/i })).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/password-reset-form.png' });
+	});
+
+	test('forgot-password shows success banner for any email (prevents user enumeration)', async ({
+		page
+	}) => {
+		await page.goto('/forgot-password');
+		await page.getByLabel(/E-Mail/i).fill('nonexistent@example.com');
+		await page.getByRole('button', { name: /Link anfordern/i }).click();
+		// Always shows success — never reveals whether the email exists
+		await expect(page.locator('.bg-green-50')).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/password-reset-success-banner.png' });
+	});
+
+	test('full password reset flow', async ({ page }) => {
+		const testEmail = process.env.E2E_EMAIL ?? 'admin@familyarchive.local';
+		const originalPassword = process.env.E2E_PASSWORD ?? 'admin123';
+		const newPassword = 'NewP@ssw0rd_E2E!';
+
+		// 1. Request reset
+		await page.goto('/forgot-password');
+		await page.getByLabel(/E-Mail/i).fill(testEmail);
+		await page.getByRole('button', { name: /Link anfordern/i }).click();
+		await expect(page.locator('.bg-green-50')).toBeVisible();
+
+		// 2. Fetch the token via the test helper endpoint
+		const token = await getResetToken(testEmail);
+		expect(token.length).toBeGreaterThan(0);
+
+		// 3. Open the reset-password page with the token
+		await page.goto(`/reset-password?token=${token}`);
+		await expect(page.getByRole('heading', { name: /Neues Passwort/i })).toBeVisible();
+		await page.getByLabel(/^Neues Passwort$/i).fill(newPassword);
+		await page.getByLabel(/Passwort bestätigen/i).fill(newPassword);
+		await page.getByRole('button', { name: /Passwort speichern/i }).click();
+
+		// 4. Success banner — then navigate to login
+		await expect(page.locator('.bg-green-50')).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/password-reset-changed.png' });
+		await page.getByRole('link', { name: /Zurück zum Login/i }).click();
+
+		// 5. Log in with new password
+		await expect(page).toHaveURL(/\/login/);
+		await page.getByLabel('Benutzername').fill(process.env.E2E_USERNAME ?? 'admin');
+		await page.getByLabel('Passwort').fill(newPassword);
+		await page.getByRole('button', { name: 'Anmelden' }).click();
+		await expect(page).toHaveURL('/');
+
+		// 6. Restore original password via profile page
+		await page.goto('/profile');
+		await page.locator('input[name="currentPassword"]').fill(newPassword);
+		await page.locator('input[name="newPassword"]').fill(originalPassword);
+		await page.locator('input[name="confirmPassword"]').fill(originalPassword);
+		// Profile page has two "Speichern" buttons — the password form is the last one
+		await page.locator('button[type="submit"]').last().click();
+		// After changing password, auth_token is stale → redirect to login
+		await expect(page).toHaveURL(/\/login/);
+
+		// 7. Log back in with original password to confirm restore worked
+		await page.getByLabel('Benutzername').fill(process.env.E2E_USERNAME ?? 'admin');
+		await page.getByLabel('Passwort').fill(originalPassword);
+		await page.getByRole('button', { name: 'Anmelden' }).click();
+		await expect(page).toHaveURL('/');
+		await page.screenshot({ path: 'test-results/e2e/password-reset-restored.png' });
+	});
+
+	test('reset-password page shows error for invalid token', async ({ page }) => {
+		await page.goto('/reset-password?token=invalidtoken000');
+		await page.getByLabel(/^Neues Passwort$/i).fill('somepassword');
+		await page.getByLabel(/Passwort bestätigen/i).fill('somepassword');
+		await page.getByRole('button', { name: /Passwort speichern/i }).click();
+		await expect(page.locator('.text-red-600')).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/password-reset-invalid-token.png' });
+	});
+
+	test('reset-password page shows mismatch error when passwords differ', async ({ page }) => {
+		await page.goto('/reset-password?token=anytoken');
+		await page.getByLabel(/^Neues Passwort$/i).fill('password1');
+		await page.getByLabel(/Passwort bestätigen/i).fill('password2');
+		await page.getByRole('button', { name: /Passwort speichern/i }).click();
+		await expect(page.locator('.text-red-600')).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/password-reset-mismatch.png' });
+	});
+});

frontend/e2e/permissions.spec.ts

@@ -1,4 +1,14 @@
 import { test, expect } from '@playwright/test';
+import { login } from './helpers/auth';
+
+/**
+ * Permission E2E tests.
+ *
+ * Two describe blocks form the full story:
+ * 1. Admin user — can see all write controls.
+ * 2. Read-only user ("reader", seeded in DataInitializer with READ_ALL only) —
+ *    can browse content but sees no write controls anywhere.
+ */
 
 test.describe('Write permissions — admin user', () => {
 	test('admin user sees Neues Dokument link on home page', async ({ page }) => {
@@ -29,3 +39,49 @@ test.describe('Write permissions — admin user', () => {
 		await expect(page.getByRole('button', { name: /Bearbeiten/i })).toBeVisible();
 	});
 });
+
+// ── Read-only user journey ─────────────────────────────────────────────────────
+//
+// The "reader" user is seeded by DataInitializer (e2e profile) with READ_ALL only.
+// They can browse documents and persons but must not see any mutation controls.
+
+test.describe('Read-only user — no write controls visible', () => {
+	// Fresh session — no shared admin cookies
+	test.use({ storageState: { cookies: [], origins: [] } });
+
+	test.beforeEach(async ({ page }) => {
+		await login(page, 'reader', 'reader123');
+	});
+
+	test('read-only user is redirected to home after login', async ({ page }) => {
+		await expect(page).toHaveURL('/');
+		await page.screenshot({ path: 'test-results/e2e/permissions-reader-home.png' });
+	});
+
+	test('home page does not show the "Neues Dokument" link', async ({ page }) => {
+		await expect(page.getByRole('link', { name: /Neues Dokument/i })).not.toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/permissions-reader-no-new-doc.png' });
+	});
+
+	test('persons page does not show the "Neue Person" link', async ({ page }) => {
+		await page.goto('/persons');
+		await expect(page.getByRole('link', { name: /Neue Person/i })).not.toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/permissions-reader-no-new-person.png' });
+	});
+
+	test('person detail page does not show the edit button', async ({ page }) => {
+		await page.goto('/persons');
+		const firstPerson = page.locator('a[href^="/persons/"]:not([href="/persons/new"])').first();
+		await firstPerson.click();
+		await page.waitForSelector('[data-hydrated]');
+		await expect(page.getByRole('button', { name: /Bearbeiten/i })).not.toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/permissions-reader-no-edit.png' });
+	});
+
+	test('navigating directly to /documents/new redirects away', async ({ page }) => {
+		await page.goto('/documents/new');
+		// Read-only user should not be able to access the new document form
+		await expect(page).not.toHaveURL('/documents/new');
+		await page.screenshot({ path: 'test-results/e2e/permissions-reader-no-new-doc-direct.png' });
+	});
+});

frontend/e2e/persons.spec.ts

@@ -95,6 +95,21 @@ test.describe('New person', () => {
 	});
 });
 
+test.describe('Person creation', () => {
+	test('user fills in first and last name and lands on the new person detail page', async ({
+		page
+	}) => {
+		await page.goto('/persons/new');
+		await page.getByLabel('Vorname').fill('E2E');
+		await page.getByLabel('Nachname').fill('Testperson');
+		await page.getByRole('button', { name: /Erstellen/i }).click();
+
+		await expect(page).toHaveURL(/\/persons\/[^/]+$/);
+		await expect(page.getByRole('heading', { name: 'E2E Testperson' })).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/person-create.png' });
+	});
+});
+
 test.describe('Person detail — sort toggle', () => {
 	test('each section has its own sort toggle that works independently', async ({ page }) => {
 		await page.goto('/persons');
@@ -259,7 +274,10 @@ test.describe('Conversations — enhancements', () => {
 		const originalReceiverId = url.searchParams.get('receiverId')!;
 
 		await page.getByTestId('conv-swap-btn').click();
-		await page.waitForURL(/senderId=/);
+		// Wait for the URL to reflect the swapped IDs (not just any URL with senderId=)
+		await page.waitForURL(
+			(url) => new URL(url).searchParams.get('senderId') === originalReceiverId
+		);
 
 		const swappedUrl = new URL(page.url());
 		expect(swappedUrl.searchParams.get('senderId')).toBe(originalReceiverId);

frontend/e2e/profile.spec.ts

@@ -0,0 +1,106 @@
+import { test, expect } from '@playwright/test';
+
+/**
+ * Profile page E2E tests.
+ *
+ * Reads top-to-bottom as a single user journey:
+ * the logged-in admin opens their profile, updates their display name,
+ * tries a wrong password (sees an error), then successfully changes their
+ * password and logs back in with the new one.
+ *
+ * The password change test restores the original password at the end so the
+ * shared session remains valid for all subsequent test files.
+ */
+
+test.describe('Profile page', () => {
+	test('user opens their profile and sees the personal data and password sections', async ({
+		page
+	}) => {
+		await page.goto('/profile');
+		await expect(page.getByRole('heading', { name: /Mein Profil/i })).toBeVisible();
+		await expect(page.getByText('Persönliche Daten')).toBeVisible();
+		await expect(page.getByText('Passwort ändern')).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/profile-view.png' });
+	});
+
+	test('user saves updated first and last name and sees confirmation', async ({ page }) => {
+		await page.goto('/profile');
+		await page.waitForSelector('[data-hydrated]');
+
+		await page.locator('input[name="firstName"]').fill('E2E');
+		await page.locator('input[name="lastName"]').fill('Admin');
+
+		// Two "Speichern" buttons exist — the first belongs to the profile form
+		await page
+			.locator('form[action*="updateProfile"]')
+			.getByRole('button', { name: /Speichern/i })
+			.click();
+
+		await expect(page.getByText('Gespeichert.')).toBeVisible();
+		// Nav avatar shows the new initials derived from firstName + lastName
+		await expect(page.locator('button[aria-haspopup="true"]')).toContainText('EA');
+		await page.screenshot({ path: 'test-results/e2e/profile-save.png' });
+	});
+
+	test('shows an error when the current password is wrong', async ({ page }) => {
+		await page.goto('/profile');
+		await page.waitForSelector('[data-hydrated]');
+
+		await page.locator('input[name="currentPassword"]').fill('definitely-wrong');
+		await page.locator('input[name="newPassword"]').fill('NewPass123!');
+		await page.locator('input[name="confirmPassword"]').fill('NewPass123!');
+
+		await page
+			.locator('form[action*="changePassword"]')
+			.getByRole('button', { name: /Speichern/i })
+			.click();
+
+		await expect(page.getByText('Das aktuelle Passwort ist falsch.')).toBeVisible();
+		await page.screenshot({ path: 'test-results/e2e/profile-wrong-password.png' });
+	});
+
+	test('user changes their password and can log in with the new one', async ({ page }) => {
+		await page.goto('/profile');
+		await page.waitForSelector('[data-hydrated]');
+
+		// ── Step 1: change to a temporary password ─────────────────────────────
+		await page.locator('input[name="currentPassword"]').fill('admin123');
+		await page.locator('input[name="newPassword"]').fill('TempAdmin456!');
+		await page.locator('input[name="confirmPassword"]').fill('TempAdmin456!');
+		await page
+			.locator('form[action*="changePassword"]')
+			.getByRole('button', { name: /Speichern/i })
+			.click();
+
+		// After the password changes, the auth_token cookie still carries the old
+		// credentials. use:enhance re-runs the page's load function, which calls
+		// the backend with the stale Basic Auth header → 401 → redirect to /login.
+		await expect(page).toHaveURL(/\/login/);
+
+		// ── Step 2: log in with the new password ───────────────────────────────
+		await page.getByLabel('Benutzername').fill('admin');
+		await page.getByLabel('Passwort').fill('TempAdmin456!');
+		await page.getByRole('button', { name: 'Anmelden' }).click();
+		await expect(page).toHaveURL('/');
+		await page.screenshot({ path: 'test-results/e2e/profile-password-changed.png' });
+
+		// ── Step 3: restore the original password so subsequent tests still work ─
+		await page.goto('/profile');
+		await page.waitForSelector('[data-hydrated]');
+		await page.locator('input[name="currentPassword"]').fill('TempAdmin456!');
+		await page.locator('input[name="newPassword"]').fill('admin123');
+		await page.locator('input[name="confirmPassword"]').fill('admin123');
+		await page
+			.locator('form[action*="changePassword"]')
+			.getByRole('button', { name: /Speichern/i })
+			.click();
+		// Redirected to /login again after credential rotation
+		await expect(page).toHaveURL(/\/login/);
+
+		// ── Step 4: log back in with the restored password ─────────────────────
+		await page.getByLabel('Benutzername').fill('admin');
+		await page.getByLabel('Passwort').fill('admin123');
+		await page.getByRole('button', { name: 'Anmelden' }).click();
+		await expect(page).toHaveURL('/');
+	});
+});

frontend/messages/de.json

@@ -159,6 +159,14 @@
 	"admin_section_new_group": "Neue Gruppe anlegen",
 	"admin_group_name_placeholder": "Gruppenname (z.B. Editoren)",
 	"admin_user_delete_confirm": "Benutzer {username} wirklich löschen?",
+	"admin_btn_new_user": "Neuer Benutzer",
+	"admin_user_new_heading": "Neuen Benutzer anlegen",
+	"admin_user_edit_heading": "Benutzer bearbeiten: {username}",
+	"admin_user_created": "Benutzer wurde erstellt.",
+	"admin_user_updated": "Änderungen gespeichert.",
+	"admin_col_full_name": "Name",
+	"admin_label_new_password_optional": "Neues Passwort (optional)",
+	"admin_label_initial_password": "Passwort",
 	"doc_file_error_preview": "Vorschau konnte nicht geladen werden.",
 	"doc_download_title": "Herunterladen",
 	"doc_tag_filter_title": "Nach {name} filtern",
@@ -194,5 +202,43 @@
 	"profile_password_mismatch": "Die neuen Passwörter stimmen nicht überein.",
 	"profile_saved": "Gespeichert.",
 	"profile_password_changed": "Passwort erfolgreich geändert.",
-	"user_profile_heading": "Profil von"
+	"user_profile_heading": "Profil von",
+	"error_invalid_reset_token": "Der Link ist ungültig oder abgelaufen.",
+	"forgot_password_heading": "Passwort vergessen",
+	"forgot_password_email_label": "E-Mail-Adresse",
+	"forgot_password_submit": "Link anfordern",
+	"forgot_password_success": "Falls ein Konto mit dieser E-Mail-Adresse existiert, erhalten Sie in Kürze eine E-Mail mit einem Link zum Zurücksetzen Ihres Passworts.",
+	"forgot_password_back_to_login": "Zurück zum Login",
+	"reset_password_heading": "Neues Passwort festlegen",
+	"reset_password_label": "Neues Passwort",
+	"reset_password_confirm_label": "Passwort bestätigen",
+	"reset_password_submit": "Passwort speichern",
+	"reset_password_mismatch": "Die Passwörter stimmen nicht überein.",
+	"reset_password_success": "Ihr Passwort wurde erfolgreich geändert. Sie können sich jetzt anmelden.",
+	"login_forgot_password": "Passwort vergessen?",
+	"history_section_title": "Verlauf",
+	"history_loading": "Lade Verlauf…",
+	"history_empty": "Noch keine Versionen vorhanden.",
+	"history_version_label": "Version",
+	"history_compare_mode": "Vergleichen",
+	"history_compare_select_a": "Version A",
+	"history_compare_select_b": "Version B",
+	"history_compare_apply": "Vergleichen",
+	"history_diff_no_changes": "Keine Änderungen zwischen diesen Versionen.",
+	"history_field_title": "Titel",
+	"history_field_document_date": "Datum",
+	"history_field_location": "Ort",
+	"history_field_document_location": "Archivstandort",
+	"history_field_transcription": "Transkription",
+	"history_field_summary": "Zusammenfassung",
+	"history_field_sender": "Absender",
+	"history_field_receivers": "Empfänger",
+	"history_field_tags": "Schlagworte",
+	"admin_tab_system": "System",
+	"admin_system_backfill_heading": "Verlaufsdaten auffüllen",
+	"admin_system_backfill_description": "Erstellt einen initialen Verlaufseintrag für alle Dokumente, die noch keinen Verlauf haben (z.B. importierte Dokumente). Dadurch werden beim nächsten Bearbeiten nur die tatsächlich geänderten Felder hervorgehoben.",
+	"admin_system_backfill_btn": "Jetzt auffüllen",
+	"admin_system_backfill_success": "{count} Dokumente wurden aufgefüllt.",
+	"comp_expandable_show_more": "Mehr anzeigen",
+	"comp_expandable_show_less": "Weniger anzeigen"
 }

frontend/messages/en.json

@@ -159,6 +159,14 @@
 	"admin_section_new_group": "Create new group",
 	"admin_group_name_placeholder": "Group name (e.g. Editors)",
 	"admin_user_delete_confirm": "Really delete user {username}?",
+	"admin_btn_new_user": "New User",
+	"admin_user_new_heading": "Create new user",
+	"admin_user_edit_heading": "Edit user: {username}",
+	"admin_user_created": "User has been created.",
+	"admin_user_updated": "Changes saved.",
+	"admin_col_full_name": "Name",
+	"admin_label_new_password_optional": "New password (optional)",
+	"admin_label_initial_password": "Password",
 	"doc_file_error_preview": "Could not load preview.",
 	"doc_download_title": "Download",
 	"doc_tag_filter_title": "Filter by {name}",
@@ -194,5 +202,43 @@
 	"profile_password_mismatch": "The new passwords do not match.",
 	"profile_saved": "Saved.",
 	"profile_password_changed": "Password changed successfully.",
-	"user_profile_heading": "Profile of"
+	"user_profile_heading": "Profile of",
+	"error_invalid_reset_token": "The link is invalid or has expired.",
+	"forgot_password_heading": "Forgot password",
+	"forgot_password_email_label": "Email address",
+	"forgot_password_submit": "Request link",
+	"forgot_password_success": "If an account with this email address exists, you will shortly receive an email with a link to reset your password.",
+	"forgot_password_back_to_login": "Back to login",
+	"reset_password_heading": "Set new password",
+	"reset_password_label": "New password",
+	"reset_password_confirm_label": "Confirm password",
+	"reset_password_submit": "Save password",
+	"reset_password_mismatch": "The passwords do not match.",
+	"reset_password_success": "Your password has been changed successfully. You can now log in.",
+	"login_forgot_password": "Forgot password?",
+	"history_section_title": "History",
+	"history_loading": "Loading history…",
+	"history_empty": "No versions yet.",
+	"history_version_label": "Version",
+	"history_compare_mode": "Compare",
+	"history_compare_select_a": "Version A",
+	"history_compare_select_b": "Version B",
+	"history_compare_apply": "Compare",
+	"history_diff_no_changes": "No changes between these versions.",
+	"history_field_title": "Title",
+	"history_field_document_date": "Date",
+	"history_field_location": "Location",
+	"history_field_document_location": "Archive location",
+	"history_field_transcription": "Transcription",
+	"history_field_summary": "Summary",
+	"history_field_sender": "Sender",
+	"history_field_receivers": "Receivers",
+	"history_field_tags": "Tags",
+	"admin_tab_system": "System",
+	"admin_system_backfill_heading": "Backfill history data",
+	"admin_system_backfill_description": "Creates an initial history entry for all documents that do not have one yet (e.g. imported documents). This ensures that future edits only highlight actually changed fields.",
+	"admin_system_backfill_btn": "Backfill now",
+	"admin_system_backfill_success": "{count} documents were backfilled.",
+	"comp_expandable_show_more": "Show more",
+	"comp_expandable_show_less": "Show less"
 }

frontend/messages/es.json

@@ -159,6 +159,14 @@
 	"admin_section_new_group": "Crear nuevo grupo",
 	"admin_group_name_placeholder": "Nombre del grupo (p.ej. Editores)",
 	"admin_user_delete_confirm": "¿Realmente eliminar al usuario {username}?",
+	"admin_btn_new_user": "Nuevo usuario",
+	"admin_user_new_heading": "Crear nuevo usuario",
+	"admin_user_edit_heading": "Editar usuario: {username}",
+	"admin_user_created": "Usuario creado.",
+	"admin_user_updated": "Cambios guardados.",
+	"admin_col_full_name": "Nombre",
+	"admin_label_new_password_optional": "Nueva contraseña (opcional)",
+	"admin_label_initial_password": "Contraseña",
 	"doc_file_error_preview": "No se pudo cargar la vista previa.",
 	"doc_download_title": "Descargar",
 	"doc_tag_filter_title": "Filtrar por {name}",
@@ -194,5 +202,43 @@
 	"profile_password_mismatch": "Las nuevas contraseñas no coinciden.",
 	"profile_saved": "Guardado.",
 	"profile_password_changed": "Contraseña cambiada con éxito.",
-	"user_profile_heading": "Perfil de"
+	"user_profile_heading": "Perfil de",
+	"error_invalid_reset_token": "El enlace no es válido o ha expirado.",
+	"forgot_password_heading": "Contraseña olvidada",
+	"forgot_password_email_label": "Correo electrónico",
+	"forgot_password_submit": "Solicitar enlace",
+	"forgot_password_success": "Si existe una cuenta con esta dirección de correo electrónico, recibirá en breve un correo con un enlace para restablecer su contraseña.",
+	"forgot_password_back_to_login": "Volver al inicio de sesión",
+	"reset_password_heading": "Establecer nueva contraseña",
+	"reset_password_label": "Nueva contraseña",
+	"reset_password_confirm_label": "Confirmar contraseña",
+	"reset_password_submit": "Guardar contraseña",
+	"reset_password_mismatch": "Las contraseñas no coinciden.",
+	"reset_password_success": "Su contraseña ha sido cambiada con éxito. Ahora puede iniciar sesión.",
+	"login_forgot_password": "¿Olvidó su contraseña?",
+	"history_section_title": "Historial",
+	"history_loading": "Cargando historial…",
+	"history_empty": "Aún no hay versiones.",
+	"history_version_label": "Versión",
+	"history_compare_mode": "Comparar",
+	"history_compare_select_a": "Versión A",
+	"history_compare_select_b": "Versión B",
+	"history_compare_apply": "Comparar",
+	"history_diff_no_changes": "No hay cambios entre estas versiones.",
+	"history_field_title": "Título",
+	"history_field_document_date": "Fecha",
+	"history_field_location": "Lugar",
+	"history_field_document_location": "Ubicación en archivo",
+	"history_field_transcription": "Transcripción",
+	"history_field_summary": "Resumen",
+	"history_field_sender": "Remitente",
+	"history_field_receivers": "Destinatarios",
+	"history_field_tags": "Etiquetas",
+	"admin_tab_system": "Sistema",
+	"admin_system_backfill_heading": "Completar datos de historial",
+	"admin_system_backfill_description": "Crea una entrada de historial inicial para todos los documentos que aún no tienen ninguna (p.ej. documentos importados). Así, en la próxima edición solo se resaltarán los campos realmente modificados.",
+	"admin_system_backfill_btn": "Completar ahora",
+	"admin_system_backfill_success": "{count} documentos fueron completados.",
+	"comp_expandable_show_more": "Mostrar más",
+	"comp_expandable_show_less": "Mostrar menos"
 }

frontend/package-lock.json

@@ -8,7 +8,9 @@
 			"name": "frontend",
 			"version": "0.0.1",
 			"dependencies": {
-				"openapi-fetch": "^0.13.5"
+				"diff": "^8.0.3",
+				"openapi-fetch": "^0.13.5",
+				"pdfjs-dist": "^5.5.207"
 			},
 			"devDependencies": {
 				"@eslint/compat": "^1.4.0",
@@ -21,6 +23,7 @@
 				"@tailwindcss/forms": "^0.5.10",
 				"@tailwindcss/typography": "^0.5.19",
 				"@tailwindcss/vite": "^4.1.17",
+				"@types/diff": "^7.0.2",
 				"@types/node": "^24",
 				"@vitest/browser-playwright": "^4.0.10",
 				"eslint": "^9.39.1",
@@ -883,6 +886,256 @@
 			"dev": true,
 			"license": "Apache-2.0"
 		},
+		"node_modules/@napi-rs/canvas": {
+			"version": "0.1.97",
+			"resolved": "https://registry.npmjs.org/@napi-rs/canvas/-/canvas-0.1.97.tgz",
+			"integrity": "sha512-8cFniXvrIEnVwuNSRCW9wirRZbHvrD3JVujdS2P5n5xiJZNZMOZcfOvJ1pb66c7jXMKHHglJEDVJGbm8XWFcXQ==",
+			"license": "MIT",
+			"optional": true,
+			"workspaces": [
+				"e2e/*"
+			],
+			"engines": {
+				"node": ">= 10"
+			},
+			"funding": {
+				"type": "github",
+				"url": "https://github.com/sponsors/Brooooooklyn"
+			},
+			"optionalDependencies": {
+				"@napi-rs/canvas-android-arm64": "0.1.97",
+				"@napi-rs/canvas-darwin-arm64": "0.1.97",
+				"@napi-rs/canvas-darwin-x64": "0.1.97",
+				"@napi-rs/canvas-linux-arm-gnueabihf": "0.1.97",
+				"@napi-rs/canvas-linux-arm64-gnu": "0.1.97",
+				"@napi-rs/canvas-linux-arm64-musl": "0.1.97",
+				"@napi-rs/canvas-linux-riscv64-gnu": "0.1.97",
+				"@napi-rs/canvas-linux-x64-gnu": "0.1.97",
+				"@napi-rs/canvas-linux-x64-musl": "0.1.97",
+				"@napi-rs/canvas-win32-arm64-msvc": "0.1.97",
+				"@napi-rs/canvas-win32-x64-msvc": "0.1.97"
+			}
+		},
+		"node_modules/@napi-rs/canvas-android-arm64": {
+			"version": "0.1.97",
+			"resolved": "https://registry.npmjs.org/@napi-rs/canvas-android-arm64/-/canvas-android-arm64-0.1.97.tgz",
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+			"cpu": [
+				"arm64"
+			],
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"android"
+			],
+			"engines": {
+				"node": ">= 10"
+			},
+			"funding": {
+				"type": "github",
+				"url": "https://github.com/sponsors/Brooooooklyn"
+			}
+		},
+		"node_modules/@napi-rs/canvas-darwin-arm64": {
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+				"darwin"
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+				"type": "github",
+				"url": "https://github.com/sponsors/Brooooooklyn"
+			}
+		},
+		"node_modules/@napi-rs/canvas-darwin-x64": {
+			"version": "0.1.97",
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+				"type": "github",
+				"url": "https://github.com/sponsors/Brooooooklyn"
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+				"type": "github",
+				"url": "https://github.com/sponsors/Brooooooklyn"
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+				"url": "https://github.com/sponsors/Brooooooklyn"
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+				"type": "github",
+				"url": "https://github.com/sponsors/Brooooooklyn"
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+		},
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+			"version": "0.1.97",
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+				"type": "github",
+				"url": "https://github.com/sponsors/Brooooooklyn"
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+		},
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+				"type": "github",
+				"url": "https://github.com/sponsors/Brooooooklyn"
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+		},
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+			],
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+				"node": ">= 10"
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+			"funding": {
+				"type": "github",
+				"url": "https://github.com/sponsors/Brooooooklyn"
+			}
+		},
+		"node_modules/@napi-rs/canvas-win32-arm64-msvc": {
+			"version": "0.1.97",
+			"resolved": "https://registry.npmjs.org/@napi-rs/canvas-win32-arm64-msvc/-/canvas-win32-arm64-msvc-0.1.97.tgz",
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+			"cpu": [
+				"arm64"
+			],
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"win32"
+			],
+			"engines": {
+				"node": ">= 10"
+			},
+			"funding": {
+				"type": "github",
+				"url": "https://github.com/sponsors/Brooooooklyn"
+			}
+		},
+		"node_modules/@napi-rs/canvas-win32-x64-msvc": {
+			"version": "0.1.97",
+			"resolved": "https://registry.npmjs.org/@napi-rs/canvas-win32-x64-msvc/-/canvas-win32-x64-msvc-0.1.97.tgz",
+			"integrity": "sha512-sWtD2EE3fV0IzN+iiQUqr/Q1SwqWhs2O1FKItFlxtdDkikpEj5g7DKQpY3x55H/MAOnL8iomnlk3mcEeGiUMoQ==",
+			"cpu": [
+				"x64"
+			],
+			"license": "MIT",
+			"optional": true,
+			"os": [
+				"win32"
+			],
+			"engines": {
+				"node": ">= 10"
+			},
+			"funding": {
+				"type": "github",
+				"url": "https://github.com/sponsors/Brooooooklyn"
+			}
+		},
 		"node_modules/@playwright/test": {
 			"version": "1.58.2",
 			"resolved": "https://registry.npmjs.org/@playwright/test/-/test-1.58.2.tgz",
@@ -1895,6 +2148,13 @@
 			"dev": true,
 			"license": "MIT"
 		},
+		"node_modules/@types/diff": {
+			"version": "7.0.2",
+			"resolved": "https://registry.npmjs.org/@types/diff/-/diff-7.0.2.tgz",
+			"integrity": "sha512-JSWRMozjFKsGlEjiiKajUjIJVKuKdE3oVy2DNtK+fUo8q82nhFZ2CPQwicAIkXrofahDXrWJ7mjelvZphMS98Q==",
+			"dev": true,
+			"license": "MIT"
+		},
 		"node_modules/@types/estree": {
 			"version": "1.0.8",
 			"resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.8.tgz",
@@ -2780,6 +3040,15 @@
 			"dev": true,
 			"license": "MIT"
 		},
+		"node_modules/diff": {
+			"version": "8.0.3",
+			"resolved": "https://registry.npmjs.org/diff/-/diff-8.0.3.tgz",
+			"integrity": "sha512-qejHi7bcSD4hQAZE0tNAawRK1ZtafHDmMTMkrrIGgSLl7hTnQHmKCeB45xAcbfTqK2zowkM3j3bHt/4b/ARbYQ==",
+			"license": "BSD-3-Clause",
+			"engines": {
+				"node": ">=0.3.1"
+			}
+		},
 		"node_modules/enhanced-resolve": {
 			"version": "5.20.0",
 			"resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-5.20.0.tgz",
@@ -3936,6 +4205,13 @@
 			"dev": true,
 			"license": "MIT"
 		},
+		"node_modules/node-readable-to-web-readable-stream": {
+			"version": "0.4.2",
+			"resolved": "https://registry.npmjs.org/node-readable-to-web-readable-stream/-/node-readable-to-web-readable-stream-0.4.2.tgz",
+			"integrity": "sha512-/cMZNI34v//jUTrI+UIo4ieHAB5EZRY/+7OmXZgBxaWBMcW2tGdceIw06RFxWxrKZ5Jp3sI2i5TsRo+CBhtVLQ==",
+			"license": "MIT",
+			"optional": true
+		},
 		"node_modules/obug": {
 			"version": "2.1.1",
 			"resolved": "https://registry.npmjs.org/obug/-/obug-2.1.1.tgz",
@@ -4111,6 +4387,19 @@
 			"dev": true,
 			"license": "MIT"
 		},
+		"node_modules/pdfjs-dist": {
+			"version": "5.5.207",
+			"resolved": "https://registry.npmjs.org/pdfjs-dist/-/pdfjs-dist-5.5.207.tgz",
+			"integrity": "sha512-WMqqw06w1vUt9ZfT0gOFhMf3wHsWhaCrxGrckGs5Cci6ybDW87IvPaOd2pnBwT6BJuP/CzXDZxjFgmSULLdsdw==",
+			"license": "Apache-2.0",
+			"engines": {
+				"node": ">=20.19.0 || >=22.13.0 || >=24"
+			},
+			"optionalDependencies": {
+				"@napi-rs/canvas": "^0.1.95",
+				"node-readable-to-web-readable-stream": "^0.4.2"
+			}
+		},
 		"node_modules/picocolors": {
 			"version": "1.1.1",
 			"resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",

frontend/package.json

@@ -20,7 +20,9 @@
 		"generate:api": "openapi-typescript http://localhost:8080/v3/api-docs -o ./src/lib/generated/api.ts"
 	},
 	"dependencies": {
-		"openapi-fetch": "^0.13.5"
+		"diff": "^8.0.3",
+		"openapi-fetch": "^0.13.5",
+		"pdfjs-dist": "^5.5.207"
 	},
 	"devDependencies": {
 		"@eslint/compat": "^1.4.0",
@@ -33,6 +35,7 @@
 		"@tailwindcss/forms": "^0.5.10",
 		"@tailwindcss/typography": "^0.5.19",
 		"@tailwindcss/vite": "^4.1.17",
+		"@types/diff": "^7.0.2",
 		"@types/node": "^24",
 		"@vitest/browser-playwright": "^4.0.10",
 		"eslint": "^9.39.1",

frontend/playwright.config.ts

@@ -12,7 +12,10 @@ export default defineConfig({
 	// The backend + DB + MinIO must be started separately (see README or CI workflow).
 	webServer: {
 		command: 'npm run dev -- --port 3000',
-		url: 'http://localhost:3000',
+		// Use the E2E_BASE_URL so that a pre-running server (e.g. the docker dev server
+		// on port 5173 during local development) is detected and reused without starting
+		// a new one. In CI the default is localhost:3000 where a fresh server is started.
+		url: process.env.E2E_BASE_URL ?? 'http://localhost:3000',
 		reuseExistingServer: true,
 		timeout: 120_000
 	},

frontend/src/hooks.server.ts

@@ -5,7 +5,7 @@ import { env } from 'process';
 import { cookieName, cookieMaxAge } from '$lib/paraglide/runtime';
 import { detectLocale } from '$lib/server/locale';
 
-const PUBLIC_PATHS = ['/login', '/logout'];
+const PUBLIC_PATHS = ['/login', '/logout', '/forgot-password', '/reset-password'];
 
 const handleLocaleDetection: Handle = ({ event, resolve }) => {
 	if (!event.cookies.get(cookieName)) {
@@ -71,6 +71,12 @@ export const handleFetch: HandleFetch = async ({ event, request, fetch }) => {
 			return fetch(request);
 		}
 
+		// Password reset endpoints are public — no auth header needed.
+		const PUBLIC_API_PATHS = ['/api/auth/forgot-password', '/api/auth/reset-password'];
+		if (PUBLIC_API_PATHS.some((p) => request.url.includes(p))) {
+			return fetch(request);
+		}
+
 		const token = event.cookies.get('auth_token');
 
 		if (!token) {

frontend/src/lib/components/ExpandableText.svelte

@@ -0,0 +1,33 @@
+<script lang="ts">
+import { m } from '$lib/paraglide/messages.js';
+
+let { text, maxLines = 10 }: { text: string; maxLines?: number } = $props();
+
+let expanded = $state(false);
+let el = $state<HTMLElement | undefined>(undefined);
+let isClamped = $state(false);
+
+$effect(() => {
+	if (el && !expanded) {
+		isClamped = el.scrollHeight > el.clientHeight;
+	}
+});
+</script>
+
+<div>
+	<div
+		bind:this={el}
+		style={!expanded ? `overflow: hidden; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: ${maxLines}` : ''}
+		class="rounded border border-brand-sand bg-brand-sand/30 p-5 font-serif text-sm leading-relaxed whitespace-pre-wrap text-brand-navy"
+	>
+		{text}
+	</div>
+	{#if isClamped || expanded}
+		<button
+			onclick={() => (expanded = !expanded)}
+			class="mt-2 font-sans text-xs text-gray-400 transition hover:text-brand-navy"
+		>
+			{expanded ? m.comp_expandable_show_less() : m.comp_expandable_show_more()}
+		</button>
+	{/if}
+</div>

frontend/src/lib/components/PdfViewer.svelte

@@ -0,0 +1,305 @@
+<script lang="ts">
+import { onMount } from 'svelte';
+import type { PDFDocumentProxy, PDFPageProxy, RenderTask } from 'pdfjs-dist';
+
+let { url }: { url: string } = $props();
+
+let pdfDoc = $state<PDFDocumentProxy | null>(null);
+let currentPage = $state(1);
+let totalPages = $state(0);
+let scale = $state(1.5);
+let loading = $state(false);
+let error = $state<string | null>(null);
+
+// Canvas and text layer container refs — bound via bind:this, not reactive state
+let canvasEl = $state<HTMLCanvasElement | null>(null);
+let textLayerEl = $state<HTMLDivElement | null>(null);
+
+// Internal mutable refs for in-flight tasks — NOT $state to avoid reactive loops
+let renderTask: RenderTask | null = null;
+let textLayerInstance: { cancel: () => void } | null = null;
+
+// Holds the dynamically-loaded pdfjs module (browser-only)
+// Not $state — we use pdfjsReady as the reactive trigger instead
+let pdfjsLib: typeof import('pdfjs-dist') | null = null;
+let pdfjsReady = $state(false);
+
+onMount(async () => {
+	// Dynamic import keeps pdfjs out of the SSR bundle entirely
+	const [lib, { default: workerUrl }] = await Promise.all([
+		import('pdfjs-dist'),
+		import('pdfjs-dist/build/pdf.worker.min.mjs?url')
+	]);
+	lib.GlobalWorkerOptions.workerSrc = workerUrl;
+	pdfjsLib = lib;
+	pdfjsReady = true;
+});
+
+async function loadDocument(src: string) {
+	if (!pdfjsLib) return;
+	loading = true;
+	error = null;
+	pdfDoc = null;
+	currentPage = 1;
+	totalPages = 0;
+
+	try {
+		const loadingTask = pdfjsLib.getDocument(src);
+		const doc = await loadingTask.promise;
+		pdfDoc = doc;
+		totalPages = doc.numPages;
+	} catch (e) {
+		error = e instanceof Error ? e.message : 'Failed to load PDF';
+	} finally {
+		loading = false;
+	}
+}
+
+async function renderPage(doc: PDFDocumentProxy, pageNum: number) {
+	if (!pdfjsLib || !canvasEl || !textLayerEl) return;
+
+	// Cancel any in-flight render
+	if (renderTask) {
+		renderTask.cancel();
+		renderTask = null;
+	}
+	if (textLayerInstance) {
+		textLayerInstance.cancel();
+		textLayerInstance = null;
+	}
+
+	let page: PDFPageProxy;
+	try {
+		page = await doc.getPage(pageNum);
+	} catch {
+		return;
+	}
+
+	const dpr = window.devicePixelRatio || 1;
+	const viewport = page.getViewport({ scale: scale * dpr });
+
+	const canvas = canvasEl;
+	const ctx = canvas.getContext('2d');
+	if (!ctx) return;
+
+	canvas.width = viewport.width;
+	canvas.height = viewport.height;
+	canvas.style.width = `${viewport.width / dpr}px`;
+	canvas.style.height = `${viewport.height / dpr}px`;
+
+	const task = page.render({ canvas, canvasContext: ctx, viewport });
+	renderTask = task;
+
+	try {
+		await task.promise;
+	} catch (e: unknown) {
+		if (
+			typeof e === 'object' &&
+			e !== null &&
+			'name' in e &&
+			(e as { name: string }).name === 'RenderingCancelledException'
+		)
+			return;
+		return;
+	}
+	renderTask = null;
+
+	// Text layer
+	const textDiv = textLayerEl;
+	textDiv.innerHTML = '';
+	textDiv.style.width = `${viewport.width / dpr}px`;
+	textDiv.style.height = `${viewport.height / dpr}px`;
+
+	const tl = new pdfjsLib.TextLayer({
+		textContentSource: page.streamTextContent(),
+		container: textDiv,
+		viewport
+	});
+	textLayerInstance = tl;
+	try {
+		await tl.render();
+	} catch {
+		// cancelled
+	}
+}
+
+async function prerender(doc: PDFDocumentProxy, pageNum: number) {
+	const neighbors = [pageNum - 1, pageNum + 1].filter((n) => n >= 1 && n <= doc.numPages);
+	for (const n of neighbors) {
+		try {
+			await doc.getPage(n);
+		} catch {
+			// ignore
+		}
+	}
+}
+
+$effect(() => {
+	if (pdfjsReady && url) {
+		loadDocument(url);
+	}
+});
+
+$effect(() => {
+	// Read scale synchronously so Svelte tracks it as a dependency.
+	// Without this, zoom changes don't re-trigger the effect because
+	// scale is only read inside the async renderPage call.
+	if (pdfDoc && currentPage && scale > 0) {
+		renderPage(pdfDoc, currentPage).then(() => {
+			if (pdfDoc) prerender(pdfDoc, currentPage);
+		});
+	}
+});
+
+function prevPage() {
+	if (currentPage > 1) currentPage -= 1;
+}
+
+function nextPage() {
+	if (pdfDoc && currentPage < pdfDoc.numPages) currentPage += 1;
+}
+
+function zoomIn() {
+	scale += 0.25;
+}
+
+function zoomOut() {
+	if (scale > 0.5) scale -= 0.25;
+}
+</script>
+
+{#if !url}
+	<div class="flex h-full w-full items-center justify-center bg-[#2A2A2A] text-gray-400">
+		<p class="font-sans text-sm">Keine Datei vorhanden</p>
+	</div>
+{:else if error}
+	<div
+		class="flex h-full w-full flex-col items-center justify-center gap-3 bg-[#2A2A2A] text-gray-300"
+	>
+		<p class="font-sans text-sm text-red-400">Fehler beim Laden der PDF</p>
+		<a
+			href={url}
+			target="_blank"
+			rel="noopener noreferrer"
+			class="font-sans text-xs text-brand-mint underline hover:opacity-80"
+		>
+			Direkt öffnen
+		</a>
+	</div>
+{:else}
+	<div class="flex h-full w-full flex-col bg-[#2A2A2A]">
+		<!-- Controls -->
+		<div
+			class="flex shrink-0 items-center justify-between gap-2 border-b border-white/10 px-4 py-2"
+		>
+			<!-- Page navigation -->
+			<div class="flex items-center gap-2">
+				<button
+					onclick={prevPage}
+					disabled={currentPage <= 1}
+					aria-label="Zurück"
+					class="rounded p-1 text-gray-300 transition hover:bg-white/10 disabled:opacity-40"
+				>
+					<svg
+						class="h-4 w-4"
+						viewBox="0 0 24 24"
+						fill="none"
+						stroke="currentColor"
+						stroke-width="2"
+					>
+						<path stroke-linecap="round" stroke-linejoin="round" d="M15 19l-7-7 7-7" />
+					</svg>
+				</button>
+
+				{#if totalPages > 0}
+					<span class="font-sans text-xs text-gray-300 tabular-nums">
+						{currentPage} / {totalPages}
+					</span>
+				{/if}
+
+				<button
+					onclick={nextPage}
+					disabled={!pdfDoc || currentPage >= totalPages}
+					aria-label="Weiter"
+					class="rounded p-1 text-gray-300 transition hover:bg-white/10 disabled:opacity-40"
+				>
+					<svg
+						class="h-4 w-4"
+						viewBox="0 0 24 24"
+						fill="none"
+						stroke="currentColor"
+						stroke-width="2"
+					>
+						<path stroke-linecap="round" stroke-linejoin="round" d="M9 5l7 7-7 7" />
+					</svg>
+				</button>
+			</div>
+
+			<!-- Zoom controls -->
+			<div class="flex items-center gap-1">
+				<button
+					onclick={zoomOut}
+					aria-label="Verkleinern"
+					class="rounded p-1 text-gray-300 transition hover:bg-white/10"
+				>
+					<svg
+						class="h-4 w-4"
+						viewBox="0 0 24 24"
+						fill="none"
+						stroke="currentColor"
+						stroke-width="2"
+					>
+						<circle cx="11" cy="11" r="8" /><path
+							stroke-linecap="round"
+							d="M21 21l-4.35-4.35M8 11h6"
+						/>
+					</svg>
+				</button>
+				<button
+					onclick={zoomIn}
+					aria-label="Vergrößern"
+					class="rounded p-1 text-gray-300 transition hover:bg-white/10"
+				>
+					<svg
+						class="h-4 w-4"
+						viewBox="0 0 24 24"
+						fill="none"
+						stroke="currentColor"
+						stroke-width="2"
+					>
+						<circle cx="11" cy="11" r="8" /><path
+							stroke-linecap="round"
+							d="M21 21l-4.35-4.35M11 8v6M8 11h6"
+						/>
+					</svg>
+				</button>
+			</div>
+		</div>
+
+		<!-- PDF canvas area -->
+		<div class="relative flex-1 overflow-auto">
+			{#if loading}
+				<div class="flex h-full items-center justify-center">
+					<div
+						class="h-8 w-8 animate-spin rounded-full border-2 border-white/20 border-t-white"
+					></div>
+				</div>
+			{:else}
+				<div class="flex min-h-full items-start justify-center p-4">
+					<div
+						class="pdf-page relative shadow-xl"
+						data-page-number={currentPage}
+						style="position: relative"
+					>
+						<canvas bind:this={canvasEl}></canvas>
+						<div
+							bind:this={textLayerEl}
+							class="textLayer"
+							style="position: absolute; top: 0; left: 0; overflow: hidden; pointer-events: none; line-height: 1;"
+						></div>
+					</div>
+				</div>
+			{/if}
+		</div>
+	</div>
+{/if}

frontend/src/lib/components/PdfViewer.svelte.spec.ts

@@ -0,0 +1,53 @@
+import { vi, describe, it, expect, afterEach } from 'vitest';
+import { cleanup, render } from 'vitest-browser-svelte';
+import { page } from 'vitest/browser';
+
+// pdfjs-dist is a rendering dependency — we mock it so unit tests don't need
+// a real browser PDF engine. The interesting behaviour under test here is the
+// component's own UI logic (controls, page counter), not pdfjs internals.
+vi.mock('pdfjs-dist', () => {
+	function TextLayerMock() {}
+	TextLayerMock.prototype.render = () => Promise.resolve();
+	TextLayerMock.prototype.cancel = () => {};
+
+	return {
+		GlobalWorkerOptions: { workerSrc: '' },
+		getDocument: vi.fn().mockReturnValue({
+			promise: Promise.resolve({
+				numPages: 2,
+				getPage: vi.fn().mockResolvedValue({
+					getViewport: vi.fn().mockReturnValue({ width: 595, height: 842 }),
+					render: vi.fn().mockReturnValue({ promise: Promise.resolve() }),
+					streamTextContent: vi.fn().mockReturnValue(new ReadableStream())
+				})
+			})
+		}),
+		TextLayer: TextLayerMock
+	};
+});
+
+vi.mock('pdfjs-dist/build/pdf.worker.min.mjs?url', () => ({ default: '' }));
+
+import PdfViewer from './PdfViewer.svelte';
+
+afterEach(cleanup);
+
+describe('PdfViewer', () => {
+	it('shows previous and next page navigation buttons', async () => {
+		render(PdfViewer, { url: '/api/documents/test-id/file' });
+		await expect.element(page.getByRole('button', { name: /zurück/i })).toBeInTheDocument();
+		await expect.element(page.getByRole('button', { name: /weiter/i })).toBeInTheDocument();
+	});
+
+	it('shows zoom controls', async () => {
+		render(PdfViewer, { url: '/api/documents/test-id/file' });
+		await expect.element(page.getByRole('button', { name: /vergrößern/i })).toBeInTheDocument();
+		await expect.element(page.getByRole('button', { name: /verkleinern/i })).toBeInTheDocument();
+	});
+
+	it('displays the page counter once the PDF has loaded', async () => {
+		render(PdfViewer, { url: '/api/documents/test-id/file' });
+		// Mock resolves synchronously, so "1 / 2" should appear quickly
+		await expect.element(page.getByText(/1\s*\/\s*2/)).toBeInTheDocument();
+	});
+});

frontend/src/lib/errors.ts

@@ -13,6 +13,7 @@ export type ErrorCode =
 	| 'EMAIL_ALREADY_IN_USE'
 	| 'WRONG_CURRENT_PASSWORD'
 	| 'IMPORT_ALREADY_RUNNING'
+	| 'INVALID_RESET_TOKEN'
 	| 'UNAUTHORIZED'
 	| 'FORBIDDEN'
 	| 'VALIDATION_ERROR'
@@ -58,6 +59,8 @@ export function getErrorMessage(code: ErrorCode | string | undefined): string {
 			return m.error_wrong_current_password();
 		case 'IMPORT_ALREADY_RUNNING':
 			return m.error_import_already_running();
+		case 'INVALID_RESET_TOKEN':
+			return m.error_invalid_reset_token();
 		case 'UNAUTHORIZED':
 			return m.error_unauthorized();
 		case 'FORBIDDEN':

frontend/src/lib/generated/api.ts

@@ -4,6 +4,22 @@
  */
 
 export interface paths {
+    "/api/users/{id}": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get: operations["getUser"];
+        put: operations["adminUpdateUser"];
+        post?: never;
+        delete: operations["deleteUser"];
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/api/users/me": {
         parameters: {
             query?: never;
@@ -164,6 +180,38 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/api/auth/reset-password": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        post: operations["resetPassword"];
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/api/auth/forgot-password": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        post: operations["forgotPassword"];
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/api/admin/trigger-import": {
         parameters: {
             query?: never;
@@ -180,6 +228,22 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/api/admin/backfill-versions": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        post: operations["backfillVersions"];
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/api/groups/{id}": {
         parameters: {
             query?: never;
@@ -196,22 +260,6 @@ export interface paths {
         patch: operations["updateGroup"];
         trace?: never;
     };
-    "/api/users/{id}": {
-        parameters: {
-            query?: never;
-            header?: never;
-            path?: never;
-            cookie?: never;
-        };
-        get: operations["getUser"];
-        put?: never;
-        post?: never;
-        delete: operations["deleteUser"];
-        options?: never;
-        head?: never;
-        patch?: never;
-        trace?: never;
-    };
     "/api/tags": {
         parameters: {
             query?: never;
@@ -276,6 +324,38 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/api/documents/{id}/versions": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get: operations["getVersions"];
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/api/documents/{id}/versions/{versionId}": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get: operations["getVersion"];
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/api/documents/{id}/file": {
         parameters: {
             query?: never;
@@ -344,13 +424,15 @@ export interface paths {
 export type webhooks = Record<string, never>;
 export interface components {
     schemas: {
-        UpdateProfileDTO: {
+        AdminUpdateUserRequest: {
             firstName?: string;
             lastName?: string;
             /** Format: date */
             birthDate?: string;
             email?: string;
             contact?: string;
+            newPassword?: string;
+            groupIds?: string[];
         };
         AppUser: {
             /** Format: uuid */
@@ -374,6 +456,14 @@ export interface components {
             name: string;
             permissions: string[];
         };
+        UpdateProfileDTO: {
+            firstName?: string;
+            lastName?: string;
+            /** Format: date */
+            birthDate?: string;
+            email?: string;
+            contact?: string;
+        };
         Tag: {
             /** Format: uuid */
             id: string;
@@ -444,6 +534,11 @@ export interface components {
             email?: string;
             initialPassword?: string;
             groupIds?: string[];
+            firstName?: string;
+            lastName?: string;
+            /** Format: date */
+            birthDate?: string;
+            contact?: string;
         };
         ChangePasswordDTO: {
             currentPassword?: string;
@@ -453,6 +548,13 @@ export interface components {
             name?: string;
             permissions?: string[];
         };
+        ResetPasswordRequest: {
+            token?: string;
+            newPassword?: string;
+        };
+        ForgotPasswordRequest: {
+            email?: string;
+        };
         ImportStatus: {
             /** @enum {string} */
             state?: "IDLE" | "RUNNING" | "DONE" | "FAILED";
@@ -462,6 +564,31 @@ export interface components {
             /** Format: date-time */
             startedAt?: string;
         };
+        BackfillResult: {
+            /** Format: int32 */
+            count: number;
+        };
+        DocumentVersionSummary: {
+            /** Format: uuid */
+            id: string;
+            /** Format: date-time */
+            savedAt: string;
+            editorName: string;
+            changedFields: string[];
+        };
+        DocumentVersion: {
+            /** Format: uuid */
+            id: string;
+            /** Format: uuid */
+            documentId: string;
+            /** Format: date-time */
+            savedAt: string;
+            /** Format: uuid */
+            editorId?: string;
+            editorName: string;
+            snapshot: string;
+            changedFields: string;
+        };
     };
     responses: never;
     parameters: never;
@@ -471,6 +598,74 @@ export interface components {
 }
 export type $defs = Record<string, never>;
 export interface operations {
+    getUser: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                id: string;
+            };
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description OK */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "*/*": components["schemas"]["AppUser"];
+                };
+            };
+        };
+    };
+    adminUpdateUser: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                id: string;
+            };
+            cookie?: never;
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["AdminUpdateUserRequest"];
+            };
+        };
+        responses: {
+            /** @description OK */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "*/*": components["schemas"]["AppUser"];
+                };
+            };
+        };
+    };
+    deleteUser: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                id: string;
+            };
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description OK */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content?: never;
+            };
+        };
+    };
     getCurrentUser: {
         parameters: {
             query?: never;
@@ -867,6 +1062,50 @@ export interface operations {
             };
         };
     };
+    resetPassword: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["ResetPasswordRequest"];
+            };
+        };
+        responses: {
+            /** @description OK */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content?: never;
+            };
+        };
+    };
+    forgotPassword: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["ForgotPasswordRequest"];
+            };
+        };
+        responses: {
+            /** @description OK */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content?: never;
+            };
+        };
+    };
     triggerMassImport: {
         parameters: {
             query?: never;
@@ -887,6 +1126,26 @@ export interface operations {
             };
         };
     };
+    backfillVersions: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description OK */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "*/*": components["schemas"]["BackfillResult"];
+                };
+            };
+        };
+    };
     deleteGroup: {
         parameters: {
             query?: never;
@@ -933,48 +1192,6 @@ export interface operations {
             };
         };
     };
-    getUser: {
-        parameters: {
-            query?: never;
-            header?: never;
-            path: {
-                id: string;
-            };
-            cookie?: never;
-        };
-        requestBody?: never;
-        responses: {
-            /** @description OK */
-            200: {
-                headers: {
-                    [name: string]: unknown;
-                };
-                content: {
-                    "*/*": components["schemas"]["AppUser"];
-                };
-            };
-        };
-    };
-    deleteUser: {
-        parameters: {
-            query?: never;
-            header?: never;
-            path: {
-                id: string;
-            };
-            cookie?: never;
-        };
-        requestBody?: never;
-        responses: {
-            /** @description OK */
-            200: {
-                headers: {
-                    [name: string]: unknown;
-                };
-                content?: never;
-            };
-        };
-    };
     searchTags: {
         parameters: {
             query?: {
@@ -1065,6 +1282,51 @@ export interface operations {
             };
         };
     };
+    getVersions: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                id: string;
+            };
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description OK */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "*/*": components["schemas"]["DocumentVersionSummary"][];
+                };
+            };
+        };
+    };
+    getVersion: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                id: string;
+                versionId: string;
+            };
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description OK */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "*/*": components["schemas"]["DocumentVersion"];
+                };
+            };
+        };
+    };
     getDocumentFile: {
         parameters: {
             query?: never;

frontend/src/routes/+layout.svelte

@@ -46,7 +46,7 @@ function clickOutside(node: HTMLElement) {
 </script>
 
 <div class="min-h-screen bg-white" data-hydrated={hydrated || undefined}>
-	{#if !page.url.pathname.startsWith('/login')}
+	{#if !['/login', '/forgot-password', '/reset-password'].some((p) => page.url.pathname.startsWith(p))}
 		<header class="sticky top-0 z-50 border-b border-gray-100 bg-white">
 			<!-- De Gruyter Brill purple accent strip -->
 			<div class="h-1 bg-brand-purple"></div>

frontend/src/routes/admin/+page.server.ts

@@ -35,21 +35,6 @@ export async function load({ fetch, locals }) {
 }
 
 export const actions = {
-	createUser: async ({ request, fetch }) => {
-		const data = await request.formData();
-		const api = createApiClient(fetch);
-
-		const result = await api.POST('/api/users', {
-			body: {
-				username: data.get('username') as string,
-				initialPassword: data.get('password') as string,
-				groupIds: data.getAll('groupIds') as string[]
-			}
-		});
-
-		return toActionResult(result);
-	},
-
 	deleteUser: async ({ request, fetch }) => {
 		const data = await request.formData();
 		const id = data.get('id') as string;

frontend/src/routes/admin/+page.svelte

@@ -8,8 +8,9 @@ let { data, form } = $props();
 let activeTab = $state('users');
 let editingTagId: string | null = $state(null);
 let editingTagName = $state('');
-let editingUserId: string | null = $state(null);
 let editingGroupId: string | null = $state(null);
+let backfillResult: number | null = $state(null);
+let backfillLoading = $state(false);
 
 const availablePermissions = ['WRITE_ALL', 'ADMIN', 'ADMIN_USER', 'ADMIN_TAG', 'ADMIN_PERMISSION'];
 
@@ -23,14 +24,6 @@ function cancelEditTag() {
 	editingTagName = '';
 }
 
-function startEditUser(id: string) {
-	editingUserId = id;
-}
-
-function cancelEditUser() {
-	editingUserId = null;
-}
-
 function startEditGroup(id: string) {
 	editingGroupId = id;
 }
@@ -38,6 +31,20 @@ function startEditGroup(id: string) {
 function cancelEditGroup() {
 	editingGroupId = null;
 }
+
+async function backfillVersions() {
+	backfillLoading = true;
+	backfillResult = null;
+	try {
+		const res = await fetch('/api/admin/backfill-versions', { method: 'POST' });
+		if (res.ok) {
+			const data = await res.json();
+			backfillResult = data.count;
+		}
+	} finally {
+		backfillLoading = false;
+	}
+}
 </script>
 
 <div class="mx-auto max-w-7xl py-8 font-sans sm:px-6 lg:px-8">
@@ -67,6 +74,13 @@ function cancelEditGroup() {
 					: 'text-gray-500 hover:text-brand-navy'}"
 				onclick={() => (activeTab = 'tags')}>{m.admin_tab_tags()}</button
 			>
+			<button
+				class="rounded-md px-4 py-2 text-sm font-bold tracking-wide uppercase transition {activeTab ===
+				'system'
+					? 'bg-brand-navy text-white'
+					: 'text-gray-500 hover:text-brand-navy'}"
+				onclick={() => (activeTab = 'system')}>{m.admin_tab_system()}</button
+			>
 		</div>
 	</div>
 
@@ -80,6 +94,20 @@ function cancelEditGroup() {
 		<div class="overflow-hidden rounded-lg border border-brand-sand bg-white shadow-sm" in:slide>
 			<div class="flex items-center justify-between border-b border-gray-100 p-6">
 				<h2 class="text-lg font-bold text-gray-700">{m.admin_section_users()}</h2>
+				<a
+					href="/admin/users/new"
+					class="inline-flex items-center gap-1 rounded-sm bg-brand-navy px-4 py-2 font-sans text-xs font-bold tracking-widest text-white uppercase transition-opacity hover:opacity-80"
+				>
+					<svg class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+						<path
+							stroke-linecap="round"
+							stroke-linejoin="round"
+							stroke-width="2"
+							d="M12 4v16m8-8H4"
+						/>
+					</svg>
+					{m.admin_btn_new_user()}
+				</a>
 			</div>
 
 			<table class="min-w-full divide-y divide-gray-200">
@@ -88,200 +116,89 @@ function cancelEditGroup() {
 						<th class="px-6 py-3 text-left text-xs font-bold tracking-wider text-gray-500 uppercase"
 							>{m.admin_col_login()}</th
 						>
+						<th class="px-6 py-3 text-left text-xs font-bold tracking-wider text-gray-500 uppercase"
+							>{m.admin_col_full_name()}</th
+						>
 						<th class="px-6 py-3 text-left text-xs font-bold tracking-wider text-gray-500 uppercase"
 							>{m.admin_col_groups()}</th
 						>
-						{#if editingUserId}
-							<th
-								class="px-6 py-3 text-right text-xs font-bold tracking-wider text-gray-500 uppercase"
-								>{m.admin_col_password()}</th
-							>
-						{/if}
+						<th
+							class="px-6 py-3 text-right text-xs font-bold tracking-wider text-gray-500 uppercase"
+							>{m.admin_col_actions()}</th
+						>
 					</tr>
 				</thead>
 				<tbody class="divide-y divide-gray-200 bg-white">
 					{#each data.users as user (user.id)}
 						<tr class="group/row hover:bg-gray-50">
-							{#if editingUserId === user.id}
-								<!-- === EDIT MODE === -->
-								<td class="px-6 py-4 text-sm whitespace-nowrap text-gray-500">
-									{user.username}
-									<input
-										type="hidden"
-										name="username"
-										value={user.username}
-										form="edit-form-{user.id}"
-									/>
-								</td>
-
-								<td class="px-6 py-4 text-sm">
-									<select
-										name="groupIds"
-										multiple
-										form="edit-form-{user.id}"
-										class="block min-h-[80px] w-full rounded border-brand-mint p-1 text-xs"
-									>
-										{#each data.groups as group (group.id)}
-											<option
-												value={group.id}
-												selected={user.groups.some((g: { id: string }) => g.id === group.id)}
+							<td class="px-6 py-4 text-sm font-medium whitespace-nowrap text-gray-900">
+								{user.username}
+							</td>
+							<td class="px-6 py-4 text-sm whitespace-nowrap text-gray-500">
+								{#if user.firstName || user.lastName}
+									{user.firstName ?? ''} {user.lastName ?? ''}
+								{:else}
+									<span class="text-gray-300 italic">–</span>
+								{/if}
+							</td>
+							<td class="px-6 py-4 text-sm text-gray-500">
+								<div class="flex flex-wrap gap-1">
+									{#if user.groups && user.groups.length > 0}
+										{#each user.groups as group (group.id)}
+											<span
+												class="rounded-full border border-blue-100 bg-blue-50 px-2 py-0.5 text-[10px] font-bold text-blue-700 uppercase"
 											>
 												{group.name}
-											</option>
+											</span>
 										{/each}
-									</select>
-									<p class="mt-1 text-[10px] text-gray-400">{m.admin_multiselect_hint()}</p>
-								</td>
-
-								<td class="px-6 py-4 text-right align-top whitespace-nowrap">
-									<form
-										id="edit-form-{user.id}"
-										method="POST"
-										action="?/createUser"
-										use:enhance={() =>
-											async ({ update }) => {
-												await update();
-												cancelEditUser();
-											}}
-										class="flex flex-col items-end gap-2"
+									{:else}
+										<span class="text-xs text-gray-400 italic">{m.admin_no_groups()}</span>
+									{/if}
+								</div>
+							</td>
+							<td class="px-6 py-4 text-right whitespace-nowrap">
+								<div class="flex items-center justify-end gap-4">
+									<a
+										href="/admin/users/{user.id}"
+										class="text-sm font-bold tracking-wide text-brand-mint uppercase hover:text-brand-navy"
 									>
-										<input
-											type="password"
-											name="password"
-											placeholder={m.admin_password_placeholder()}
-											class="w-32 rounded border border-brand-mint px-2 py-1 text-xs"
-										/>
+										{m.btn_edit()}
+									</a>
 
-										<div class="mt-1 flex gap-2">
-											<button
-												type="submit"
-												class="rounded bg-green-600 px-2 py-1 text-xs font-bold text-white uppercase hover:bg-green-700"
-											>
-												{m.btn_save()}
-											</button>
-											<button
-												type="button"
-												onclick={cancelEditUser}
-												class="rounded bg-gray-200 px-2 py-1 text-xs font-bold text-gray-600 uppercase hover:bg-gray-300"
-											>
-												{m.btn_cancel()}
-											</button>
-										</div>
-									</form>
-								</td>
-							{:else}
-								<!-- === VIEW MODE === -->
-								<td class="px-6 py-4 text-sm whitespace-nowrap text-gray-500">
-									{user.username}
-								</td>
-								<td class="px-6 py-4 text-sm text-gray-500">
-									<div class="flex flex-wrap gap-1">
-										{#if user.groups && user.groups.length > 0}
-											{#each user.groups as group (group.id)}
-												<span
-													class="rounded-full border border-blue-100 bg-blue-50 px-2 py-0.5 text-[10px] font-bold text-blue-700 uppercase"
-												>
-													{group.name}
-												</span>
-											{/each}
-										{:else}
-											<span class="text-xs text-gray-400 italic">{m.admin_no_groups()}</span>
-										{/if}
-									</div>
-								</td>
-								<td class="px-6 py-4 text-right whitespace-nowrap">
-									<div class="flex items-center justify-end gap-4">
+									<form
+										method="POST"
+										action="?/deleteUser"
+										use:enhance={({ cancel }) => {
+											if (!confirm(m.admin_user_delete_confirm({ username: user.username }))) {
+												cancel();
+											}
+											return async ({ update }) => {
+												await update();
+											};
+										}}
+										class="flex items-center"
+									>
+										<input type="hidden" name="id" value={user.id} />
 										<button
-											onclick={() => startEditUser(user.id)}
-											class="text-sm font-bold tracking-wide text-brand-mint uppercase hover:text-brand-navy"
+											class="p-1 text-gray-300 transition-colors hover:text-red-600"
+											title={m.admin_btn_delete_user_title()}
 										>
-											{m.btn_edit()}
+											<svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+												<path
+													stroke-linecap="round"
+													stroke-linejoin="round"
+													stroke-width="2"
+													d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"
+												/>
+											</svg>
 										</button>
-
-										<form
-											method="POST"
-											action="?/deleteUser"
-											use:enhance={({ cancel }) => {
-												if (!confirm(m.admin_user_delete_confirm({ username: user.username }))) {
-													cancel();
-												}
-												return async ({ update }) => {
-													await update();
-												};
-											}}
-											class="flex items-center"
-										>
-											<input type="hidden" name="id" value={user.id} />
-											<button
-												class="p-1 text-gray-300 transition-colors hover:text-red-600"
-												title={m.admin_btn_delete_user_title()}
-											>
-												<svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-													<path
-														stroke-linecap="round"
-														stroke-linejoin="round"
-														stroke-width="2"
-														d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"
-													/>
-												</svg>
-											</button>
-										</form>
-									</div>
-								</td>
-							{/if}
+									</form>
+								</div>
+							</td>
 						</tr>
 					{/each}
 				</tbody>
 			</table>
-
-			<!-- Create User Form -->
-			<div class="border-t border-gray-200 bg-gray-50 p-6">
-				<h3 class="mb-4 text-xs font-bold tracking-wide text-gray-500 uppercase">
-					{m.admin_section_new_user()}
-				</h3>
-				<form
-					method="POST"
-					action="?/createUser"
-					use:enhance
-					class="grid grid-cols-1 items-start gap-4 md:grid-cols-6"
-				>
-					<input
-						type="text"
-						name="username"
-						placeholder="Login"
-						required
-						class="w-full rounded border-gray-300 text-sm"
-					/>
-					<input
-						type="password"
-						name="password"
-						placeholder={m.admin_col_password()}
-						required
-						class="w-full rounded border-gray-300 text-sm"
-					/>
-
-					<div class="md:col-span-3">
-						<select
-							name="groupIds"
-							multiple
-							class="h-[42px] w-full rounded border-gray-300 py-1 text-sm"
-							required
-							title={m.admin_multiselect_hint_multi()}
-						>
-							{#each data.groups as group (group.id)}
-								<option value={group.id}>{group.name}</option>
-							{/each}
-						</select>
-						<p class="mt-1 text-[10px] text-gray-400">{m.admin_multiselect_hint_full()}</p>
-					</div>
-
-					<button
-						type="submit"
-						class="h-[42px] w-full rounded bg-brand-navy text-sm font-bold text-white uppercase hover:bg-brand-mint hover:text-brand-navy"
-						>{m.btn_create()}</button
-					>
-				</form>
-			</div>
 		</div>
 	{:else if activeTab === 'tags'}
 		<div class="overflow-hidden rounded-lg border border-brand-sand bg-white shadow-sm" in:slide>
@@ -601,5 +518,22 @@ function cancelEditGroup() {
 				</form>
 			</div>
 		</div>
+	{:else if activeTab === 'system'}
+		<div class="rounded-sm border border-brand-sand bg-white p-6 shadow-sm">
+			<h2 class="mb-1 text-lg font-bold text-gray-700">{m.admin_system_backfill_heading()}</h2>
+			<p class="mb-4 text-sm text-gray-500">{m.admin_system_backfill_description()}</p>
+			<button
+				onclick={backfillVersions}
+				disabled={backfillLoading}
+				class="rounded bg-brand-navy px-6 py-2 text-sm font-bold text-white uppercase transition hover:bg-brand-mint hover:text-brand-navy disabled:cursor-not-allowed disabled:opacity-50"
+			>
+				{backfillLoading ? '…' : m.admin_system_backfill_btn()}
+			</button>
+			{#if backfillResult !== null}
+				<p class="mt-4 text-sm font-medium text-brand-navy">
+					{m.admin_system_backfill_success({ count: backfillResult })}
+				</p>
+			{/if}
+		</div>
 	{/if}
 </div>

frontend/src/routes/admin/page.svelte.spec.ts

@@ -0,0 +1,82 @@
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { cleanup, render } from 'vitest-browser-svelte';
+import { page } from 'vitest/browser';
+import Page from './+page.svelte';
+
+vi.mock('$app/forms', () => ({ enhance: () => () => {} }));
+
+const makeGroup = (overrides = {}) => ({
+	id: 'g1',
+	name: 'Editoren',
+	permissions: ['WRITE_ALL'],
+	...overrides
+});
+
+const makeUser = (overrides = {}) => ({
+	id: 'u1',
+	username: 'max',
+	firstName: 'Max',
+	lastName: 'Mustermann',
+	email: 'max@example.com',
+	birthDate: undefined,
+	contact: undefined,
+	enabled: true,
+	groups: [makeGroup()],
+	createdAt: '2024-01-01T00:00:00Z',
+	...overrides
+});
+
+const baseData = {
+	user: undefined,
+	canWrite: true,
+	users: [makeUser()],
+	groups: [makeGroup()],
+	tags: []
+};
+
+afterEach(cleanup);
+
+// ─── Users tab ────────────────────────────────────────────────────────────────
+
+describe('Admin page – users tab', () => {
+	it('shows the username in the table', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect.element(page.getByRole('cell', { name: 'max', exact: true })).toBeInTheDocument();
+	});
+
+	it('shows the full name in the table', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect.element(page.getByText(/Max Mustermann/)).toBeInTheDocument();
+	});
+
+	it('shows a dash when user has no name set', async () => {
+		const data = { ...baseData, users: [makeUser({ firstName: undefined, lastName: undefined })] };
+		render(Page, { data, form: null });
+		await expect.element(page.getByText('–')).toBeInTheDocument();
+	});
+
+	it('shows group badges for the user', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect.element(page.getByText('Editoren')).toBeInTheDocument();
+	});
+
+	it('edit link points to /admin/users/[id]', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect
+			.element(page.getByRole('link', { name: /Bearbeiten/i }))
+			.toHaveAttribute('href', '/admin/users/u1');
+	});
+
+	it('new user button links to /admin/users/new', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect
+			.element(page.getByRole('link', { name: /Neuer Benutzer/i }))
+			.toHaveAttribute('href', '/admin/users/new');
+	});
+
+	it('shows "no groups" label when user has no groups', async () => {
+		const data = { ...baseData, users: [makeUser({ groups: [] })] };
+		render(Page, { data, form: null });
+		await expect.element(page.getByText(/Keine Gruppen/i)).toBeInTheDocument();
+	});
+});

frontend/src/routes/admin/users/[id]/+page.server.ts

@@ -0,0 +1,67 @@
+import { error, fail } from '@sveltejs/kit';
+import type { PageServerLoad, Actions } from './$types';
+import { createApiClient } from '$lib/api.server';
+import { getErrorMessage } from '$lib/errors';
+
+export const load: PageServerLoad = async ({ params, fetch, locals }) => {
+	const user = locals.user;
+	const hasAdmin = user?.groups?.some((g: { permissions: string[] }) =>
+		g.permissions.includes('ADMIN')
+	);
+	if (!hasAdmin) throw error(403, getErrorMessage('FORBIDDEN'));
+
+	const api = createApiClient(fetch);
+	const [userResult, groupsResult] = await Promise.all([
+		api.GET('/api/users/{id}', { params: { path: { id: params.id } } }),
+		api.GET('/api/groups')
+	]);
+
+	if (!userResult.response.ok) throw error(404, getErrorMessage('USER_NOT_FOUND'));
+
+	return {
+		editUser: userResult.data!,
+		groups: groupsResult.data ?? []
+	};
+};
+
+export const actions: Actions = {
+	default: async ({ params, request, fetch }) => {
+		const data = await request.formData();
+
+		const newPassword = data.get('newPassword') as string;
+		const confirmPassword = data.get('confirmPassword') as string;
+		if (newPassword && newPassword !== confirmPassword) {
+			return fail(400, { error: getErrorMessage('PASSWORDS_DO_NOT_MATCH') });
+		}
+
+		const birthDateRaw = data.get('birthDate') as string;
+		const body = {
+			firstName: (data.get('firstName') as string) || null,
+			lastName: (data.get('lastName') as string) || null,
+			birthDate: birthDateRaw || null,
+			email: (data.get('email') as string) || null,
+			contact: (data.get('contact') as string) || null,
+			newPassword: newPassword || null,
+			groupIds: data.getAll('groupIds') as string[]
+		};
+
+		const res = await fetch(`/api/users/${params.id}`, {
+			method: 'PUT',
+			headers: { 'Content-Type': 'application/json' },
+			body: JSON.stringify(body)
+		});
+
+		if (!res.ok) {
+			let code: string | undefined;
+			try {
+				const json = await res.json();
+				code = json?.code;
+			} catch {
+				// ignore
+			}
+			return fail(res.status, { error: getErrorMessage(code) });
+		}
+
+		return { success: true };
+	}
+};

frontend/src/routes/admin/users/[id]/+page.svelte

@@ -0,0 +1,233 @@
+<script lang="ts">
+import { enhance } from '$app/forms';
+import { untrack } from 'svelte';
+import { m } from '$lib/paraglide/messages.js';
+
+let { data, form } = $props();
+
+function isoToGerman(iso: string | undefined): string {
+	if (!iso) return '';
+	const match = iso.match(/^(\d{4})-(\d{2})-(\d{2})$/);
+	if (!match) return '';
+	return `${match[3]}.${match[2]}.${match[1]}`;
+}
+
+function germanToIso(german: string): string {
+	const match = german.match(/^(\d{2})\.(\d{2})\.(\d{4})$/);
+	if (!match) return '';
+	return `${match[3]}-${match[2]}-${match[1]}`;
+}
+
+let birthDateDisplay = $state(untrack(() => isoToGerman(data.editUser?.birthDate)));
+let birthDateIso = $state(untrack(() => data.editUser?.birthDate ?? ''));
+
+function handleBirthDateInput(e: Event) {
+	const input = e.target as HTMLInputElement;
+	const digits = input.value.replace(/\D/g, '').slice(0, 8);
+	let formatted: string;
+	if (digits.length <= 2) {
+		formatted = digits;
+	} else if (digits.length <= 4) {
+		formatted = `${digits.slice(0, 2)}.${digits.slice(2)}`;
+	} else {
+		formatted = `${digits.slice(0, 2)}.${digits.slice(2, 4)}.${digits.slice(4)}`;
+	}
+	input.value = formatted;
+	birthDateDisplay = formatted;
+	birthDateIso = germanToIso(formatted);
+}
+</script>
+
+<div class="mx-auto max-w-3xl px-4 py-8 sm:px-6 lg:px-8">
+	<a
+		href="/admin"
+		class="group mb-4 inline-flex items-center text-xs font-bold tracking-widest text-gray-500 uppercase transition-colors hover:text-brand-navy"
+	>
+		<svg
+			class="mr-2 h-4 w-4 transform transition-transform group-hover:-translate-x-1"
+			fill="none"
+			viewBox="0 0 24 24"
+			stroke="currentColor"
+			stroke-width="2"
+		>
+			<path stroke-linecap="round" stroke-linejoin="round" d="M15 19l-7-7 7-7" />
+		</svg>
+		{m.btn_back_to_overview()}
+	</a>
+
+	<h1 class="mb-6 font-serif text-3xl font-bold text-brand-navy">
+		{m.admin_user_edit_heading({ username: data.editUser.username })}
+	</h1>
+
+	{#if form?.success}
+		<div class="mb-5 rounded border border-green-200 bg-green-50 p-3 text-sm text-green-700">
+			{m.admin_user_updated()}
+		</div>
+	{/if}
+	{#if form?.error}
+		<div class="mb-5 rounded border border-red-200 bg-red-50 p-3 text-sm text-red-700">
+			{form.error}
+		</div>
+	{/if}
+
+	<form method="POST" use:enhance class="space-y-6">
+		<!-- Profile card -->
+		<div class="rounded-sm border border-brand-sand bg-white p-6 shadow-sm">
+			<h2 class="mb-5 text-xs font-bold tracking-widest text-gray-400 uppercase">
+				{m.profile_section_personal()}
+			</h2>
+
+			<div class="space-y-4">
+				<div class="grid grid-cols-1 gap-4 sm:grid-cols-2">
+					<label class="block">
+						<span
+							class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+						>
+							{m.profile_label_first_name()}
+						</span>
+						<input
+							type="text"
+							name="firstName"
+							value={data.editUser.firstName ?? ''}
+							class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+						/>
+					</label>
+
+					<label class="block">
+						<span
+							class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+						>
+							{m.profile_label_last_name()}
+						</span>
+						<input
+							type="text"
+							name="lastName"
+							value={data.editUser.lastName ?? ''}
+							class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+						/>
+					</label>
+				</div>
+
+				<label class="block">
+					<span
+						class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+					>
+						{m.profile_label_birth_date()}
+					</span>
+					<input
+						type="text"
+						placeholder="TT.MM.JJJJ"
+						value={birthDateDisplay}
+						oninput={handleBirthDateInput}
+						class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+					/>
+					<input type="hidden" name="birthDate" value={birthDateIso} />
+				</label>
+
+				<label class="block">
+					<span
+						class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+					>
+						{m.profile_label_email()}
+					</span>
+					<input
+						type="email"
+						name="email"
+						value={data.editUser.email ?? ''}
+						class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+					/>
+				</label>
+
+				<label class="block">
+					<span
+						class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+					>
+						{m.profile_label_contact()}
+					</span>
+					<textarea
+						name="contact"
+						rows="3"
+						placeholder={m.profile_contact_placeholder()}
+						class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+						>{data.editUser.contact ?? ''}</textarea
+					>
+				</label>
+			</div>
+		</div>
+
+		<!-- Groups card -->
+		<div class="rounded-sm border border-brand-sand bg-white p-6 shadow-sm">
+			<h2 class="mb-5 text-xs font-bold tracking-widest text-gray-400 uppercase">
+				{m.admin_col_groups()}
+			</h2>
+
+			<div class="flex flex-wrap gap-3">
+				{#each data.groups as group (group.id)}
+					<label class="inline-flex items-center gap-2 text-sm text-gray-700">
+						<input
+							type="checkbox"
+							name="groupIds"
+							value={group.id}
+							checked={data.editUser.groups?.some((g: { id: string }) => g.id === group.id)}
+							class="rounded border-gray-300 text-brand-navy focus:ring-brand-mint"
+						/>
+						{group.name}
+					</label>
+				{/each}
+			</div>
+		</div>
+
+		<!-- Password card -->
+		<div class="rounded-sm border border-brand-sand bg-white p-6 shadow-sm">
+			<h2 class="mb-5 text-xs font-bold tracking-widest text-gray-400 uppercase">
+				{m.admin_label_new_password_optional()}
+			</h2>
+
+			<div class="grid grid-cols-1 gap-4 sm:grid-cols-2">
+				<label class="block">
+					<span
+						class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+					>
+						{m.profile_label_new_password()}
+					</span>
+					<input
+						type="password"
+						name="newPassword"
+						class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+					/>
+				</label>
+
+				<label class="block">
+					<span
+						class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+					>
+						{m.profile_label_new_password_confirm()}
+					</span>
+					<input
+						type="password"
+						name="confirmPassword"
+						class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+					/>
+				</label>
+			</div>
+		</div>
+
+		<!-- Save bar -->
+		<div
+			class="sticky bottom-0 z-10 -mx-4 flex items-center justify-between border-t border-brand-sand bg-white px-6 py-4 shadow-[0_-2px_8px_rgba(0,0,0,0.06)]"
+		>
+			<a
+				href="/admin"
+				class="font-sans text-xs font-bold tracking-widest text-gray-500 uppercase hover:text-brand-navy"
+			>
+				{m.btn_cancel()}
+			</a>
+			<button
+				type="submit"
+				class="rounded-sm bg-brand-navy px-5 py-2 font-sans text-xs font-bold tracking-widest text-white uppercase transition-opacity hover:opacity-80"
+			>
+				{m.btn_save()}
+			</button>
+		</div>
+	</form>
+</div>

frontend/src/routes/admin/users/[id]/page.svelte.spec.ts

@@ -0,0 +1,129 @@
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { cleanup, render } from 'vitest-browser-svelte';
+import { page } from 'vitest/browser';
+import Page from './+page.svelte';
+
+vi.mock('$app/forms', () => ({ enhance: () => () => {} }));
+
+const groups = [
+	{ id: 'g1', name: 'Editoren', permissions: ['WRITE_ALL'] },
+	{ id: 'g2', name: 'Admins', permissions: ['ADMIN'] }
+];
+
+const makeUser = (overrides = {}) => ({
+	id: 'u1',
+	username: 'max',
+	firstName: 'Max',
+	lastName: 'Mustermann',
+	email: 'max@example.com',
+	birthDate: '1985-03-22',
+	contact: 'Tel: 0123',
+	enabled: true,
+	groups: [{ id: 'g1', name: 'Editoren', permissions: ['WRITE_ALL'] }],
+	createdAt: '2024-01-01T00:00:00Z',
+	...overrides
+});
+
+const baseData = { user: undefined, canWrite: true, editUser: makeUser(), groups };
+
+afterEach(cleanup);
+
+// ─── Rendering ────────────────────────────────────────────────────────────────
+
+describe('Admin edit user page – rendering', () => {
+	it('renders the heading with username', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect.element(page.getByText(/Benutzer bearbeiten: max/i)).toBeInTheDocument();
+	});
+
+	it('pre-fills first name from editUser data', async () => {
+		render(Page, { data: baseData, form: null });
+		const input = document.querySelector<HTMLInputElement>('input[name="firstName"]');
+		expect(input?.value).toBe('Max');
+	});
+
+	it('pre-fills last name from editUser data', async () => {
+		render(Page, { data: baseData, form: null });
+		const input = document.querySelector<HTMLInputElement>('input[name="lastName"]');
+		expect(input?.value).toBe('Mustermann');
+	});
+
+	it('pre-fills email from editUser data', async () => {
+		render(Page, { data: baseData, form: null });
+		const input = document.querySelector<HTMLInputElement>('input[name="email"]');
+		expect(input?.value).toBe('max@example.com');
+	});
+
+	it('pre-fills birth date in German format (dd.mm.yyyy)', async () => {
+		render(Page, { data: baseData, form: null });
+		const input = document.querySelector<HTMLInputElement>('input[placeholder="TT.MM.JJJJ"]');
+		expect(input?.value).toBe('22.03.1985');
+	});
+
+	it('pre-fills contact field', async () => {
+		render(Page, { data: baseData, form: null });
+		const textarea = document.querySelector<HTMLTextAreaElement>('textarea[name="contact"]');
+		expect(textarea?.value).toBe('Tel: 0123');
+	});
+
+	it('renders group checkboxes', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect.element(page.getByText('Editoren')).toBeInTheDocument();
+		await expect.element(page.getByText('Admins')).toBeInTheDocument();
+	});
+
+	it('pre-selects the groups the user already belongs to', async () => {
+		render(Page, { data: baseData, form: null });
+		const checkbox = document.querySelector<HTMLInputElement>(
+			'input[type="checkbox"][name="groupIds"][value="g1"]'
+		);
+		expect(checkbox?.checked).toBe(true);
+	});
+
+	it('does not pre-select groups the user does not belong to', async () => {
+		render(Page, { data: baseData, form: null });
+		const checkbox = document.querySelector<HTMLInputElement>(
+			'input[type="checkbox"][name="groupIds"][value="g2"]'
+		);
+		expect(checkbox?.checked).toBe(false);
+	});
+
+	it('password fields are empty by default', async () => {
+		render(Page, { data: baseData, form: null });
+		const passwordInputs = document.querySelectorAll<HTMLInputElement>('input[type="password"]');
+		passwordInputs.forEach((input) => {
+			expect(input.value).toBe('');
+		});
+	});
+
+	it('cancel link points to /admin', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect
+			.element(page.getByRole('link', { name: /Abbrechen/i }))
+			.toHaveAttribute('href', '/admin');
+	});
+
+	it('renders the save button', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect.element(page.getByRole('button', { name: /Speichern/i })).toBeInTheDocument();
+	});
+});
+
+// ─── Feedback messages ────────────────────────────────────────────────────────
+
+describe('Admin edit user page – feedback', () => {
+	it('shows success message when form.success is true', async () => {
+		render(Page, { data: baseData, form: { success: true } });
+		await expect.element(page.getByText(/Änderungen gespeichert/i)).toBeInTheDocument();
+	});
+
+	it('shows error message when form.error is set', async () => {
+		render(Page, { data: baseData, form: { error: 'Ungültige Eingabe.' } });
+		await expect.element(page.getByText('Ungültige Eingabe.')).toBeInTheDocument();
+	});
+
+	it('does not show success message when form is null', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect.element(page.getByText(/Änderungen gespeichert/i)).not.toBeInTheDocument();
+	});
+});

frontend/src/routes/admin/users/new/+page.server.ts

@@ -0,0 +1,45 @@
+import { error, fail, redirect } from '@sveltejs/kit';
+import type { PageServerLoad, Actions } from './$types';
+import { createApiClient } from '$lib/api.server';
+import { getErrorMessage } from '$lib/errors';
+
+export const load: PageServerLoad = async ({ fetch, locals }) => {
+	const user = locals.user;
+	const hasAdmin = user?.groups?.some((g: { permissions: string[] }) =>
+		g.permissions.includes('ADMIN')
+	);
+	if (!hasAdmin) throw error(403, getErrorMessage('FORBIDDEN'));
+
+	const api = createApiClient(fetch);
+	const groupsResult = await api.GET('/api/groups');
+
+	return { groups: groupsResult.data ?? [] };
+};
+
+export const actions: Actions = {
+	default: async ({ request, fetch }) => {
+		const data = await request.formData();
+		const api = createApiClient(fetch);
+
+		const birthDateRaw = data.get('birthDate') as string;
+		const result = await api.POST('/api/users', {
+			body: {
+				username: data.get('username') as string,
+				initialPassword: data.get('password') as string,
+				email: (data.get('email') as string) || undefined,
+				groupIds: data.getAll('groupIds') as string[],
+				firstName: (data.get('firstName') as string) || null,
+				lastName: (data.get('lastName') as string) || null,
+				birthDate: birthDateRaw || null,
+				contact: (data.get('contact') as string) || null
+			}
+		});
+
+		if (!result.response.ok) {
+			const code = (result.error as unknown as { code?: string })?.code;
+			return fail(result.response.status, { error: getErrorMessage(code) });
+		}
+
+		throw redirect(303, '/admin');
+	}
+};

frontend/src/routes/admin/users/new/+page.svelte

@@ -0,0 +1,204 @@
+<script lang="ts">
+import { enhance } from '$app/forms';
+import { m } from '$lib/paraglide/messages.js';
+
+let { data, form } = $props();
+
+function germanToIso(german: string): string {
+	const match = german.match(/^(\d{2})\.(\d{2})\.(\d{4})$/);
+	if (!match) return '';
+	return `${match[3]}-${match[2]}-${match[1]}`;
+}
+
+let birthDateIso = $state('');
+
+function handleBirthDateInput(e: Event) {
+	const input = e.target as HTMLInputElement;
+	const digits = input.value.replace(/\D/g, '').slice(0, 8);
+	let formatted: string;
+	if (digits.length <= 2) {
+		formatted = digits;
+	} else if (digits.length <= 4) {
+		formatted = `${digits.slice(0, 2)}.${digits.slice(2)}`;
+	} else {
+		formatted = `${digits.slice(0, 2)}.${digits.slice(2, 4)}.${digits.slice(4)}`;
+	}
+	input.value = formatted;
+	birthDateIso = germanToIso(formatted);
+}
+</script>
+
+<div class="mx-auto max-w-3xl px-4 py-8 sm:px-6 lg:px-8">
+	<a
+		href="/admin"
+		class="group mb-4 inline-flex items-center text-xs font-bold tracking-widest text-gray-500 uppercase transition-colors hover:text-brand-navy"
+	>
+		<svg
+			class="mr-2 h-4 w-4 transform transition-transform group-hover:-translate-x-1"
+			fill="none"
+			viewBox="0 0 24 24"
+			stroke="currentColor"
+			stroke-width="2"
+		>
+			<path stroke-linecap="round" stroke-linejoin="round" d="M15 19l-7-7 7-7" />
+		</svg>
+		{m.btn_back_to_overview()}
+	</a>
+
+	<h1 class="mb-6 font-serif text-3xl font-bold text-brand-navy">{m.admin_user_new_heading()}</h1>
+
+	{#if form?.error}
+		<div class="mb-5 rounded border border-red-200 bg-red-50 p-3 text-sm text-red-700">
+			{form.error}
+		</div>
+	{/if}
+
+	<div class="rounded-sm border border-brand-sand bg-white p-6 shadow-sm">
+		<form method="POST" use:enhance class="space-y-5">
+			<!-- Account -->
+			<h2 class="text-xs font-bold tracking-widest text-gray-400 uppercase">
+				{m.admin_section_users()}
+			</h2>
+
+			<label class="block">
+				<span
+					class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+				>
+					{m.admin_col_login()}
+				</span>
+				<input
+					type="text"
+					name="username"
+					required
+					class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+				/>
+			</label>
+
+			<label class="block">
+				<span
+					class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+				>
+					{m.admin_label_initial_password()}
+				</span>
+				<input
+					type="password"
+					name="password"
+					required
+					class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+				/>
+			</label>
+
+			<!-- Profile -->
+			<h2 class="pt-2 text-xs font-bold tracking-widest text-gray-400 uppercase">
+				{m.profile_section_personal()}
+			</h2>
+
+			<div class="grid grid-cols-1 gap-4 sm:grid-cols-2">
+				<label class="block">
+					<span
+						class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+					>
+						{m.profile_label_first_name()}
+					</span>
+					<input
+						type="text"
+						name="firstName"
+						class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+					/>
+				</label>
+
+				<label class="block">
+					<span
+						class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+					>
+						{m.profile_label_last_name()}
+					</span>
+					<input
+						type="text"
+						name="lastName"
+						class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+					/>
+				</label>
+			</div>
+
+			<label class="block">
+				<span
+					class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+				>
+					{m.profile_label_birth_date()}
+				</span>
+				<input
+					type="text"
+					placeholder="TT.MM.JJJJ"
+					oninput={handleBirthDateInput}
+					class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+				/>
+				<input type="hidden" name="birthDate" value={birthDateIso} />
+			</label>
+
+			<label class="block">
+				<span
+					class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+				>
+					{m.profile_label_email()}
+				</span>
+				<input
+					type="email"
+					name="email"
+					class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+				/>
+			</label>
+
+			<label class="block">
+				<span
+					class="mb-1 block font-sans text-xs font-bold tracking-widest text-gray-400 uppercase"
+				>
+					{m.profile_label_contact()}
+				</span>
+				<textarea
+					name="contact"
+					rows="3"
+					placeholder={m.profile_contact_placeholder()}
+					class="w-full rounded-sm border border-brand-sand px-3 py-2 font-serif text-sm focus:border-brand-navy focus:outline-none"
+				></textarea>
+			</label>
+
+			<!-- Groups -->
+			<h2 class="pt-2 text-xs font-bold tracking-widest text-gray-400 uppercase">
+				{m.admin_col_groups()}
+			</h2>
+
+			<div class="flex flex-wrap gap-3">
+				{#each data.groups as group (group.id)}
+					<label class="inline-flex items-center gap-2 text-sm text-gray-700">
+						<input
+							type="checkbox"
+							name="groupIds"
+							value={group.id}
+							class="rounded border-gray-300 text-brand-navy focus:ring-brand-mint"
+						/>
+						{group.name}
+					</label>
+				{/each}
+			</div>
+
+			<!-- Save bar -->
+			<div
+				class="mt-4 flex items-center justify-between rounded-sm border border-brand-sand bg-white px-6 py-4 shadow-sm"
+			>
+				<a
+					href="/admin"
+					class="font-sans text-xs font-bold tracking-widest text-gray-500 uppercase hover:text-brand-navy"
+				>
+					{m.btn_cancel()}
+				</a>
+				<button
+					type="submit"
+					class="rounded-sm bg-brand-navy px-5 py-2 font-sans text-xs font-bold tracking-widest text-white uppercase transition-opacity hover:opacity-80"
+				>
+					{m.btn_create()}
+				</button>
+			</div>
+		</form>
+	</div>
+</div>

frontend/src/routes/admin/users/new/page.svelte.spec.ts

@@ -0,0 +1,68 @@
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { cleanup, render } from 'vitest-browser-svelte';
+import { page } from 'vitest/browser';
+import Page from './+page.svelte';
+
+vi.mock('$app/forms', () => ({ enhance: () => () => {} }));
+
+const groups = [
+	{ id: 'g1', name: 'Editoren', permissions: ['WRITE_ALL'] },
+	{ id: 'g2', name: 'Admins', permissions: ['ADMIN'] }
+];
+
+const baseData = { user: undefined, canWrite: true, groups };
+
+afterEach(cleanup);
+
+// ─── Rendering ────────────────────────────────────────────────────────────────
+
+describe('Admin new user page – rendering', () => {
+	it('renders the page heading', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect.element(page.getByText(/Neuen Benutzer anlegen/i)).toBeInTheDocument();
+	});
+
+	it('renders the login input', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect.element(page.getByRole('textbox', { name: /Login/i })).toBeInTheDocument();
+	});
+
+	it('renders group checkboxes for each available group', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect.element(page.getByText('Editoren')).toBeInTheDocument();
+		await expect.element(page.getByText('Admins')).toBeInTheDocument();
+	});
+
+	it('cancel link points to /admin', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect
+			.element(page.getByRole('link', { name: /Abbrechen/i }))
+			.toHaveAttribute('href', '/admin');
+	});
+
+	it('back link points to /admin', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect
+			.element(page.getByRole('link', { name: /Zurück/i }))
+			.toHaveAttribute('href', '/admin');
+	});
+
+	it('renders the create button', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect.element(page.getByRole('button', { name: /Erstellen/i })).toBeInTheDocument();
+	});
+});
+
+// ─── Error display ────────────────────────────────────────────────────────────
+
+describe('Admin new user page – error display', () => {
+	it('shows the error message when form has an error', async () => {
+		render(Page, { data: baseData, form: { error: 'Ein Fehler ist aufgetreten.' } });
+		await expect.element(page.getByText('Ein Fehler ist aufgetreten.')).toBeInTheDocument();
+	});
+
+	it('does not show error section when form is null', async () => {
+		render(Page, { data: baseData, form: null });
+		await expect.element(page.getByText('Ein Fehler ist aufgetreten.')).not.toBeInTheDocument();
+	});
+});

frontend/src/routes/documents/[id]/+page.svelte

@@ -1,6 +1,9 @@
 <script lang="ts">
 import { m } from '$lib/paraglide/messages.js';
 import { formatDate } from '$lib/utils/date';
+import { diffWords } from 'diff';
+import ExpandableText from '$lib/components/ExpandableText.svelte';
+import PdfViewer from '$lib/components/PdfViewer.svelte';
 
 let { data } = $props();
 
@@ -38,6 +41,275 @@ async function loadFile(id: string) {
 		isLoading = false;
 	}
 }
+
+// ── History panel ────────────────────────────────────────────────────────────
+
+type VersionSummary = {
+	id: string;
+	savedAt: string;
+	editorName: string;
+	changedFields: string[];
+};
+
+type SnapshotDoc = {
+	title?: string;
+	documentDate?: string;
+	location?: string;
+	documentLocation?: string;
+	transcription?: string;
+	summary?: string;
+	sender?: { id: string; firstName: string; lastName: string } | null;
+	receivers?: { id: string; firstName: string; lastName: string }[];
+	tags?: { id: string; name: string }[];
+};
+
+type DiffEntry =
+	| {
+			kind: 'text';
+			field: string;
+			label: string;
+			parts: { value: string; added?: boolean; removed?: boolean }[];
+	  }
+	| { kind: 'scalar'; field: string; label: string; oldVal: string; newVal: string }
+	| { kind: 'relation'; field: string; label: string; removed: string[]; added: string[] };
+
+let historyOpen = $state(false);
+let historyLoaded = $state(false);
+let historyLoading = $state(false);
+let versions = $state<VersionSummary[]>([]);
+
+let compareMode = $state(false);
+let compareA = $state('');
+let compareB = $state('');
+
+let selectedVersionId = $state<string | null>(null);
+let diffEntries = $state<DiffEntry[]>([]);
+let diffLoading = $state(false);
+let noDiff = $state(false);
+
+const fieldLabels: Record<string, () => string> = {
+	title: m.history_field_title,
+	documentDate: m.history_field_document_date,
+	location: m.history_field_location,
+	documentLocation: m.history_field_document_location,
+	transcription: m.history_field_transcription,
+	summary: m.history_field_summary,
+	sender: m.history_field_sender,
+	receivers: m.history_field_receivers,
+	tags: m.history_field_tags
+};
+
+const TEXT_FIELDS = ['title', 'summary', 'transcription'] as const;
+const SCALAR_FIELDS = ['documentDate', 'location', 'documentLocation'] as const;
+
+function parseSnapshot(raw: string): SnapshotDoc {
+	try {
+		return JSON.parse(raw) as SnapshotDoc;
+	} catch {
+		return {};
+	}
+}
+
+function personLabel(p: { firstName: string; lastName: string }): string {
+	return `${p.firstName} ${p.lastName}`.trim();
+}
+
+const DIFF_CONTEXT_WORDS = 4;
+
+type DiffPart = { value: string; added?: boolean; removed?: boolean };
+
+function trimContextParts(parts: DiffPart[]): DiffPart[] {
+	return parts.flatMap((part, i) => {
+		if (part.added || part.removed) return [part];
+		const tokens = part.value.split(/(\s+)/).filter(Boolean);
+		const wordCount = tokens.filter((t) => /\S/.test(t)).length;
+		if (wordCount <= DIFF_CONTEXT_WORDS * 2) return [part];
+
+		function keepFirst(n: number): string {
+			let count = 0;
+			const out: string[] = [];
+			for (const t of tokens) {
+				out.push(t);
+				if (/\S/.test(t) && ++count >= n) break;
+			}
+			return out.join('');
+		}
+		function keepLast(n: number): string {
+			let count = 0;
+			const out: string[] = [];
+			for (const t of [...tokens].reverse()) {
+				out.unshift(t);
+				if (/\S/.test(t) && ++count >= n) break;
+			}
+			return out.join('');
+		}
+
+		const isFirst = i === 0;
+		const isLast = i === parts.length - 1;
+		if (isFirst) return [{ value: '… ' + keepLast(DIFF_CONTEXT_WORDS) }];
+		if (isLast) return [{ value: keepFirst(DIFF_CONTEXT_WORDS) + ' …' }];
+		return [{ value: keepFirst(DIFF_CONTEXT_WORDS) + ' … ' + keepLast(DIFF_CONTEXT_WORDS) }];
+	});
+}
+
+function buildDiff(older: SnapshotDoc | null, newer: SnapshotDoc): DiffEntry[] {
+	const entries: DiffEntry[] = [];
+
+	for (const field of TEXT_FIELDS) {
+		const a = older?.[field] ?? '';
+		const b = newer[field] ?? '';
+		if (a === b) continue;
+		const parts = trimContextParts(diffWords(a, b));
+		entries.push({ kind: 'text', field, label: fieldLabels[field](), parts });
+	}
+
+	for (const field of SCALAR_FIELDS) {
+		const a = older?.[field] ?? '';
+		const b = newer[field] ?? '';
+		if (a === b) continue;
+		entries.push({ kind: 'scalar', field, label: fieldLabels[field](), oldVal: a, newVal: b });
+	}
+
+	// sender
+	const senderA = older?.sender ? personLabel(older.sender) : '';
+	const senderB = newer.sender ? personLabel(newer.sender) : '';
+	if (senderA !== senderB) {
+		const removed = senderA ? [senderA] : [];
+		const added = senderB ? [senderB] : [];
+		entries.push({
+			kind: 'relation',
+			field: 'sender',
+			label: fieldLabels['sender'](),
+			removed,
+			added
+		});
+	}
+
+	// receivers
+	const receiversA = new Set((older?.receivers ?? []).map(personLabel));
+	const receiversB = new Set((newer.receivers ?? []).map(personLabel));
+	const removedReceivers = [...receiversA].filter((r) => !receiversB.has(r));
+	const addedReceivers = [...receiversB].filter((r) => !receiversA.has(r));
+	if (removedReceivers.length > 0 || addedReceivers.length > 0) {
+		entries.push({
+			kind: 'relation',
+			field: 'receivers',
+			label: fieldLabels['receivers'](),
+			removed: removedReceivers,
+			added: addedReceivers
+		});
+	}
+
+	// tags
+	const tagsA = new Set((older?.tags ?? []).map((t) => t.name));
+	const tagsB = new Set((newer.tags ?? []).map((t) => t.name));
+	const removedTags = [...tagsA].filter((t) => !tagsB.has(t));
+	const addedTags = [...tagsB].filter((t) => !tagsA.has(t));
+	if (removedTags.length > 0 || addedTags.length > 0) {
+		entries.push({
+			kind: 'relation',
+			field: 'tags',
+			label: fieldLabels['tags'](),
+			removed: removedTags,
+			added: addedTags
+		});
+	}
+
+	return entries;
+}
+
+async function fetchSnapshot(versionId: string): Promise<SnapshotDoc> {
+	const res = await fetch(`/api/documents/${doc.id}/versions/${versionId}`);
+	if (!res.ok) throw new Error('Failed to fetch version');
+	const v = await res.json();
+	return parseSnapshot(v.snapshot);
+}
+
+async function toggleHistory() {
+	historyOpen = !historyOpen;
+	if (historyOpen && !historyLoaded) {
+		historyLoading = true;
+		try {
+			const res = await fetch(`/api/documents/${doc.id}/versions`);
+			if (res.ok) {
+				versions = await res.json();
+			}
+			historyLoaded = true;
+		} catch {
+			// ignore
+		} finally {
+			historyLoading = false;
+		}
+	}
+}
+
+async function selectVersion(versionId: string) {
+	if (selectedVersionId === versionId) {
+		selectedVersionId = null;
+		diffEntries = [];
+		noDiff = false;
+		return;
+	}
+	selectedVersionId = versionId;
+	diffEntries = [];
+	noDiff = false;
+	diffLoading = true;
+	try {
+		const idx = versions.findIndex((v) => v.id === versionId);
+		const newerSnap = await fetchSnapshot(versionId);
+		const olderSnap = idx > 0 ? await fetchSnapshot(versions[idx - 1].id) : null;
+		const entries = buildDiff(olderSnap, newerSnap);
+		if (entries.length === 0) {
+			noDiff = true;
+		} else {
+			diffEntries = entries;
+		}
+	} catch {
+		// ignore
+	} finally {
+		diffLoading = false;
+	}
+}
+
+async function applyCompare() {
+	if (!compareA || !compareB || compareA === compareB) return;
+	selectedVersionId = null;
+	diffEntries = [];
+	noDiff = false;
+	diffLoading = true;
+	try {
+		const [snapA, snapB] = await Promise.all([fetchSnapshot(compareA), fetchSnapshot(compareB)]);
+		// compareA is the "older" baseline, compareB is "newer"
+		const entries = buildDiff(snapA, snapB);
+		if (entries.length === 0) {
+			noDiff = true;
+		} else {
+			diffEntries = entries;
+		}
+	} catch {
+		// ignore
+	} finally {
+		diffLoading = false;
+	}
+}
+
+function formatDateTime(iso: string): string {
+	try {
+		return new Intl.DateTimeFormat('de-DE', {
+			day: 'numeric',
+			month: 'short',
+			year: 'numeric',
+			hour: '2-digit',
+			minute: '2-digit'
+		}).format(new Date(iso));
+	} catch {
+		return iso;
+	}
+}
+
+function versionLabel(v: VersionSummary, index: number): string {
+	return `Version ${index + 1} — ${v.editorName} — ${formatDateTime(v.savedAt)}`;
+}
 </script>
 
 <div class="flex h-screen flex-col bg-white">
@@ -322,11 +594,7 @@ async function loadFile(id: string) {
 									<span class="mb-2 block font-sans text-xs text-gray-400 uppercase"
 										>{m.doc_label_summary()}</span
 									>
-									<div
-										class="rounded border border-brand-sand bg-brand-sand/30 p-5 font-serif text-sm leading-relaxed whitespace-pre-wrap text-brand-navy"
-									>
-										{doc.summary}
-									</div>
+									<ExpandableText text={doc.summary} />
 								</div>
 							{/if}
 
@@ -335,17 +603,224 @@ async function loadFile(id: string) {
 									<span class="mb-2 block font-sans text-xs text-gray-400 uppercase"
 										>{m.form_label_transcription()}</span
 									>
-									<div
-										class="rounded border border-brand-sand bg-brand-sand/30 p-5 font-serif text-sm leading-relaxed whitespace-pre-wrap text-brand-navy"
-									>
-										{doc.transcription}
-									</div>
+									<ExpandableText text={doc.transcription} />
 								</div>
 							{/if}
 						</div>
 					</div>
 				{/if}
 
+				<!-- 4. HISTORY GROUP -->
+				<div>
+					<div class="flex items-center justify-between border-b border-brand-sand pb-2">
+						<h3 class="font-sans text-xs font-bold tracking-widest text-brand-navy uppercase">
+							{m.history_section_title()}
+						</h3>
+						<button
+							onclick={toggleHistory}
+							class="flex items-center gap-1 rounded p-1 text-gray-400 transition hover:bg-brand-sand/50 hover:text-brand-navy"
+							aria-expanded={historyOpen}
+							aria-label={m.history_section_title()}
+						>
+							<svg
+								class="h-4 w-4 transition-transform duration-200 {historyOpen ? 'rotate-180' : ''}"
+								viewBox="0 0 20 20"
+								fill="currentColor"
+								aria-hidden="true"
+							>
+								<path
+									fill-rule="evenodd"
+									d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z"
+									clip-rule="evenodd"
+								/>
+							</svg>
+						</button>
+					</div>
+
+					{#if historyOpen}
+						<div class="mt-4 space-y-3">
+							{#if historyLoading}
+								<p class="font-sans text-xs text-gray-400">{m.history_loading()}</p>
+							{:else if versions.length === 0}
+								<p class="font-serif text-sm text-gray-400 italic">{m.history_empty()}</p>
+							{:else}
+								<!-- Compare mode toggle -->
+								<div class="flex justify-end">
+									<button
+										onclick={() => {
+											compareMode = !compareMode;
+											diffEntries = [];
+											noDiff = false;
+											selectedVersionId = null;
+										}}
+										class="font-sans text-xs font-medium transition {compareMode
+											? 'text-brand-navy underline'
+											: 'text-gray-400 hover:text-brand-navy'}"
+									>
+										{m.history_compare_mode()}
+									</button>
+								</div>
+
+								{#if compareMode}
+									<!-- Compare selects -->
+									<div class="space-y-2">
+										<div>
+											<label
+												for="compare-a"
+												class="mb-1 block font-sans text-[10px] text-gray-400 uppercase"
+												>{m.history_compare_select_a()}</label
+											>
+											<select
+												id="compare-a"
+												bind:value={compareA}
+												class="w-full rounded border border-brand-sand bg-white px-2 py-1 font-sans text-xs text-brand-navy focus:ring-1 focus:ring-brand-mint focus:outline-none"
+											>
+												<option value="">—</option>
+												{#each versions as v, i (v.id)}
+													<option value={v.id}>{versionLabel(v, i)}</option>
+												{/each}
+											</select>
+										</div>
+										<div>
+											<label
+												for="compare-b"
+												class="mb-1 block font-sans text-[10px] text-gray-400 uppercase"
+												>{m.history_compare_select_b()}</label
+											>
+											<select
+												id="compare-b"
+												bind:value={compareB}
+												class="w-full rounded border border-brand-sand bg-white px-2 py-1 font-sans text-xs text-brand-navy focus:ring-1 focus:ring-brand-mint focus:outline-none"
+											>
+												<option value="">—</option>
+												{#each versions as v, i (v.id)}
+													<option value={v.id}>{versionLabel(v, i)}</option>
+												{/each}
+											</select>
+										</div>
+										<button
+											onclick={applyCompare}
+											disabled={!compareA || !compareB || compareA === compareB}
+											class="w-full rounded bg-brand-navy px-3 py-1.5 font-sans text-xs font-medium text-white transition hover:bg-brand-navy/80 disabled:cursor-not-allowed disabled:opacity-40"
+										>
+											{m.history_compare_apply()}
+										</button>
+									</div>
+								{:else}
+									<!-- Version list -->
+									<ul class="divide-y divide-brand-sand">
+										{#each versions as v, i (v.id)}
+											<li>
+												<button
+													onclick={() => selectVersion(v.id)}
+													data-testid="history-version"
+													class="w-full py-2 text-left transition hover:bg-brand-sand/30 {selectedVersionId ===
+													v.id
+														? 'border-l-2 border-brand-mint pl-2'
+														: 'pl-0'}"
+												>
+													<div class="flex items-baseline justify-between gap-2">
+														<span class="font-sans text-xs font-medium text-brand-navy">
+															Version {i + 1}
+														</span>
+														<span class="font-sans text-[10px] text-gray-400">
+															{formatDateTime(v.savedAt)}
+														</span>
+													</div>
+													<span class="font-sans text-[11px] text-gray-500">{v.editorName}</span>
+													{#if v.changedFields && v.changedFields.length > 0}
+														<div class="mt-1 flex flex-wrap gap-1">
+															{#each v.changedFields as field (field)}
+																<span
+																	class="rounded bg-brand-sand/50 px-1.5 py-0.5 font-sans text-[10px] tracking-wide text-gray-500 uppercase"
+																>
+																	{fieldLabels[field] ? fieldLabels[field]() : field}
+																</span>
+															{/each}
+														</div>
+													{/if}
+												</button>
+											</li>
+										{/each}
+									</ul>
+								{/if}
+
+								<!-- Diff panel -->
+								{#if diffLoading}
+									<p class="font-sans text-xs text-gray-400">{m.history_loading()}</p>
+								{:else if noDiff}
+									<div
+										data-testid="history-diff"
+										class="rounded-sm border border-brand-sand bg-white p-4 font-serif text-sm text-gray-400 italic"
+									>
+										{m.history_diff_no_changes()}
+									</div>
+								{:else if diffEntries.length > 0}
+									<div
+										data-testid="history-diff"
+										class="space-y-4 rounded-sm border border-brand-sand bg-white p-4"
+									>
+										{#each diffEntries as entry (entry.field)}
+											<div>
+												<span
+													class="mb-1.5 block font-sans text-[10px] font-bold tracking-wide text-gray-400 uppercase"
+													>{entry.label}</span
+												>
+												{#if entry.kind === 'text'}
+													<p class="font-serif text-sm leading-relaxed">
+														{#each entry.parts as part, partIdx (partIdx)}
+															{#if part.added}
+																<span class="bg-green-50 text-green-700">{part.value}</span>
+															{:else if part.removed}
+																<span class="bg-red-50 text-red-600 line-through">{part.value}</span
+																>
+															{:else}
+																<span>{part.value}</span>
+															{/if}
+														{/each}
+													</p>
+												{:else if entry.kind === 'scalar'}
+													<div class="flex items-center gap-2 font-serif text-sm">
+														<span class="text-red-600 line-through">{entry.oldVal || '—'}</span>
+														<svg
+															class="h-3 w-3 flex-shrink-0 text-gray-400"
+															viewBox="0 0 20 20"
+															fill="currentColor"
+															aria-hidden="true"
+														>
+															<path
+																fill-rule="evenodd"
+																d="M10.293 3.293a1 1 0 011.414 0l6 6a1 1 0 010 1.414l-6 6a1 1 0 01-1.414-1.414L14.586 11H3a1 1 0 110-2h11.586l-4.293-4.293a1 1 0 010-1.414z"
+																clip-rule="evenodd"
+															/>
+														</svg>
+														<span class="text-green-700">{entry.newVal || '—'}</span>
+													</div>
+												{:else if entry.kind === 'relation'}
+													<div class="flex flex-wrap gap-1.5">
+														{#each entry.removed as item (item)}
+															<span
+																class="rounded bg-red-50 px-1.5 py-0.5 font-sans text-[11px] text-red-600 line-through"
+																>{item}</span
+															>
+														{/each}
+														{#each entry.added as item (item)}
+															<span
+																class="rounded bg-green-50 px-1.5 py-0.5 font-sans text-[11px] text-green-700"
+																>{item}</span
+															>
+														{/each}
+													</div>
+												{/if}
+											</div>
+										{/each}
+									</div>
+								{/if}
+							{/if}
+						</div>
+					{/if}
+				</div>
+
 				<!-- Footer -->
 				<div class="border-t border-brand-sand pt-4 font-sans text-[10px] text-gray-400">
 					<p class="truncate">ID: {doc.id}</p>
@@ -399,12 +874,8 @@ async function loadFile(id: string) {
 					</div>
 					<p class="font-sans text-sm tracking-wide uppercase">{m.doc_no_scan()}</p>
 				</div>
-			{:else if fileUrl && doc.originalFilename.toLowerCase().endsWith('.pdf')}
-				<iframe
-					src={fileUrl}
-					title={m.doc_preview_iframe_title()}
-					class="h-full w-full border-none bg-white"
-				></iframe>
+			{:else if fileUrl && doc.contentType?.startsWith('application/pdf')}
+				<PdfViewer url={fileUrl} />
 			{:else if fileUrl}
 				<div class="flex h-full w-full items-center justify-center overflow-auto p-8">
 					<img

frontend/src/routes/documents/new/+page.server.ts

@@ -1,4 +1,4 @@
-import { error, fail, redirect } from '@sveltejs/kit';
+import { fail, redirect } from '@sveltejs/kit';
 import { env } from '$env/dynamic/private';
 import { createApiClient } from '$lib/api.server';
 import { parseBackendError, getErrorMessage } from '$lib/errors';
@@ -16,7 +16,7 @@ export async function load({
 		locals.user?.groups?.some((g: { permissions: string[] }) =>
 			g.permissions.includes('WRITE_ALL')
 		) ?? false;
-	if (!canWrite) throw error(403, 'Forbidden');
+	if (!canWrite) throw redirect(303, '/');
 
 	const senderId = url.searchParams.get('senderId') || '';
 	const receiverId = url.searchParams.get('receiverId') || '';

frontend/src/routes/forgot-password/+page.server.ts

@@ -0,0 +1,20 @@
+import { fail } from '@sveltejs/kit';
+import type { Actions } from './$types';
+import { createApiClient } from '$lib/api.server';
+
+export const actions = {
+	default: async ({ request, fetch }) => {
+		const formData = await request.formData();
+		const email = formData.get('email') as string;
+
+		if (!email) {
+			return fail(400, { error: 'Email is required' });
+		}
+
+		const api = createApiClient(fetch);
+		await api.POST('/api/auth/forgot-password', { body: { email } });
+
+		// Always return success — never disclose whether the email exists
+		return { success: true };
+	}
+} satisfies Actions;

frontend/src/routes/forgot-password/+page.svelte

@@ -0,0 +1,84 @@
+<script lang="ts">
+import { m } from '$lib/paraglide/messages.js';
+
+let { form }: { form?: { error?: string; success?: boolean } } = $props();
+</script>
+
+<div class="relative flex min-h-screen flex-col bg-white">
+	<!-- Accent strip -->
+	<div class="h-1 bg-brand-purple"></div>
+
+	<div class="flex flex-1 items-center justify-center px-4">
+		<div class="w-full max-w-sm">
+			<!-- Logo -->
+			<div class="mb-10 text-center">
+				<a href="/" class="inline-flex items-center" aria-label="Familienarchiv">
+					<span class="font-sans text-2xl font-bold tracking-widest text-brand-navy uppercase"
+						>Familienarchiv</span
+					>
+				</a>
+			</div>
+
+			<!-- Card -->
+			<div class="rounded-sm border border-brand-sand bg-white p-8 shadow-sm">
+				<h1 class="mb-6 font-sans text-sm font-bold tracking-widest text-brand-navy uppercase">
+					{m.forgot_password_heading()}
+				</h1>
+
+				{#if form?.success}
+					<div class="mb-5 rounded-sm border border-green-200 bg-green-50 px-4 py-3">
+						<p class="font-sans text-xs text-green-700">{m.forgot_password_success()}</p>
+					</div>
+
+					<a
+						href="/login"
+						class="font-sans text-xs text-gray-400 transition-colors hover:text-brand-navy"
+						>{m.forgot_password_back_to_login()}</a
+					>
+				{:else}
+					<form method="POST" class="space-y-5">
+						<div>
+							<label
+								for="email"
+								class="mb-1.5 block font-sans text-xs font-bold tracking-widest text-gray-500 uppercase"
+								>{m.forgot_password_email_label()}</label
+							>
+							<input
+								type="email"
+								name="email"
+								id="email"
+								required
+								autocomplete="email"
+								class="block w-full border border-gray-300 px-3 py-2.5 font-serif text-sm text-brand-navy placeholder-gray-400 focus:border-brand-navy focus:ring-1 focus:ring-brand-navy focus:outline-none"
+							/>
+						</div>
+
+						{#if form?.error}
+							<div class="text-center font-sans text-xs font-medium text-red-600">{form.error}</div>
+						{/if}
+
+						<button
+							type="submit"
+							class="mt-2 w-full bg-brand-navy py-2.5 font-sans text-xs font-bold tracking-widest text-white uppercase transition-colors hover:bg-brand-navy/90"
+						>
+							{m.forgot_password_submit()}
+						</button>
+
+						<div class="mt-4 text-center">
+							<a
+								href="/login"
+								class="font-sans text-xs text-gray-400 transition-colors hover:text-brand-navy"
+								>{m.forgot_password_back_to_login()}</a
+							>
+						</div>
+					</form>
+				{/if}
+			</div>
+		</div>
+	</div>
+
+	<!-- Footer -->
+	<div class="py-4 text-center">
+		<p class="font-sans text-xs tracking-widest text-gray-300 uppercase">Familienarchiv</p>
+	</div>
+</div>

frontend/src/routes/login/+page.svelte

@@ -89,6 +89,14 @@ const activeLocale = $derived(getLocale().toUpperCase());
 					>
 						{m.login_btn_submit()}
 					</button>
+
+					<div class="mt-4 text-center">
+						<a
+							href="/forgot-password"
+							class="font-sans text-xs text-gray-400 transition-colors hover:text-brand-navy"
+							>{m.login_forgot_password()}</a
+						>
+					</div>
 				</form>
 			</div>
 		</div>

frontend/src/routes/reset-password/+page.server.ts

@@ -0,0 +1,34 @@
+import { fail } from '@sveltejs/kit';
+import type { Actions, PageServerLoad } from './$types';
+import { createApiClient } from '$lib/api.server';
+import { parseBackendError } from '$lib/errors';
+
+export const load: PageServerLoad = async ({ url }) => {
+	const token = url.searchParams.get('token');
+	return { token };
+};
+
+export const actions = {
+	default: async ({ request, fetch }) => {
+		const formData = await request.formData();
+		const token = formData.get('token') as string;
+		const newPassword = formData.get('newPassword') as string;
+		const confirmPassword = formData.get('confirmPassword') as string;
+
+		if (newPassword !== confirmPassword) {
+			return fail(400, { error: 'MISMATCH' });
+		}
+
+		const api = createApiClient(fetch);
+		const result = await api.POST('/api/auth/reset-password', {
+			body: { token, newPassword }
+		});
+
+		if (!result.response.ok) {
+			const backendError = await parseBackendError(result.response);
+			return fail(400, { error: backendError?.code ?? 'INTERNAL_ERROR' });
+		}
+
+		return { success: true };
+	}
+} satisfies Actions;

frontend/src/routes/reset-password/+page.svelte

@@ -0,0 +1,113 @@
+<script lang="ts">
+import { m } from '$lib/paraglide/messages.js';
+import { getErrorMessage } from '$lib/errors';
+
+let {
+	data,
+	form
+}: {
+	data: { token: string | null };
+	form?: { error?: string; success?: boolean };
+} = $props();
+</script>
+
+<div class="relative flex min-h-screen flex-col bg-white">
+	<!-- Accent strip -->
+	<div class="h-1 bg-brand-purple"></div>
+
+	<div class="flex flex-1 items-center justify-center px-4">
+		<div class="w-full max-w-sm">
+			<!-- Logo -->
+			<div class="mb-10 text-center">
+				<a href="/" class="inline-flex items-center" aria-label="Familienarchiv">
+					<span class="font-sans text-2xl font-bold tracking-widest text-brand-navy uppercase"
+						>Familienarchiv</span
+					>
+				</a>
+			</div>
+
+			<!-- Card -->
+			<div class="rounded-sm border border-brand-sand bg-white p-8 shadow-sm">
+				<h1 class="mb-6 font-sans text-sm font-bold tracking-widest text-brand-navy uppercase">
+					{m.reset_password_heading()}
+				</h1>
+
+				{#if form?.success}
+					<div class="mb-5 rounded-sm border border-green-200 bg-green-50 px-4 py-3">
+						<p class="font-sans text-xs text-green-700">{m.reset_password_success()}</p>
+					</div>
+
+					<a
+						href="/login"
+						class="font-sans text-xs text-gray-400 transition-colors hover:text-brand-navy"
+						>{m.forgot_password_back_to_login()}</a
+					>
+				{:else}
+					<form method="POST" class="space-y-5">
+						<input type="hidden" name="token" value={data.token ?? ''} />
+
+						<div>
+							<label
+								for="newPassword"
+								class="mb-1.5 block font-sans text-xs font-bold tracking-widest text-gray-500 uppercase"
+								>{m.reset_password_label()}</label
+							>
+							<input
+								type="password"
+								name="newPassword"
+								id="newPassword"
+								required
+								autocomplete="new-password"
+								class="block w-full border border-gray-300 px-3 py-2.5 font-serif text-sm text-brand-navy placeholder-gray-400 focus:border-brand-navy focus:ring-1 focus:ring-brand-navy focus:outline-none"
+							/>
+						</div>
+
+						<div>
+							<label
+								for="confirmPassword"
+								class="mb-1.5 block font-sans text-xs font-bold tracking-widest text-gray-500 uppercase"
+								>{m.reset_password_confirm_label()}</label
+							>
+							<input
+								type="password"
+								name="confirmPassword"
+								id="confirmPassword"
+								required
+								autocomplete="new-password"
+								class="block w-full border border-gray-300 px-3 py-2.5 font-serif text-sm text-brand-navy placeholder-gray-400 focus:border-brand-navy focus:ring-1 focus:ring-brand-navy focus:outline-none"
+							/>
+						</div>
+
+						{#if form?.error}
+							<div class="text-center font-sans text-xs font-medium text-red-600">
+								{form.error === 'MISMATCH'
+									? m.reset_password_mismatch()
+									: getErrorMessage(form.error)}
+							</div>
+						{/if}
+
+						<button
+							type="submit"
+							class="mt-2 w-full bg-brand-navy py-2.5 font-sans text-xs font-bold tracking-widest text-white uppercase transition-colors hover:bg-brand-navy/90"
+						>
+							{m.reset_password_submit()}
+						</button>
+
+						<div class="mt-4 text-center">
+							<a
+								href="/login"
+								class="font-sans text-xs text-gray-400 transition-colors hover:text-brand-navy"
+								>{m.forgot_password_back_to_login()}</a
+							>
+						</div>
+					</form>
+				{/if}
+			</div>
+		</div>
+	</div>
+
+	<!-- Footer -->
+	<div class="py-4 text-center">
+		<p class="font-sans text-xs tracking-widest text-gray-300 uppercase">Familienarchiv</p>
+	</div>
+</div>

frontend/vite.config.ts

@@ -6,6 +6,9 @@ import { playwright } from '@vitest/browser-playwright';
 import { sveltekit } from '@sveltejs/kit/vite';
 
 export default defineConfig({
+	optimizeDeps: {
+		include: ['pdfjs-dist']
+	},
 	server: {
 		host: '0.0.0.0', // Erlaubt Zugriff von außen
 		port: 5173, // Standard SvelteKit Port
@@ -13,7 +16,19 @@ export default defineConfig({
 		proxy: {
 			'/api': {
 				target: process.env.API_PROXY_TARGET || 'http://localhost:8080',
-				changeOrigin: true
+				changeOrigin: true,
+				// Inject Authorization header from the auth_token cookie so that
+				// browser-side fetch('/api/...') calls work the same as SSR fetches
+				// (which go through handleFetch in hooks.server.ts).
+				configure: (proxy) => {
+					proxy.on('proxyReq', (proxyReq, req) => {
+						const cookies = req.headers.cookie ?? '';
+						const match = cookies.match(/auth_token=([^;]+)/);
+						if (match) {
+							proxyReq.setHeader('Authorization', decodeURIComponent(match[1]));
+						}
+					});
+				}
 			}
 		}
 	},

frontend/yarn.lock

@@ -207,6 +207,28 @@
   resolved "https://registry.npmjs.org/@lix-js/server-protocol-schema/-/server-protocol-schema-0.1.1.tgz"
   integrity sha512-jBeALB6prAbtr5q4vTuxnRZZv1M2rKe8iNqRQhFJ4Tv7150unEa0vKyz0hs8Gl3fUGsWaNJBh3J8++fpbrpRBQ==
 
+"@napi-rs/canvas-linux-x64-gnu@0.1.97":
+  version "0.1.97"
+  resolved "https://registry.npmjs.org/@napi-rs/canvas-linux-x64-gnu/-/canvas-linux-x64-gnu-0.1.97.tgz"
+  integrity sha512-iDUBe7AilfuBSRbSa8/IGX38Mf+iCSBqoVKLSQ5XaY2JLOaqz1TVyPFEyIck7wT6mRQhQt5sN6ogfjIDfi74tg==
+
+"@napi-rs/canvas@^0.1.95":
+  version "0.1.97"
+  resolved "https://registry.npmjs.org/@napi-rs/canvas/-/canvas-0.1.97.tgz"
+  integrity sha512-8cFniXvrIEnVwuNSRCW9wirRZbHvrD3JVujdS2P5n5xiJZNZMOZcfOvJ1pb66c7jXMKHHglJEDVJGbm8XWFcXQ==
+  optionalDependencies:
+    "@napi-rs/canvas-android-arm64" "0.1.97"
+    "@napi-rs/canvas-darwin-arm64" "0.1.97"
+    "@napi-rs/canvas-darwin-x64" "0.1.97"
+    "@napi-rs/canvas-linux-arm-gnueabihf" "0.1.97"
+    "@napi-rs/canvas-linux-arm64-gnu" "0.1.97"
+    "@napi-rs/canvas-linux-arm64-musl" "0.1.97"
+    "@napi-rs/canvas-linux-riscv64-gnu" "0.1.97"
+    "@napi-rs/canvas-linux-x64-gnu" "0.1.97"
+    "@napi-rs/canvas-linux-x64-musl" "0.1.97"
+    "@napi-rs/canvas-win32-arm64-msvc" "0.1.97"
+    "@napi-rs/canvas-win32-x64-msvc" "0.1.97"
+
 "@playwright/test@^1.58.2":
   version "1.58.2"
   resolved "https://registry.npmjs.org/@playwright/test/-/test-1.58.2.tgz"
@@ -452,6 +474,11 @@
   resolved "https://registry.npmjs.org/@types/deep-eql/-/deep-eql-4.0.2.tgz"
   integrity sha512-c9h9dVVMigMPc4bwTvC5dxqtqJZwQPePsWjPlpSOnojbor6pGqdk541lfA7AqFQr5pB1BRdq0juY9db81BwyFw==
 
+"@types/diff@^7.0.2":
+  version "7.0.2"
+  resolved "https://registry.npmjs.org/@types/diff/-/diff-7.0.2.tgz"
+  integrity sha512-JSWRMozjFKsGlEjiiKajUjIJVKuKdE3oVy2DNtK+fUo8q82nhFZ2CPQwicAIkXrofahDXrWJ7mjelvZphMS98Q==
+
 "@types/estree@*", "@types/estree@^1.0.0", "@types/estree@^1.0.5", "@types/estree@^1.0.6", "@types/estree@1.0.8":
   version "1.0.8"
   resolved "https://registry.npmjs.org/@types/estree/-/estree-1.0.8.tgz"
@@ -888,6 +915,11 @@ devalue@^5.6.4:
   resolved "https://registry.npmjs.org/devalue/-/devalue-5.6.4.tgz"
   integrity sha512-Gp6rDldRsFh/7XuouDbxMH3Mx8GMCcgzIb1pDTvNyn8pZGQ22u+Wa+lGV9dQCltFQ7uVw0MhRyb8XDskNFOReA==
 
+diff@^8.0.3:
+  version "8.0.3"
+  resolved "https://registry.npmjs.org/diff/-/diff-8.0.3.tgz"
+  integrity sha512-qejHi7bcSD4hQAZE0tNAawRK1ZtafHDmMTMkrrIGgSLl7hTnQHmKCeB45xAcbfTqK2zowkM3j3bHt/4b/ARbYQ==
+
 enhanced-resolve@^5.19.0:
   version "5.20.0"
   resolved "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-5.20.0.tgz"
@@ -1452,6 +1484,11 @@ natural-compare@^1.4.0:
   resolved "https://registry.npmjs.org/natural-compare/-/natural-compare-1.4.0.tgz"
   integrity sha512-OWND8ei3VtNC9h7V60qff3SVobHr996CTwgxubgyQYEpg290h9J0buyECNNJexkFm5sOajh5G116RYA1c8ZMSw==
 
+node-readable-to-web-readable-stream@^0.4.2:
+  version "0.4.2"
+  resolved "https://registry.npmjs.org/node-readable-to-web-readable-stream/-/node-readable-to-web-readable-stream-0.4.2.tgz"
+  integrity sha512-/cMZNI34v//jUTrI+UIo4ieHAB5EZRY/+7OmXZgBxaWBMcW2tGdceIw06RFxWxrKZ5Jp3sI2i5TsRo+CBhtVLQ==
+
 obug@^2.1.0, obug@^2.1.1:
   version "2.1.1"
   resolved "https://registry.npmjs.org/obug/-/obug-2.1.1.tgz"
@@ -1543,6 +1580,14 @@ pathe@^2.0.3:
   resolved "https://registry.npmjs.org/pathe/-/pathe-2.0.3.tgz"
   integrity sha512-WUjGcAqP1gQacoQe+OBJsFA7Ld4DyXuUIjZ5cc75cLHvJ7dtNsTugphxIADwspS+AraAUePCKrSVtPLFj/F88w==
 
+pdfjs-dist@^5.5.207:
+  version "5.5.207"
+  resolved "https://registry.npmjs.org/pdfjs-dist/-/pdfjs-dist-5.5.207.tgz"
+  integrity sha512-WMqqw06w1vUt9ZfT0gOFhMf3wHsWhaCrxGrckGs5Cci6ybDW87IvPaOd2pnBwT6BJuP/CzXDZxjFgmSULLdsdw==
+  optionalDependencies:
+    "@napi-rs/canvas" "^0.1.95"
+    node-readable-to-web-readable-stream "^0.4.2"
+
 picocolors@^1.0.0, picocolors@^1.1.1:
   version "1.1.1"
   resolved "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz"

scripts/rebuild-frontend.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+# Rebuilds the frontend Docker container and refreshes the node_modules volume.
+# Run this after adding or updating npm dependencies.
+set -euo pipefail
+
+cd "$(dirname "$0")/.."
+
+echo "Stopping frontend container..."
+docker compose stop frontend
+
+echo "Removing frontend container..."
+docker compose rm -f frontend
+
+echo "Removing stale node_modules volume..."
+docker volume rm familienarchiv_frontend_node_modules 2>/dev/null || true
+
+echo "Rebuilding image and starting container..."
+docker compose up -d --build frontend
+
+echo "Done. Tailing logs (Ctrl+C to exit)..."
+docker compose logs -f frontend