chore: erweitere Veranstaltungs-Wizard um Ansprechperson-Anzeige, verbessere Fehlerhandling bei fehlenden Stammdaten und implementiere MsStringDropdown

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

@@ -52,7 +52,7 @@ class DeviceInitializationViewModel(
   }
 
   fun setNetworkRole(role: NetworkRole) {
-    if (uiState.value.settings.deviceName.isNotBlank() || uiState.value.settings.sharedKey.isNotBlank()) {
+    if (uiState.value.settings.networkRole != role && (uiState.value.settings.deviceName.isNotBlank() || uiState.value.settings.sharedKey.isNotBlank())) {
       _uiState.update { it.copy(showRoleChangeWarning = true, pendingRole = role) }
     } else {
       println("[DeviceInit] Netzwerk-Rolle direkt gesetzt: $role")

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

@@ -30,9 +30,11 @@ import androidx.compose.ui.text.input.VisualTransformation
 import androidx.compose.ui.unit.dp
 import at.mocode.frontend.core.designsystem.components.MsEnumDropdown
 import at.mocode.frontend.core.designsystem.components.MsFilePicker
+import at.mocode.frontend.core.designsystem.components.MsStringDropdown
 import at.mocode.frontend.core.designsystem.components.MsTextField
 import at.mocode.frontend.features.device.initialization.domain.DeviceInitializationValidator
 import at.mocode.frontend.features.device.initialization.domain.model.NetworkRole
+import javax.print.PrintServiceLookup
 
 @Composable
 actual fun DeviceInitializationConfig(
@@ -94,14 +96,18 @@ actual fun DeviceInitializationConfig(
         enabled = !uiState.isLocked
       )
 
-      MsTextField(
-        value = settings.defaultPrinter,
-        onValueChange = { viewModel.updateSettings { s -> s.copy(defaultPrinter = it) } },
+      val printers = remember {
+        PrintServiceLookup.lookupPrintServices(null, null).map { it.name }.sorted()
+      }
+
+      MsStringDropdown(
         label = "Standard-Drucker",
-        placeholder = "z.B. Brother-HL-L2350DW",
+        options = printers,
+        selectedOption = settings.defaultPrinter,
+        onOptionSelected = { viewModel.updateSettings { s -> s.copy(defaultPrinter = it) } },
+        placeholder = "Drucker auswählen...",
         enabled = !uiState.isLocked,
-        imeAction = ImeAction.Done,
-        keyboardActions = KeyboardActions(onDone = { focusManager.clearFocus() })
+        modifier = Modifier.padding(bottom = 8.dp)
       )
 
       if (settings.networkRole == NetworkRole.MASTER) {