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3 commits

Author SHA1 Message Date
Jens Reinemann
56ac9b1425 feat: Messaging-System mit Offline-First und WebSocket-Push (#58)
## Server
- Messages-Tabelle (id, sender_id, receiver_id, body, sent_at, delivered_at)
- MessageRepository: save/getUndelivered/getConversation/markDelivered (JOIN statt N+1)
- POST /api/messages, GET /api/messages/{userId}: Nachrichten senden/abrufen
- GET /api/users: User-Liste fuer authentifizierte User (ohne eigenen Account)
- WebSocketManager: notifyNewMessage() + isOnline()
- WebSocketRoutes: unzugestellte Nachrichten bei Reconnect pushen
- LoginResponse: userId + username ergaenzt
- Server-Dependency: kotlinx.serialization fuer shared

## App
- MessageEntity + MessageDao (Room, Migration 3->4)
- KrisenvorratDatabase v4, Migrations.MIGRATION_3_4
- MessageRepositoryImpl: Offline-First (isPending), drain bei WebSocket-Connect
- WebSocketEvent.NewMessage -> MessageDto aus shared
- WebSocketClientImpl: new_message-Event parsen
- AUTH_USER_ID in SettingsKeys, SyncServiceImpl speichert userId bei Login
- UserListScreen + UserListViewModel: User-Liste anzeigen
- ChatScreen + ChatViewModel: WhatsApp-Style Chat (links/rechts, Zeitstempel)
- Navigation: Screen.UserList, Screen.Chat, MESSAGES in Bottom-Nav
- RepositoryModule: MessageRepository gebunden

## Tests
- 234 Tests, 0 Fehler
2026-05-16 23:35:25 +02:00
Jens Reinemann
8280a9daf9 refactor: kcal/100g -> kcal/kg umbenennen und Mindestbestand entfernen
- ItemEntity, ItemDto: kcalPer100g -> kcalPerKg (kcal_per_kg),
  minStock-Spalte komplett entfernt
- CalculateSupplyRangeUseCase: Formel angepasst (/ 1000.0 * kcalPerKg)
- GetMinStockWarningsUseCase + MinStockWarning: gelöscht
- UI (ItemFormScreen, WarningsScreen, DashboardScreen): Mindestbestand-
  Felder und Warnungsabschnitte entfernt
- ViewModels, UiState, Repository: alle Referenzen bereinigt
- Server (Tables, InventoryRepository): Schema angepasst
- Room: fallbackToDestructiveMigration() hinzugefügt (keine Produktivdaten)
- Alle 434 Tests gruen
2026-05-16 14:19:10 +02:00
Jens Reinemann
c0c4978ccf feat(shared): add shared module with common DTO models
New Gradle module :shared (pure Kotlin/JVM) containing @Serializable
DTO classes for use by both the Android app and future Ktor server.

shared/src/main/kotlin/de/krisenvorrat/shared/model/:
- InventoryDto: root DTO replacing ExportData (version, categories,
  locations, items, settings)
- CategoryDto, LocationDto, ItemDto, SettingDto: extracted from
  the former *Export data classes in :app

Migration in :app:
- ExportData.kt deleted (classes moved to :shared)
- ImportExportRepositoryImpl now imports from de.krisenvorrat.shared.model
- app/build.gradle.kts adds implementation(project(:shared))

Build config:
- libs.versions.toml: added kotlin-jvm plugin entry
- build.gradle.kts (root): registered kotlin-jvm plugin
- settings.gradle.kts: include(:shared)

JSON wire format is unchanged; all 165 existing tests pass.

Closes #39
2026-05-14 19:50:23 +02:00