docs(legibility): fix four more signature/accuracy blockers in domain READMEs

- notification: remove phantom NotificationPreferenceRepository entity; fix
  notifyReply signature (DocumentComment + Set<UUID>, not parentComment/reply)
- tag: correct delete(UUID) description — TagService.delete() is called BY
  DocumentService.deleteTagCascading(), not the other way around
- person: fix findOrCreateByAlias to single-String signature; type classification
  is internal to PersonTypeClassifier
- dashboard: replace fabricated cross-domain calls with verified ones
  (removed NotificationService + GeschichteService; added TranscriptionService,
  UserService, CommentService per actual DashboardService imports)

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

backend/src/main/java/org/raddatz/familienarchiv/dashboard/README.md

@@ -26,11 +26,13 @@ None of the underlying data — it reads from `document/`, `person/`, `audit/`,
 
 ## Cross-domain dependencies
 
-- `DocumentService.count()` / `findWeeklyStats()` / `findReadyToReadQueue()` / `findSegmentationQueue()` — document metrics
-- `PersonService.count()` / `findAll()` / `findAllFamilyMembers()` — person metrics
-- `AuditLogQueryService.findRecentActivity()` — activity feed events
-- `NotificationService.getNotifications()` — per-user notifications for the activity feed
-- `GeschichteService.list()` / `count()` — story metrics
+- `DocumentService.count()` — total document count (StatsService)
+- `DocumentService.getDocumentById(UUID)` / `getDocumentsByIds(List<UUID>)` — document enrichment for activity feed (DashboardService)
+- `PersonService.count()` — total person count (StatsService)
+- `TranscriptionService.listBlocks(UUID)` — transcription block lookup for resume widget (DashboardService)
+- `UserService.getById(UUID)` — actor name resolution in activity feed (DashboardService)
+- `CommentService.findAnnotationIdsByIds(...)` — annotation context lookup for activity feed (DashboardService)
+- `AuditLogQueryService.findMostRecentDocumentForUser()` / `getPulseStats()` / `findActivityFeed()` — audit-sourced feed rows (DashboardService)
 
 ## Frontend counterpart
 

backend/src/main/java/org/raddatz/familienarchiv/notification/README.md

@@ -4,8 +4,8 @@ In-app messages delivered in real time via SSE and persisted in the bell-icon dr
 
 ## What this domain owns
 
-Entity: `Notification`, `NotificationPreference`.
-Features: create and deliver notifications, unread count, mark-read, SSE real-time push, per-user delivery preferences.
+Entity: `Notification`.
+Features: create and deliver notifications, unread count, mark-read, SSE real-time push, per-user delivery preferences (stored as fields on `AppUser`, managed by `user/`).
 
 ## What this domain does NOT own
 
@@ -17,7 +17,7 @@ Features: create and deliver notifications, unread count, mark-read, SSE real-ti
 | Method | Consumer | Purpose |
 |---|---|---|
 | `notifyMentions(mentionedUserIds, comment)` | document (comment) | Push mention notifications when a comment contains @mentions |
-| `notifyReply(parentComment, reply)` | document (comment) | Push reply notification to the thread author |
+| `notifyReply(reply, participantIds)` | document (comment) | Push reply notification to all thread participants |
 | `countUnread(userId)` | user session | Unread badge count in the nav bar |
 | `getNotifications(userId)` | dashboard / activity | Notification list for bell dropdown |
 | `markRead(id)` / `markAllRead(userId)` | notification controller | User-driven read-state updates |
@@ -29,7 +29,7 @@ Features: create and deliver notifications, unread count, mark-read, SSE real-ti
 - `NotificationService` — create, query, mark-read
 - `SseEmitterRegistry` — runtime-stateful component that keeps one `SseEmitter` per connected user. On `notifyMentions()` / `notifyReply()`, the service writes to `SseEmitterRegistry` to push real-time events. SSE connections go **backend → browser directly**, not via the SvelteKit SSR layer.
 - `NotificationRepository` — persisted notification rows
-- `NotificationPreferenceRepository` — per-user preference rows
+- `NotificationPreferenceDTO` — read/write DTO for preference endpoints (prefs stored on `AppUser`)
 
 ## Cross-domain dependencies
 

backend/src/main/java/org/raddatz/familienarchiv/person/README.md

@@ -21,7 +21,7 @@ Features: person CRUD, name alias management, person merge (deduplication), fami
 | `getAllById(List<UUID>)` | document | Bulk fetch for sender/receiver resolution |
 | `findAll()` | document, dashboard | List all persons |
 | `findByName(String)` | document | Typeahead search |
-| `findOrCreateByAlias(String, PersonType)` | importing | Idempotent create during mass import |
+| `findOrCreateByAlias(String rawName)` | importing | Idempotent create during mass import; type classification happens internally |
 | `findAllFamilyMembers()` | dashboard | Family member list for stats |
 | `findCorrespondents()` | document | Correspondent list for conversation filter |
 | `count()` | dashboard | Total person count for stats |

backend/src/main/java/org/raddatz/familienarchiv/tag/README.md

@@ -16,7 +16,7 @@ Features: tag CRUD, hierarchical deletion (cascade to descendants), tag typeahea
 
 | Method | Consumer | Purpose |
 |---|---|---|
-| `delete(UUID)` | document | Remove a tag; triggers `DocumentService.deleteTagCascading()` first |
+| `delete(UUID)` | document | Remove the tag record; called by `DocumentService.deleteTagCascading()` after all document references are unlinked |
 | `deleteWithDescendants(UUID)` | admin tag UI | Recursive subtree deletion |
 | `expandTagNamesToDescendantIdSets(List<String>)` | document | Expand tag filter to include descendant tags |