chore: entferne ungenutzte Importe, reduziere Redundanz in DesktopMainLayout und verlagere Komponenten in Module

Signed-off-by: StefanMoCoAt <stefan.mo.co@gmail.com>
chore: füge SyncManager und Peer-Zähler hinzu, verbessere Navigation-Breadcrumbs und passe MD3-Stil an
2026-04-20 15:59:36 +02:00 · 2026-04-20 15:09:25 +02:00 · 2026-04-20 14:39:48 +02:00 · 2026-04-20 14:23:47 +02:00 · 2026-04-20 14:21:53 +02:00
10 changed files with 1229 additions and 1002 deletions
--- a/docs/04_Agents/Journal/2026-04-20_Session-Log_Onboarding.md
+++ b/docs/04_Agents/Journal/2026-04-20_Session-Log_Onboarding.md
@ -0,0 +1,41 @@
+---
+type: Journal
+status: FINAL
+owner: Curator
+date: 2026-04-20
+---
+
+# Session Log – Finalisierung Start-Sequenz & Layout (Phase 13)
+
+## 🏗️ Status-Update
+Die Nachmittags-Session am 20. April 2026 wurde erfolgreich abgeschlossen. Die gesamte Start-Sequenz, die Infrastruktur-Integration und das globale Layout wurden nach dem **ADR-0024 Plug-and-Play Pattern** finalisiert.
+
+## 🛠️ Umfang & Änderungen
+
+### 1. Onboarding & Geräte-Initialisierung
+- **Sidebar-Blocking:** Fachliche Module sind deaktiviert, bis das Gerät initialisiert ist.
+- **Client-Datensicherheit:** Der `backupPath` ist für alle Rollen verpflichtend (Lokale Datensouveränität).
+- **Navigations-Fix:** Login-Sackgasse behoben (`navigateBack` implementiert).
+- **Setup-Workflow:** Nahtloser Übergang zur Veranstaltungs-Verwaltung nach Abschluss ohne Neustart.
+
+### 2. Infrastruktur & Sicherheit
+- **Lifecycle-Awareness:** `ConnectivityTracker` und `DiscoveryService` starten reaktiv erst nach erfolgreicher Initialisierung.
+- **Plug-and-Play:** Dienste bleiben inaktiv, solange kein Gerätename/Key vorliegt (Ressourcenschonung).
+
+### 3. Globale Navigation & Layout (Vision_03)
+- **Top-Bar:** Integration eines pulsierenden WebSocket-Sync-Indikators (Echtzeit-Peer-Count).
+- **Breadcrumbs:** Konsistentes MD3-Styling mit Home-Anker und navigierbaren Pfaden für alle Bounded Contexts.
+- **Navigation-Rail:** Optimierung auf MD3-Standards (Ripple-Effekt, Surface-Indikatoren, Tooltips).
+- **Footer:** Umstellung auf High-Density Layout (28dp Höhe, optimierte Schriftgrößen) für maximale Informationsdichte.
+- **Refactoring:** `DesktopMainLayout.kt` von 1274 Zeilen auf ca. 95 Zeilen reduziert.
+- **Modul-Aufsplittung:** Extraktion der Sub-Komponenten in `NavRail.kt`, `TopHeader.kt`, `ContentArea.kt` und `FooterBar.kt` im Paket `at.mocode.frontend.shell.desktop.screens.layout.components`.
+- **API-Bereinigung:** Beseitigung ungenutzter Properties (z.B. `TopBarTextColor`) und Korrektur veralteter API-Signaturen in den Screen-Injektionen.
+- **Fehlerbehebung:** Beseitigung von Kompilerfehlern in `NavRail.kt` (Tooltip-Positionierung) und Bereinigung ungenutzter Parameter in `ContentArea.kt`.
+
+## 📐 Architektur-Check (ADR-0024)
+- **Self-Contained:** Feature-Module verwalten ihren State; Shell reagiert auf Events.
+- **Reaktivität:** UI reagiert sofort auf Konfigurationsänderungen (`settings.json`).
+- **Offline-First:** Visuelles Feedback über lokale DB, LAN-Peers und Cloud-Sync ist jederzeit präsent.
+
+---
+*Dokumentation erstellt durch den Curator im Rahmen des "Meldestelle"-Protokolls.*
--- a/docs/99_Journal/2026-04-19_Ping_Service_Fixes.md
+++ b/docs/99_Journal/2026-04-19_Ping_Service_Fixes.md
@ -0,0 +1,44 @@
+# Journal: Behebung von 500er Fehlern im Ping-Service & Security-Fixes
+
+**Datum:** 19. April 2026
+**Status:** Abgeschlossen
+**Agent:** 🏗️ [Lead Architect] | 🧐 [QA Specialist] | 🧹 [Curator]
+
+## 🎯 Zielsetzung
+Nach der gestrigen Umstrukturierung traten beim `ping-service` HTTP 500 Fehler bei autorisierten API-Aufrufen auf. Ziel war die Identifikation der Ursachen (Security, Parameter-Mapping, Resilience) und deren Behebung sowie die Aktualisierung der Testsuite.
+
+## 🛠️ Durchgeführte Änderungen
+
+### 1. Security-Mapping & Rollen-Korrektur
+*   Im `PingController` wurden die `@PreAuthorize`-Annotationen korrigiert. Da der `KeycloakRoleConverter` das Präfix `ROLE_` hartkodiert hinzufügt und die Rollen in Großbuchstaben umwandelt, wurden die Prüfungen von `MELD_USER` auf `ROLE_MELD_USER` (bzw. `ROLE_MELD_ADMIN`) angepasst.
+*   Der Import der `AccessDeniedException` im `PingExceptionHandler` wurde auf die korrekte Spring Security Klasse fixiert, um 403-Fehler sauber zu fangen und nicht in 500er zu verwandeln.
+
+### 2. API-Konsistenz & Parameter-Mapping
+*   Der Query-Parameter für `/api/ping/sync` wurde explizit auf `lastSyncTimestamp` gemappt, um mit dem Postman-Aufruf und den Anforderungen des Frontends konsistent zu sein.
+
+### 3. Resilience4j & Coroutines
+*   Die Bibliothek `resilience4j-kotlin` wurde in die `libs.versions.toml` aufgenommen und im `ping-service` eingebunden. Dies stellt sicher, dass der `@CircuitBreaker` korrekt mit Kotlin `suspend` Funktionen zusammenarbeitet und Exceptions nicht unkontrolliert durchschlagen.
+
+### 4. Test-Aktualisierung
+*   `PingControllerTest.kt` wurde angepasst, um den neuen Parameter-Namen `lastSyncTimestamp` zu verwenden.
+*   Alle 5 Tests im `PingControllerTest` verlaufen nun erfolgreich.
+
+## ✅ Verifizierung
+*   `./gradlew :backend:services:ping:ping-service:test`: **ERFOLGREICH** (5/5 Tests passed)
+*   Manueller Check der Parameter-Namen gegen Postman-Anforderungen: **ERFOLGREICH**
+*   Verifizierung des Rollen-Mappings im `KeycloakRoleConverter` gegen Controller-Annotationen: **KONSISTENT**
+
+## 🧹 Fazit
+Die "letzte Meile" der Service-Kommunikation ist nun stabil. Durch das verbesserte Exception-Handling und die korrekte Resilience-Integration liefert der Service nun aussagekräftige HTTP-Statuscodes statt generischer 500er Fehler.
+
+### Nachtrag 20:30
+*   **Networking-Fix:** `GlobalSecurityConfig` angepasst, um `jwk-set-uri` primär aus Spring-Properties oder Environment-Variables zu lesen. Default auf `localhost:8180` für IDE-Betrieb korrigiert, um `UnknownHostException: keycloak` zu vermeiden.
+*   **Exception-Handling:** `PingExceptionHandler` um generischen `Exception`-Handler erweitert, um auch Security-Initialisierungsfehler (wie JWT-Decoder-Probleme) sauber abzufangen und zu loggen.
+
+### Nachtrag 21:25
+*   **Re-Fix Circuit Breaker Fallback:** Nachdem ein fehlerhafter Zwischenversuch (möglicherweise durch einen anderen Agenten) die `suspend`-Markierung wieder eingeführt hatte, wurde diese nun final entfernt. Die Signatur `fallbackPing(simulate: Boolean, ex: Throwable)` ohne `suspend` ist die einzig stabile Variante für Resilience4j in Kombination mit Spring Boot 3 AOP-Proxies und Kotlin Coroutines. Tests bestätigen die strukturelle Korrektheit.
+
+### Nachtrag 21:45
+*   **Stochastic Simulation:** Die Zufallskomponente (`Random.nextDouble() < 0.6`) wurde in der `enhancedPing`-Methode wieder eingeführt. 
+*   **Logik:** Wenn `simulate=true` übergeben wird, tritt der Fehler nun nur noch in ca. 60% der Fälle auf, was ein realistisches "intermittierendes" Fehlerszenario für den Circuit Breaker Test darstellt. In den restlichen 40% wird die Anfrage trotz Simulationsmodus erfolgreich verarbeitet.
+*   **Logging:** Zusätzliches Log-Statement für den "Lucky Pass" Fall hinzugefügt, um die Simulationstransparenz in der Konsole zu wahren.
--- a/frontend/core/network/src/commonMain/kotlin/at/mocode/frontend/core/network/ConnectivityTracker.kt
+++ b/frontend/core/network/src/commonMain/kotlin/at/mocode/frontend/core/network/ConnectivityTracker.kt
@ -21,11 +21,8 @@ class ConnectivityTracker : KoinComponent {

  private val scope = CoroutineScope(Dispatchers.Default + SupervisorJob())

-  init {
-    startTracking()
-  }
-
-  private fun startTracking() {
+  fun startTracking() {
+    if (scope.isActive && _isOnline.value) return // Bereits aktiv (Dummy-Check)
    scope.launch {
      while (isActive) {
        _isOnline.value = checkConnection()
--- a/frontend/features/device-initialization/src/jvmMain/kotlin/at/mocode/frontend/features/device/initialization/presentation/DeviceInitializationConfig.jvm.kt
+++ b/frontend/features/device-initialization/src/jvmMain/kotlin/at/mocode/frontend/features/device/initialization/presentation/DeviceInitializationConfig.jvm.kt
@ -72,33 +72,26 @@ actual fun DeviceInitializationConfig(
        isError = settings.sharedKey.isNotEmpty() && !DeviceInitializationValidator.isKeyValid(settings.sharedKey),
        errorMessage = "Mindestens ${DeviceInitializationValidator.MIN_KEY_LENGTH} Zeichen erforderlich.",
        visualTransformation = if (passwordVisible) VisualTransformation.None else PasswordVisualTransformation(),
-        imeAction = if (settings.networkRole == NetworkRole.MASTER) ImeAction.Next else ImeAction.Done,
+        imeAction = ImeAction.Next,
        keyboardActions = KeyboardActions(
-          onNext = { focusManager.moveFocus(FocusDirection.Next) },
-          onDone = {
-            if (DeviceInitializationValidator.canContinue(settings)) {
-              viewModel.completeInitialization()
-            } else {
-              focusManager.clearFocus()
-            }
-          }
+          onNext = { focusManager.moveFocus(FocusDirection.Next) }
        ),
        modifier = Modifier.focusRequester(sharedKeyFocus),
        trailingIcon = if (passwordVisible) Icons.Outlined.VisibilityOff else Icons.Outlined.Visibility,
        onTrailingIconClick = { passwordVisible = !passwordVisible }
      )

-      if (settings.networkRole == NetworkRole.MASTER) {
-        MsFilePicker(
-          label = "Backup-Verzeichnis (Pfad)",
-          selectedPath = settings.backupPath,
-          onFileSelected = { selectedPath ->
-            viewModel.updateSettings { s -> s.copy(backupPath = selectedPath) }
-          },
-          directoryOnly = true,
-          modifier = Modifier.focusRequester(backupPathFocus)
-        )
+      MsFilePicker(
+        label = "Backup-Verzeichnis (Pfad)",
+        selectedPath = settings.backupPath,
+        onFileSelected = { selectedPath ->
+          viewModel.updateSettings { s -> s.copy(backupPath = selectedPath) }
+        },
+        directoryOnly = true,
+        modifier = Modifier.focusRequester(backupPathFocus)
+      )

+      if (settings.networkRole == NetworkRole.MASTER) {
        Text("Sync-Intervall: ${settings.syncInterval} Min.", style = MaterialTheme.typography.labelMedium)
        Slider(
          value = settings.syncInterval.toFloat(),
@ -106,7 +99,19 @@ actual fun DeviceInitializationConfig(
          valueRange = 1f..60f,
          steps = 59
        )
+      } else {
+        // Button zum Abschließen für Clients, da diese keinen Slider/Clients haben
+        Spacer(Modifier.height(8.dp))
+        Button(
+          onClick = { viewModel.completeInitialization() },
+          modifier = Modifier.fillMaxWidth(),
+          enabled = DeviceInitializationValidator.canContinue(settings)
+        ) {
+          Text("Konfiguration abschließen")
+        }
+      }

+      if (settings.networkRole == NetworkRole.MASTER) {
        HorizontalDivider(Modifier, DividerDefaults.Thickness, DividerDefaults.color)
        Text("👥 Erwartete Clients", style = MaterialTheme.typography.titleSmall)

--- a/frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/frontend/shell/desktop/DesktopApp.kt
+++ b/frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/frontend/shell/desktop/DesktopApp.kt
@ -8,14 +8,14 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Modifier
-import at.mocode.frontend.shell.desktop.navigation.DesktopNavigationPort
-import at.mocode.frontend.shell.desktop.screens.layout.DesktopMainLayout
 import at.mocode.frontend.core.auth.data.local.AuthTokenManager
 import at.mocode.frontend.core.auth.presentation.LoginScreen
 import at.mocode.frontend.core.auth.presentation.LoginViewModel
 import at.mocode.frontend.core.designsystem.theme.AppTheme
 import at.mocode.frontend.core.navigation.AppScreen
 import at.mocode.frontend.features.device.initialization.data.local.DeviceInitializationSettingsManager
+import at.mocode.frontend.shell.desktop.navigation.DesktopNavigationPort
+import at.mocode.frontend.shell.desktop.screens.layout.DesktopMainLayout
 import org.koin.compose.koinInject
 import org.koin.compose.viewmodel.koinViewModel

@ -72,7 +72,7 @@ fun DesktopApp() {
            val returnTo = screen.returnTo ?: AppScreen.VeranstaltungVerwaltung
            nav.navigateToScreen(returnTo)
          },
-          onBack = { /* Desktop hat keine PortalDashboard-Page */ },
+          onBack = { nav.navigateBack() },
        )

        else -> {
@ -85,6 +85,7 @@ fun DesktopApp() {
              authTokenManager.clearToken()
              nav.navigateToScreen(AppScreen.Login(returnTo = AppScreen.VeranstaltungVerwaltung))
            },
+            isAuthenticated = authState.isAuthenticated
          )
        }
      }
--- a/frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/frontend/shell/desktop/screens/layout/DesktopMainLayout.kt
+++ b/frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/frontend/shell/desktop/screens/layout/DesktopMainLayout.kt
--- a/frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/frontend/shell/desktop/screens/layout/components/ContentArea.kt
+++ b/frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/frontend/shell/desktop/screens/layout/components/ContentArea.kt
@ -0,0 +1,363 @@
+package at.mocode.frontend.shell.desktop.screens.layout.components
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.Button
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import at.mocode.frontend.core.auth.data.local.AuthTokenManager
+import at.mocode.frontend.core.navigation.AppScreen
+import at.mocode.frontend.features.billing.presentation.BillingScreen
+import at.mocode.frontend.features.billing.presentation.BillingViewModel
+import at.mocode.frontend.features.device.initialization.data.local.DeviceInitializationSettingsManager
+import at.mocode.frontend.features.device.initialization.domain.model.DeviceInitializationSettings
+import at.mocode.frontend.features.device.initialization.presentation.DeviceInitializationScreen
+import at.mocode.frontend.features.device.initialization.presentation.DeviceInitializationViewModel
+import at.mocode.frontend.features.funktionaer.presentation.FunktionaerIntent
+import at.mocode.frontend.features.funktionaer.presentation.FunktionaerScreen
+import at.mocode.frontend.features.funktionaer.presentation.FunktionaerViewModel
+import at.mocode.frontend.features.nennung.presentation.NennungManagementScreen
+import at.mocode.frontend.features.nennung.presentation.NennungViewModel
+import at.mocode.frontend.features.pferde.presentation.PferdeScreen
+import at.mocode.frontend.features.pferde.presentation.PferdeViewModel
+import at.mocode.frontend.features.ping.presentation.PingScreen
+import at.mocode.frontend.features.ping.presentation.PingViewModel
+import at.mocode.frontend.features.profile.presentation.ProfileScreen
+import at.mocode.frontend.features.profile.presentation.ProfileViewModel
+import at.mocode.frontend.features.reiter.presentation.ReiterScreen
+import at.mocode.frontend.features.reiter.presentation.ReiterViewModel
+import at.mocode.frontend.features.turnier.presentation.TurnierDetailScreen
+import at.mocode.frontend.features.veranstalter.presentation.VeranstaltungKonfigScreen
+import at.mocode.frontend.features.verein.presentation.VereinScreen
+import at.mocode.frontend.features.verein.presentation.VereinViewModel
+import at.mocode.frontend.features.zns.import.presentation.StammdatenImportScreen
+import at.mocode.frontend.shell.desktop.screens.management.VeranstalterAuswahl
+import at.mocode.frontend.shell.desktop.screens.management.VeranstalterDetail
+import at.mocode.frontend.shell.desktop.screens.management.VeranstalterVerwaltungScreen
+import at.mocode.frontend.shell.desktop.screens.nennung.NennungsEingangScreen
+import at.mocode.frontend.shell.desktop.screens.veranstaltung.VeranstaltungVerwaltung
+import at.mocode.frontend.shell.desktop.screens.veranstaltung.details.VeranstaltungProfilScreen
+import at.mocode.frontend.shell.desktop.screens.veranstaltung.wizards.TurnierWizard
+import at.mocode.frontend.shell.desktop.screens.veranstaltung.wizards.VeranstalterAnlegenWizard
+import at.mocode.veranstaltung.feature.presentation.AdminUebersichtScreen
+import at.mocode.veranstaltung.feature.presentation.VeranstaltungDetailScreen
+import at.mocode.veranstaltung.feature.presentation.VeranstaltungNeuScreen
+import org.koin.compose.viewmodel.koinViewModel
+import org.koin.core.parameter.parametersOf
+
+@Composable
+fun DesktopContentArea(
+  currentScreen: AppScreen,
+  onNavigate: (AppScreen) -> Unit,
+  onBack: () -> Unit,
+  onSettingsChange: (DeviceInitializationSettings) -> Unit,
+) {
+  when (currentScreen) {
+    // DeviceInitialization (Geräte-Setup)
+    is AppScreen.DeviceInitialization -> {
+      println("[Screen] Rendering DeviceInitialization")
+      val viewModel = koinViewModel<DeviceInitializationViewModel> {
+        parametersOf({ finalSettings: DeviceInitializationSettings ->
+          DeviceInitializationSettingsManager.saveSettings(finalSettings)
+          // Vision_04: Sicherheitsschlüssel als Token setzen, damit Cloud-Suche funktioniert
+          val authTokenManager = org.koin.core.context.GlobalContext.get().get<AuthTokenManager>()
+          authTokenManager.setToken(finalSettings.sharedKey)
+          onSettingsChange(finalSettings)
+          onNavigate(AppScreen.VeranstaltungVerwaltung)
+        })
+      }
+      DeviceInitializationScreen(viewModel = viewModel)
+    }
+
+    // Haupt-Zentrale: Veranstaltung-Verwaltung
+    is AppScreen.VeranstaltungVerwaltung -> {
+      VeranstaltungVerwaltung(
+        onVeranstaltungOpen = { vId: Long, eId: Long -> onNavigate(AppScreen.VeranstaltungProfil(vId, eId)) },
+        onNewVeranstaltung = {
+          // Wenn wir direkt aus der Übersicht kommen, erst Veranstalter wählen lassen
+          onNavigate(AppScreen.VeranstalterAuswahl)
+        },
+        onNavigateToPferde = { onNavigate(AppScreen.PferdVerwaltung) },
+        onNavigateToReiter = { onNavigate(AppScreen.ReiterVerwaltung) },
+        onNavigateToVereine = { onNavigate(AppScreen.VereinVerwaltung) },
+        onNavigateToFunktionaere = { onNavigate(AppScreen.FunktionaerVerwaltung) },
+        onNavigateToVeranstalter = { onNavigate(AppScreen.VeranstalterVerwaltung) },
+        onNavigateToZnsImport = { onNavigate(AppScreen.StammdatenImport) }
+      )
+    }
+
+    // --- ZNS Importer ---
+    is AppScreen.StammdatenImport -> {
+      StammdatenImportScreen(
+        onBack = onBack
+      )
+    }
+
+    // --- Pferde-Verwaltung & Profil ---
+    is AppScreen.Pferde, is AppScreen.PferdVerwaltung -> {
+      val viewModel = koinViewModel<PferdeViewModel>()
+      PferdeScreen(viewModel = viewModel)
+    }
+
+    is AppScreen.PferdProfil -> {
+      val viewModel = koinViewModel<PferdeViewModel>()
+      // In der aktuellen Ausbaustufe wählen wir das Pferd im ViewModel aus
+      LaunchedEffect(currentScreen.id) {
+        // Mock: Wir suchen das Pferd in den Suchergebnissen
+        viewModel.uiState.searchResults.find { it.id == currentScreen.id.toString() }?.let {
+          viewModel.selectPferd(it)
+        }
+      }
+      PferdeScreen(viewModel = viewModel)
+    }
+
+    // --- Reiter-Verwaltung & Profil ---
+    is AppScreen.Reiter, is AppScreen.ReiterVerwaltung -> {
+      val viewModel = koinViewModel<ReiterViewModel>()
+      ReiterScreen(viewModel = viewModel)
+    }
+
+    is AppScreen.ReiterProfil -> {
+      val viewModel = koinViewModel<ReiterViewModel>()
+      LaunchedEffect(currentScreen.id) {
+        viewModel.uiState.searchResults.find { it.id == currentScreen.id.toString() }?.let {
+          viewModel.selectReiter(it)
+        }
+      }
+      ReiterScreen(viewModel = viewModel)
+    }
+
+    // --- Verein-Verwaltung & Profil ---
+    is AppScreen.Vereine, is AppScreen.VereinVerwaltung -> {
+      println("[Screen] Rendering VereinVerwaltung (VereinScreen)")
+      val vereinViewModel: VereinViewModel = koinViewModel()
+      VereinScreen(viewModel = vereinViewModel)
+    }
+
+    is AppScreen.VereinProfil -> {
+      println("[Screen] Rendering VereinProfil #${currentScreen.id}")
+      val vereinViewModel: VereinViewModel = koinViewModel()
+      // Mock: Selektion im ViewModel (falls unterstützt)
+      VereinScreen(viewModel = vereinViewModel)
+    }
+
+    // --- Funktionaer-Verwaltung & Profil ---
+    is AppScreen.FunktionaerVerwaltung -> {
+      val viewModel = koinViewModel<FunktionaerViewModel>()
+      FunktionaerScreen(viewModel = viewModel)
+    }
+
+    is AppScreen.FunktionaerProfil -> {
+      val viewModel = koinViewModel<FunktionaerViewModel>()
+      LaunchedEffect(currentScreen.id) {
+        viewModel.state.value.list.find { it.id == currentScreen.id }?.let {
+          viewModel.send(FunktionaerIntent.Select(it))
+        }
+      }
+      FunktionaerScreen(viewModel = viewModel)
+    }
+
+    // --- Veranstalter-Verwaltung & Profil ---
+    is AppScreen.VeranstalterVerwaltung -> VeranstalterVerwaltungScreen(
+      onBack = onBack,
+      onNew = { onNavigate(AppScreen.VeranstalterNeu) },
+      onEdit = { onNavigate(AppScreen.VeranstalterProfil(it)) }
+    )
+
+    is AppScreen.VeranstalterProfil -> VeranstalterDetail(
+      veranstalterId = currentScreen.id,
+      onBack = onBack,
+      onZurVeranstaltung = { evtId: Long -> onNavigate(AppScreen.VeranstaltungProfil(currentScreen.id, evtId)) },
+      onNeuVeranstaltung = { onNavigate(AppScreen.VeranstaltungKonfig(currentScreen.id)) },
+    )
+
+    // Neuer Flow: Veranstalter auswählen → Detail → Veranstaltung-Übersicht
+    is AppScreen.VeranstalterAuswahl -> VeranstalterAuswahl(
+      onBack = onBack,
+      onWeiter = { veranstalterId -> onNavigate(AppScreen.VeranstalterDetail(veranstalterId)) },
+      onNeu = { onNavigate(AppScreen.VeranstalterNeu) },
+    )
+
+    is AppScreen.VeranstalterNeu -> VeranstalterAnlegenWizard(
+      onCancel = onBack,
+      onVereinCreated = { newId: Long -> onNavigate(AppScreen.VeranstalterProfil(newId)) }
+    )
+
+    is AppScreen.VeranstalterDetail -> {
+      val vId = currentScreen.veranstalterId
+      VeranstalterDetail(
+        veranstalterId = vId,
+        onBack = onBack,
+        onZurVeranstaltung = { evtId -> onNavigate(AppScreen.VeranstaltungProfil(vId, evtId)) },
+        onNeuVeranstaltung = { onNavigate(AppScreen.VeranstaltungKonfig(vId)) },
+      )
+    }
+
+    is AppScreen.VeranstaltungKonfig -> {
+      val vId = currentScreen.veranstalterId
+      VeranstaltungKonfigScreen(
+        veranstalterId = vId,
+        onAbbrechen = onBack,
+        onSpeichern = { _, _, _ ->
+          // In-Memory Store Simulation
+          // val allEvents = Store.allEvents()
+          // val newId = (allEvents.maxOfOrNull { it.id } ?: 0L) + 1L
+          // ...
+          onNavigate(AppScreen.VeranstaltungProfil(vId, 0L)) // Mock
+        }
+      )
+    }
+
+    is AppScreen.VeranstaltungProfil -> {
+      VeranstaltungProfilScreen(
+        veranstalterId = currentScreen.veranstalterId,
+        veranstaltungId = currentScreen.veranstaltungId,
+        onBack = onBack,
+        onTurnierOpen = { tId ->
+          onNavigate(AppScreen.TurnierDetail(currentScreen.veranstaltungId, tId))
+        },
+        onTurnierNeu = {
+          onNavigate(AppScreen.TurnierNeu(currentScreen.veranstaltungId))
+        },
+        onNavigateToVeranstalterProfil = { verId ->
+          onNavigate(AppScreen.VeranstalterProfil(verId))
+        }
+      )
+    }
+
+    is AppScreen.VeranstaltungDetail -> {
+      VeranstaltungDetailScreen(
+        veranstaltungId = currentScreen.id,
+        onBack = onBack,
+        onTurnierOeffnen = { tId -> onNavigate(AppScreen.TurnierDetail(currentScreen.id, tId)) },
+        onTurnierNeu = { onNavigate(AppScreen.TurnierNeu(currentScreen.id)) }
+      )
+    }
+
+    is AppScreen.VeranstaltungNeu -> {
+      VeranstaltungNeuScreen(
+        onBack = onBack,
+        onSave = { onBack() }
+      )
+    }
+
+    is AppScreen.TurnierDetail -> {
+      val evtId = currentScreen.veranstaltungId
+      val parent = at.mocode.frontend.shell.desktop.data.Store.vereine.firstOrNull { v ->
+        at.mocode.frontend.shell.desktop.data.Store.eventsFor(v.id).any { it.id == evtId }
+      }
+      if (parent == null) {
+        InvalidContextNotice(
+          message = "Veranstaltung (ID=$evtId) nicht gefunden.",
+          onBack = onBack
+        )
+      } else {
+        val veranstaltung =
+          at.mocode.frontend.shell.desktop.data.Store.eventsFor(parent.id).firstOrNull { it.id == evtId }
+        // bewerbViewModel: BewerbViewModel, nennungViewModel: TurnierNennungViewModel, stammdatenViewModel: TurnierStammdatenViewModel
+        val bewerbViewModel: at.mocode.frontend.features.turnier.presentation.BewerbViewModel =
+          org.koin.compose.koinInject { parametersOf(currentScreen.turnierId) }
+        val nennungViewModel: at.mocode.frontend.features.turnier.presentation.TurnierNennungViewModel =
+          org.koin.compose.koinInject { parametersOf(currentScreen.turnierId) }
+        val stammdatenViewModel: at.mocode.frontend.features.turnier.presentation.TurnierStammdatenViewModel =
+          org.koin.compose.koinInject()
+
+        TurnierDetailScreen(
+          veranstaltungId = evtId,
+          turnierId = currentScreen.turnierId,
+          bewerbViewModel = bewerbViewModel,
+          nennungViewModel = nennungViewModel,
+          stammdatenViewModel = stammdatenViewModel,
+          eventVon = veranstaltung?.datumVon,
+          eventBis = veranstaltung?.datumBis,
+          eventOrt = veranstaltung?.ort,
+          veranstalterName = parent.name,
+          veranstalterOrt = parent.ort,
+          veranstalterLogoUrl = veranstaltung?.logoUrl,
+        )
+      }
+    }
+
+    is AppScreen.TurnierNeu -> {
+      val evtId = currentScreen.veranstaltungId
+      val parent = at.mocode.frontend.shell.desktop.data.Store.vereine.firstOrNull { v ->
+        at.mocode.frontend.shell.desktop.data.Store.eventsFor(v.id).any { it.id == evtId }
+      }
+      if (parent == null) {
+        InvalidContextNotice(
+          message = "Veranstaltung (ID=$evtId) nicht gefunden.",
+          onBack = onBack
+        )
+      } else {
+        TurnierWizard(
+          veranstalterId = parent.id,
+          veranstaltungId = evtId,
+          onBack = onBack,
+          onSaved = { _ -> onBack() }
+        )
+      }
+    }
+
+    is AppScreen.Billing -> {
+      val billingViewModel = koinViewModel<BillingViewModel>()
+      BillingScreen(
+        viewModel = billingViewModel,
+        veranstaltungId = currentScreen.veranstaltungId,
+        onBack = onBack
+      )
+    }
+
+    is AppScreen.NennungsEingang -> {
+      NennungsEingangScreen(
+        onBack = onBack
+      )
+    }
+
+    is AppScreen.EntryManagement -> {
+      val viewModel = koinViewModel<NennungViewModel>()
+      NennungManagementScreen(viewModel = viewModel)
+    }
+
+    is AppScreen.ConnectivityCheck -> {
+      val viewModel = koinViewModel<PingViewModel>()
+      PingScreen(viewModel = viewModel)
+    }
+
+    is AppScreen.Profile -> {
+      val viewModel = koinViewModel<ProfileViewModel>()
+      ProfileScreen(viewModel = viewModel)
+    }
+
+    is AppScreen.Home, is AppScreen.Dashboard -> {
+      AdminUebersichtScreen(
+        onVeranstalterAuswahl = { onNavigate(AppScreen.VeranstalterAuswahl) },
+        onVeranstaltungOeffnen = { id -> onNavigate(AppScreen.VeranstaltungDetail(id)) }
+      )
+    }
+
+    else -> {
+      InvalidContextNotice(
+        message = "Dieser Screen (${currentScreen::class.simpleName}) ist noch nicht für Desktop optimiert.",
+        onBack = onBack
+      )
+    }
+  }
+}
+
+@Composable
+private fun InvalidContextNotice(message: String, onBack: () -> Unit) {
+  Column(
+    modifier = Modifier.fillMaxSize().padding(32.dp),
+    verticalArrangement = Arrangement.Center,
+    horizontalAlignment = Alignment.CenterHorizontally,
+  ) {
+    Text(message, color = Color(0xFFB91C1C), fontSize = 14.sp)
+    Spacer(Modifier.height(12.dp))
+    Button(onClick = onBack) { Text("Zur Auswahl") }
+  }
+}
--- a/frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/frontend/shell/desktop/screens/layout/components/FooterBar.kt
+++ b/frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/frontend/shell/desktop/screens/layout/components/FooterBar.kt
@ -0,0 +1,138 @@
+package at.mocode.frontend.shell.desktop.screens.layout.components
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.CloudDone
+import androidx.compose.material.icons.filled.CloudOff
+import androidx.compose.material.icons.filled.Dataset
+import androidx.compose.material.icons.filled.Lan
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import at.mocode.frontend.core.designsystem.theme.AppColors
+import at.mocode.frontend.core.designsystem.theme.Dimens
+import at.mocode.frontend.core.domain.zns.ZnsImportProvider
+import at.mocode.frontend.core.network.ConnectivityTracker
+import at.mocode.frontend.core.network.discovery.NetworkDiscoveryService
+import at.mocode.frontend.features.device.initialization.domain.model.DeviceInitializationSettings
+import kotlinx.coroutines.delay
+import org.koin.compose.koinInject
+import kotlin.time.Duration.Companion.milliseconds
+
+@Composable
+fun DesktopFooterBar(
+  settings: DeviceInitializationSettings,
+  onSetupClick: () -> Unit = {}
+) {
+  val connectivityTracker = koinInject<ConnectivityTracker>()
+  val discoveryService = koinInject<NetworkDiscoveryService>()
+  val znsImporter = koinInject<ZnsImportProvider>()
+
+  val online by connectivityTracker.isOnline.collectAsState()
+  val znsState = znsImporter.state
+  val discoveredServices = remember { mutableStateOf(discoveryService.getDiscoveredServices()) }
+  val deviceName = settings.deviceName.ifBlank { "Unbekannt" }
+
+  // Periodisches Update der LAN-Geräte (mDNS)
+  LaunchedEffect(settings.isConfigured, settings.deviceName) {
+    if (settings.isConfigured && settings.deviceName.isNotBlank()) {
+      discoveryService.startDiscovery()
+      connectivityTracker.startTracking()
+
+      while (true) {
+        discoveredServices.value = discoveryService.getDiscoveredServices()
+        delay(5000.milliseconds)
+      }
+    } else {
+      discoveryService.stopDiscovery()
+      connectivityTracker.stopTracking()
+    }
+  }
+
+  Surface(
+    color = MaterialTheme.colorScheme.surface,
+    contentColor = MaterialTheme.colorScheme.onSurface,
+    tonalElevation = 1.dp,
+    modifier = Modifier.clickable(onClick = onSetupClick)
+  ) {
+    Row(
+      modifier = Modifier
+        .fillMaxWidth()
+        .height(28.dp)
+        .padding(horizontal = Dimens.SpacingS),
+      verticalAlignment = Alignment.CenterVertically,
+      horizontalArrangement = Arrangement.SpaceBetween,
+    ) {
+      Row(
+        verticalAlignment = Alignment.CenterVertically,
+        horizontalArrangement = Arrangement.spacedBy(Dimens.SpacingS)
+      ) {
+        // Status: Cloud Sync
+        StatusIndicator(
+          icon = if (online) Icons.Filled.CloudDone else Icons.Filled.CloudOff,
+          label = if (online) "Cloud OK" else "Lokal",
+          color = if (online) AppColors.Success else MaterialTheme.colorScheme.error
+        )
+
+        VerticalDivider(modifier = Modifier.height(12.dp), color = MaterialTheme.colorScheme.outlineVariant)
+
+        // Status: LAN Devices (mDNS)
+        val deviceCount = discoveredServices.value.size
+        StatusIndicator(
+          icon = Icons.Filled.Lan,
+          label = if (deviceCount > 0) "$deviceName ($deviceCount Peers)" else "$deviceName (Solitär)",
+          color = if (deviceCount > 0) MaterialTheme.colorScheme.primary else MaterialTheme.colorScheme.outline
+        )
+
+        VerticalDivider(modifier = Modifier.height(12.dp), color = MaterialTheme.colorScheme.outlineVariant)
+
+        // Status: ZNS Stammdaten
+        val lastSync = znsState.lastSyncVersion
+        val znsLabel = if (lastSync != null) "ZNS: $lastSync" else "ZNS: Kein Sync"
+        StatusIndicator(
+          icon = Icons.Default.Dataset,
+          label = znsLabel,
+          color = if (lastSync != null) MaterialTheme.colorScheme.secondary else MaterialTheme.colorScheme.error
+        )
+      }
+
+      Row(verticalAlignment = Alignment.CenterVertically) {
+        Text(
+          text = "v2.4.0-rc1 | Desktop-Alpha",
+          style = MaterialTheme.typography.labelSmall.copy(fontSize = 10.sp),
+          color = MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.7f)
+        )
+      }
+    }
+  }
+}
+
+@Composable
+private fun StatusIndicator(
+  icon: ImageVector,
+  label: String,
+  color: Color
+) {
+  Row(
+    verticalAlignment = Alignment.CenterVertically,
+    horizontalArrangement = Arrangement.spacedBy(4.dp)
+  ) {
+    Icon(
+      imageVector = icon,
+      contentDescription = null,
+      tint = color.copy(alpha = 0.8f),
+      modifier = Modifier.size(14.dp)
+    )
+    Text(
+      text = label,
+      style = MaterialTheme.typography.labelSmall.copy(fontSize = 10.sp),
+      color = MaterialTheme.colorScheme.onSurfaceVariant
+    )
+  }
+}
--- a/frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/frontend/shell/desktop/screens/layout/components/NavRail.kt
+++ b/frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/frontend/shell/desktop/screens/layout/components/NavRail.kt
@ -0,0 +1,195 @@
+package at.mocode.frontend.shell.desktop.screens.layout.components
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.layout.*
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.unit.DpOffset
+import androidx.compose.ui.unit.dp
+import at.mocode.frontend.core.designsystem.theme.Dimens
+import at.mocode.frontend.core.navigation.AppScreen
+
+@Composable
+fun DesktopNavRail(
+  currentScreen: AppScreen,
+  onNavigate: (AppScreen) -> Unit,
+  isConfigured: Boolean
+) {
+  Surface(
+    modifier = Modifier.fillMaxHeight().width(Dimens.NavRailWidth),
+    color = MaterialTheme.colorScheme.surfaceVariant.copy(alpha = 0.5f),
+    tonalElevation = 2.dp
+  ) {
+    Column(
+      modifier = Modifier.fillMaxHeight().padding(vertical = Dimens.SpacingM),
+      horizontalAlignment = Alignment.CenterHorizontally,
+      verticalArrangement = Arrangement.spacedBy(Dimens.SpacingS)
+    ) {
+      NavRailItem(
+        icon = Icons.Default.Adjust,
+        label = "Logo",
+        selected = false,
+        onClick = { onNavigate(AppScreen.VeranstaltungVerwaltung) },
+        enabled = true
+      )
+
+      Spacer(Modifier.height(Dimens.SpacingL))
+
+      // Navigations-Items
+      NavRailItem(
+        icon = Icons.Default.Dashboard,
+        label = "Admin",
+        selected = currentScreen is AppScreen.VeranstaltungVerwaltung || currentScreen is AppScreen.VeranstaltungDetail,
+        onClick = { onNavigate(AppScreen.VeranstaltungVerwaltung) },
+        enabled = isConfigured
+      )
+
+      NavRailItem(
+        icon = Icons.Default.CloudDownload,
+        label = "ZNS-Import",
+        selected = currentScreen is AppScreen.StammdatenImport,
+        onClick = { onNavigate(AppScreen.StammdatenImport) },
+        enabled = isConfigured
+      )
+
+      var showStammdatenMenu by remember { mutableStateOf(false) }
+      Box {
+        NavRailItem(
+          icon = Icons.Default.Storage,
+          label = "Stammdaten",
+          selected = currentScreen is AppScreen.Vereine || currentScreen is AppScreen.VereinVerwaltung ||
+            currentScreen is AppScreen.Reiter || currentScreen is AppScreen.ReiterVerwaltung ||
+            currentScreen is AppScreen.Pferde || currentScreen is AppScreen.PferdVerwaltung ||
+            currentScreen is AppScreen.FunktionaerVerwaltung,
+          onClick = { showStammdatenMenu = true },
+          enabled = isConfigured
+        )
+
+        DropdownMenu(
+          expanded = showStammdatenMenu && isConfigured,
+          onDismissRequest = { showStammdatenMenu = false },
+          offset = DpOffset(Dimens.NavRailWidth, 0.dp)
+        ) {
+          DropdownMenuItem(
+            text = { Text("Vereine") },
+            onClick = {
+              showStammdatenMenu = false
+              onNavigate(AppScreen.Vereine)
+            },
+            leadingIcon = { Icon(Icons.Default.People, contentDescription = null) }
+          )
+          DropdownMenuItem(
+            text = { Text("Reiter") },
+            onClick = {
+              showStammdatenMenu = false
+              onNavigate(AppScreen.Reiter)
+            },
+            leadingIcon = { Icon(Icons.Default.Person, contentDescription = null) }
+          )
+          DropdownMenuItem(
+            text = { Text("Pferde") },
+            onClick = {
+              showStammdatenMenu = false
+              onNavigate(AppScreen.Pferde)
+            },
+            leadingIcon = { Icon(Icons.Default.Pets, contentDescription = null) }
+          )
+          DropdownMenuItem(
+            text = { Text("Richter") },
+            onClick = {
+              showStammdatenMenu = false
+              onNavigate(AppScreen.FunktionaerVerwaltung)
+            },
+            leadingIcon = { Icon(Icons.Default.Gavel, contentDescription = null) }
+          )
+        }
+      }
+
+      NavRailItem(
+        icon = Icons.Default.Email,
+        label = "Mails",
+        selected = currentScreen is AppScreen.NennungsEingang,
+        onClick = { onNavigate(AppScreen.NennungsEingang) },
+        enabled = isConfigured
+      )
+
+      Spacer(Modifier.weight(1f))
+
+      NavRailItem(
+        icon = Icons.Default.AppRegistration,
+        label = "Setup",
+        selected = currentScreen is AppScreen.DeviceInitialization,
+        onClick = { onNavigate(AppScreen.DeviceInitialization) },
+        enabled = true
+      )
+
+      NavRailItem(
+        icon = Icons.Default.WifiTethering,
+        label = "Connectivity",
+        selected = currentScreen is AppScreen.ConnectivityCheck,
+        onClick = { onNavigate(AppScreen.ConnectivityCheck) },
+        enabled = true
+      )
+    }
+  }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun NavRailItem(
+  icon: ImageVector,
+  label: String,
+  selected: Boolean,
+  onClick: () -> Unit,
+  enabled: Boolean = true
+) {
+  val interactionSource = remember { MutableInteractionSource() }
+  val contentColor = if (!enabled) {
+    MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.38f)
+  } else if (selected) {
+    MaterialTheme.colorScheme.primary
+  } else {
+    MaterialTheme.colorScheme.onSurfaceVariant
+  }
+
+  TooltipBox(
+    positionProvider = TooltipDefaults.rememberTooltipPositionProvider(
+      positioning = TooltipAnchorPosition.Above,
+      spacingBetweenTooltipAndAnchor = 4.dp
+    ),
+    tooltip = {
+      PlainTooltip(
+        containerColor = MaterialTheme.colorScheme.surfaceContainer,
+        contentColor = MaterialTheme.colorScheme.onSurface
+      ) {
+        Text(label)
+      }
+    },
+    state = rememberTooltipState()
+  ) {
+    Box(
+      modifier = Modifier
+        .size(Dimens.NavRailWidth)
+        .clickable(
+          enabled = enabled,
+          interactionSource = interactionSource,
+          indication = ripple(bounded = false, radius = 24.dp),
+          onClick = onClick
+        ),
+      contentAlignment = Alignment.Center
+    ) {
+      Icon(
+        imageVector = icon,
+        contentDescription = label,
+        tint = contentColor,
+        modifier = Modifier.size(24.dp)
+      )
+    }
+  }
+}
--- a/frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/frontend/shell/desktop/screens/layout/components/TopHeader.kt
+++ b/frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/frontend/shell/desktop/screens/layout/components/TopHeader.kt
@ -0,0 +1,400 @@
+package at.mocode.frontend.shell.desktop.screens.layout.components
+
+import androidx.compose.animation.core.*
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
+import androidx.compose.material.icons.automirrored.filled.Logout
+import androidx.compose.material.icons.filled.ChevronRight
+import androidx.compose.material.icons.filled.Home
+import androidx.compose.material.icons.filled.Person
+import androidx.compose.material3.*
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import at.mocode.frontend.core.designsystem.theme.AppColors
+import at.mocode.frontend.core.designsystem.theme.Dimens
+import at.mocode.frontend.core.navigation.AppScreen
+
+@Composable
+fun DesktopTopHeader(
+  currentScreen: AppScreen,
+  onNavigate: (AppScreen) -> Unit,
+  onBack: () -> Unit,
+  onLogout: () -> Unit,
+  isAuthenticated: Boolean,
+  connectedPeersCount: Int = 0
+) {
+  Surface(
+    modifier = Modifier.fillMaxWidth().height(Dimens.TopBarHeight),
+    color = MaterialTheme.colorScheme.surface,
+    tonalElevation = 1.dp
+  ) {
+    Row(
+      modifier = Modifier.fillMaxSize().padding(horizontal = Dimens.SpacingL),
+      verticalAlignment = Alignment.CenterVertically,
+      horizontalArrangement = Arrangement.SpaceBetween,
+    ) {
+      Row(verticalAlignment = Alignment.CenterVertically) {
+        if (currentScreen !is AppScreen.DeviceInitialization) {
+          IconButton(
+            onClick = onBack,
+            modifier = Modifier.size(Dimens.IconSizeM)
+          ) {
+            Icon(
+              imageVector = Icons.AutoMirrored.Filled.ArrowBack,
+              contentDescription = "Zurück",
+              modifier = Modifier.size(Dimens.IconSizeM),
+              tint = MaterialTheme.colorScheme.onSurfaceVariant
+            )
+          }
+          Spacer(Modifier.width(Dimens.SpacingS))
+        }
+
+        // Home Icon als Anker
+        IconButton(
+          onClick = { onNavigate(AppScreen.VeranstaltungVerwaltung) },
+          modifier = Modifier.size(Dimens.IconSizeM)
+        ) {
+          Icon(
+            imageVector = Icons.Default.Home,
+            contentDescription = "Home",
+            modifier = Modifier.size(Dimens.IconSizeM),
+            tint = MaterialTheme.colorScheme.primary
+          )
+        }
+
+        // Breadcrumb-Segmente
+        BreadcrumbContent(currentScreen, onNavigate)
+      }
+
+      Row(
+        verticalAlignment = Alignment.CenterVertically,
+        horizontalArrangement = Arrangement.spacedBy(Dimens.SpacingM)
+      ) {
+        // Sync-Status Indikator
+        val syncColor = if (connectedPeersCount > 0) AppColors.Success else MaterialTheme.colorScheme.outline
+        val syncText = if (connectedPeersCount > 0) "$connectedPeersCount Peer(s)" else "Offline"
+
+        val infiniteTransition = rememberInfiniteTransition()
+        val pulseAlpha by infiniteTransition.animateFloat(
+          initialValue = 1f,
+          targetValue = 0.4f,
+          animationSpec = infiniteRepeatable(
+            animation = tween(1000, easing = LinearEasing),
+            repeatMode = RepeatMode.Reverse
+          )
+        )
+
+        Row(
+          verticalAlignment = Alignment.CenterVertically,
+          horizontalArrangement = Arrangement.spacedBy(Dimens.SpacingS),
+          modifier = Modifier
+            .background(syncColor.copy(alpha = 0.1f), MaterialTheme.shapes.small)
+            .padding(horizontal = Dimens.SpacingS, vertical = 4.dp)
+        ) {
+          Surface(
+            modifier = Modifier.size(8.dp),
+            shape = MaterialTheme.shapes.extraSmall,
+            color = if (connectedPeersCount > 0) syncColor.copy(alpha = pulseAlpha) else syncColor
+          ) {}
+          Text(
+            text = syncText,
+            style = MaterialTheme.typography.labelSmall,
+            color = syncColor
+          )
+        }
+
+        VerticalDivider(
+          modifier = Modifier.height(16.dp),
+          thickness = 1.dp,
+          color = MaterialTheme.colorScheme.outlineVariant
+        )
+
+        // Profil / Logout Bereich
+        if (isAuthenticated) {
+          Text(
+            text = "Administrator",
+            style = MaterialTheme.typography.labelMedium,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+          )
+          IconButton(onClick = onLogout) {
+            Icon(
+              imageVector = Icons.AutoMirrored.Filled.Logout,
+              contentDescription = "Abmelden",
+              modifier = Modifier.size(Dimens.IconSizeM),
+              tint = MaterialTheme.colorScheme.error
+            )
+          }
+        } else {
+          Text(
+            text = "Gast",
+            style = MaterialTheme.typography.labelMedium,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+          )
+          IconButton(onClick = { onNavigate(AppScreen.Login()) }) {
+            Icon(
+              imageVector = Icons.Default.Person,
+              contentDescription = "Anmelden",
+              modifier = Modifier.size(Dimens.IconSizeM),
+              tint = MaterialTheme.colorScheme.primary
+            )
+          }
+        }
+      }
+    }
+  }
+}
+
+@Composable
+private fun BreadcrumbContent(
+  currentScreen: AppScreen,
+  onNavigate: (AppScreen) -> Unit
+) {
+  val textStyle = MaterialTheme.typography.bodyMedium
+  val clickableColor = MaterialTheme.colorScheme.primary
+  val activeColor = MaterialTheme.colorScheme.onSurface
+
+  when (currentScreen) {
+    is AppScreen.VeranstalterAuswahl -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstalter auswählen",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.VeranstalterNeu -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstalter-Verwaltung",
+        style = textStyle.copy(color = clickableColor),
+        modifier = Modifier.clickable { onNavigate(AppScreen.VeranstalterVerwaltung) },
+      )
+      BreadcrumbSeparator()
+      Text(
+        text = "Neuer Veranstalter",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.VeranstalterDetail -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstalter-Verwaltung",
+        style = textStyle.copy(color = clickableColor),
+        modifier = Modifier.clickable { onNavigate(AppScreen.VeranstalterVerwaltung) },
+      )
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstalter #${currentScreen.veranstalterId}",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.VeranstaltungProfil -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstalter-Verwaltung",
+        style = textStyle.copy(color = clickableColor),
+        modifier = Modifier.clickable { onNavigate(AppScreen.VeranstalterVerwaltung) },
+      )
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstalter #${currentScreen.veranstalterId}",
+        style = textStyle.copy(color = clickableColor),
+        modifier = Modifier.clickable {
+          onNavigate(AppScreen.VeranstalterDetail(currentScreen.veranstalterId))
+        },
+      )
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstaltung #${currentScreen.veranstaltungId}",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.VeranstaltungVerwaltung -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstaltungs-Verwaltung",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.VeranstaltungDetail -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstaltungs-Verwaltung",
+        style = textStyle.copy(color = clickableColor),
+        modifier = Modifier.clickable { onNavigate(AppScreen.VeranstaltungVerwaltung) },
+      )
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstaltung #${currentScreen.id}",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.VeranstaltungNeu -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstaltungs-Verwaltung",
+        style = textStyle.copy(color = clickableColor),
+        modifier = Modifier.clickable { onNavigate(AppScreen.VeranstaltungVerwaltung) },
+      )
+      BreadcrumbSeparator()
+      Text(
+        text = "Neue Veranstaltung",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.TurnierDetail -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstaltung #${currentScreen.veranstaltungId}",
+        style = textStyle.copy(color = clickableColor),
+        modifier = Modifier.clickable {
+          onNavigate(AppScreen.VeranstaltungDetail(currentScreen.veranstaltungId))
+        },
+      )
+      BreadcrumbSeparator()
+      Text(
+        text = "Turnier #${currentScreen.turnierId}",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.TurnierNeu -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstaltung #${currentScreen.veranstaltungId}",
+        style = textStyle.copy(color = clickableColor),
+        modifier = Modifier.clickable {
+          onNavigate(AppScreen.VeranstaltungDetail(currentScreen.veranstaltungId))
+        },
+      )
+      BreadcrumbSeparator()
+      Text(
+        text = "Neues Turnier",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.Billing -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Veranstaltung #${currentScreen.veranstaltungId}",
+        style = textStyle.copy(color = clickableColor),
+        modifier = Modifier.clickable {
+          onNavigate(AppScreen.VeranstaltungDetail(currentScreen.veranstaltungId))
+        },
+      )
+      BreadcrumbSeparator()
+      Text(
+        text = "Turnier #${currentScreen.turnierId}",
+        style = textStyle.copy(color = clickableColor),
+        modifier = Modifier.clickable {
+          onNavigate(AppScreen.TurnierDetail(currentScreen.veranstaltungId, currentScreen.turnierId))
+        },
+      )
+      BreadcrumbSeparator()
+      Text(
+        text = "Abrechnung",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.StammdatenImport -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "ZNS Stammdaten Import",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.Vereine -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Vereine",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.Reiter -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Reiter",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.Pferde -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Pferde",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.FunktionaerVerwaltung -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Richter-Verwaltung",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.NennungsEingang -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Nennungs-Eingang",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.ConnectivityCheck -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Connectivity Check",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.DeviceInitialization -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Geräte-Initialisierung",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    is AppScreen.Login -> {
+      BreadcrumbSeparator()
+      Text(
+        text = "Administrator-Login",
+        style = textStyle.copy(fontWeight = FontWeight.SemiBold, color = activeColor),
+      )
+    }
+
+    else -> {
+      // Generischer Fall für ungelistete Screens
+    }
+  }
+}
+
+@Composable
+private fun BreadcrumbSeparator() {
+  Icon(
+    imageVector = Icons.Default.ChevronRight,
+    contentDescription = null,
+    modifier = Modifier.size(16.dp).padding(horizontal = 4.dp),
+    tint = MaterialTheme.colorScheme.outline
+  )
+}
Author	SHA1	Message	Date
StefanMoCoAt	edfe05cbe3	chore: entferne ungenutzte Importe, reduziere Redundanz in DesktopMainLayout und verlagere Komponenten in Module Some checks failed Desktop CI — Headless Tests & Build / Compose Desktop — Tests (headless) & Build (push) Has been cancelled Details Build and Publish Docker Images / build-and-push (., backend/infrastructure/gateway/Dockerfile, api-gateway, api-gateway) (push) Has been cancelled Details Build and Publish Docker Images / build-and-push (., backend/services/ping/Dockerfile, ping-service, ping-service) (push) Has been cancelled Details Build and Publish Docker Images / build-and-push (., config/docker/caddy/web-app/Dockerfile, web-app, web-app) (push) Has been cancelled Details Build and Publish Docker Images / build-and-push (., config/docker/keycloak/Dockerfile, keycloak, keycloak) (push) Has been cancelled Details Signed-off-by: StefanMoCoAt <stefan.mo.co@gmail.com>	2026-04-20 15:59:36 +02:00
StefanMoCoAt	6feb139a46	chore: füge `SyncManager` und Peer-Zähler hinzu, verbessere Navigation-Breadcrumbs und passe MD3-Stil an Signed-off-by: StefanMoCoAt <stefan.mo.co@gmail.com>	2026-04-20 15:09:25 +02:00
StefanMoCoAt	b94e0f2d9d	chore: implementiere Zustandsprüfung für `DiscoveryService` und `ConnectivityTracker`, verbessere Plug-and-Play-Kompatibilität und optimiere LAN-Discovery Signed-off-by: StefanMoCoAt <stefan.mo.co@gmail.com>	2026-04-20 14:39:48 +02:00
StefanMoCoAt	8806d11e3c	chore: implementiere Auth-Status-abhängige Navigation und Icons, deaktiviere Module ohne Initialisierung und passe NavRail sowie Header für besseren UX an Signed-off-by: StefanMoCoAt <stefan.mo.co@gmail.com>	2026-04-20 14:23:47 +02:00
StefanMoCoAt	a1bf93342e	chore: fix 500 errors in `ping-service`, improve security annotations, update parameter mapping, integrate Resilience4j with Kotlin, and refine test suite	2026-04-20 14:21:53 +02:00