chore: implementiere Suche nach Veranstalter via OEPS-Nummer, verbessere UI-Flow im Veranstaltungs-Wizard und erweitere VereinRepository um OEPS-Abfrage

Signed-off-by: StefanMoCoAt <stefan.mo.co@gmail.com>

frontend/features/device-initialization/src/commonMain/kotlin/at/mocode/frontend/features/device/initialization/presentation/DeviceInitializationViewModel.kt

@@ -23,6 +23,16 @@ class DeviceInitializationViewModel(
   val uiState: StateFlow<DeviceInitializationUiState> = _uiState.asStateFlow()
 
   init {
+    val existingSettings = at.mocode.frontend.features.device.initialization.data.local.DeviceInitializationSettingsManager.loadSettings()
+    if (existingSettings != null) {
+      println("[DeviceInit] Bestehende Einstellungen geladen.")
+      _uiState.update { it.copy(
+        settings = existingSettings,
+        isLocked = existingSettings.isConfigured,
+        currentStep = 1 // Direkt zu Schritt 2 (Konfig), da Rolle schon gewählt
+      ) }
+    }
+
     viewModelScope.launch {
       discoveryService.discoveredServices.collect { services ->
         _uiState.update { it.copy(discoveredMasters = services) }

frontend/features/device-initialization/src/jvmMain/kotlin/at/mocode/frontend/features/device/initialization/presentation/DeviceInitializationConfig.jvm.kt

@@ -119,17 +119,15 @@ actual fun DeviceInitializationConfig(
           steps = 59,
           enabled = !uiState.isLocked
         )
-      } else {
+      } else if (!uiState.isLocked) {
         // Button zum Abschließen für Clients, da diese keinen Slider/Clients haben
         Spacer(Modifier.height(8.dp))
-        if (!uiState.isLocked) {
-          Button(
-            onClick = { viewModel.completeInitialization() },
-            modifier = Modifier.fillMaxWidth(),
-            enabled = DeviceInitializationValidator.canContinue(settings)
-          ) {
-            Text("Konfiguration abschließen")
-          }
+        Button(
+          onClick = { viewModel.completeInitialization() },
+          modifier = Modifier.fillMaxWidth(),
+          enabled = DeviceInitializationValidator.canContinue(settings)
+        ) {
+          Text("Konfiguration abschließen")
         }
       }
 
@@ -245,7 +243,7 @@ actual fun DeviceInitializationConfig(
             Text("Client hinzufügen")
           }
         }
-    } else if (settings.networkRole != NetworkRole.MASTER) {
+    } else if (settings.networkRole != NetworkRole.MASTER && !uiState.isLocked) {
         HorizontalDivider(Modifier, DividerDefaults.Thickness, DividerDefaults.color)
         Text("🔍 Verfügbare Master im Netzwerk", style = MaterialTheme.typography.titleSmall)
 
@@ -277,7 +275,7 @@ actual fun DeviceInitializationConfig(
           color = MaterialTheme.colorScheme.onSurfaceVariant
         )
       }
-      if (settings.networkRole == NetworkRole.MASTER && uiState.isLocked) {
+      if (settings.networkRole == NetworkRole.MASTER && uiState.isLocked && settings.expectedClients.isNotEmpty()) {
         HorizontalDivider(Modifier, DividerDefaults.Thickness, DividerDefaults.color)
         Text("👥 Erwartete Clients", style = MaterialTheme.typography.titleSmall)
         settings.expectedClients.forEach { client ->