refactor(core, veranstaltung): Exception-Handling vereinfacht und Delay-Angabe optimiert

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

frontend/shells/meldestelle-desktop/src/jvmMain/kotlin/at/mocode/desktop/v2/VeranstaltungScreens.kt

@@ -29,6 +29,7 @@ import java.time.ZoneId
 import java.time.format.DateTimeFormatter
 import javax.swing.JFileChooser
 import javax.swing.filechooser.FileNameExtensionFilter
+import kotlin.time.Duration.Companion.milliseconds
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -541,12 +542,12 @@ fun VeranstaltungKonfigV2(
 
               val dateVon = try {
                 LocalDate.parse(von, dateFormatter)
-              } catch (e: Exception) {
+              } catch (_: Exception) {
                 null
               }
               val dateBis = try {
                 LocalDate.parse(bis, dateFormatter)
-              } catch (e: Exception) {
+              } catch (_: Exception) {
                 null
               }
               val today = LocalDate.now()
@@ -728,12 +729,12 @@ fun VeranstaltungKonfigV2(
             2 -> {
               val dVon = try {
                 LocalDate.parse(von, dateFormatter)
-              } catch (e: Exception) {
+              } catch (_: Exception) {
                 null
               }
               val dBis = try {
                 LocalDate.parse(bis, dateFormatter)
-              } catch (e: Exception) {
+              } catch (_: Exception) {
                 null
               }
               val today2 = LocalDate.now()
@@ -1086,12 +1087,12 @@ fun TurnierWizardV2(
             val vBis = veranstaltung?.datumBis?.let { LocalDate.parse(it) }
             val tVon = try {
               LocalDate.parse(von)
-            } catch (e: Exception) {
+            } catch (_: Exception) {
               null
             }
             val tBis = if (bis.isBlank()) tVon else try {
               LocalDate.parse(bis)
-            } catch (e: Exception) {
+            } catch (_: Exception) {
               null
             }
 
@@ -1267,7 +1268,7 @@ private fun Step1Basics(
             CircularProgressIndicator()
 
             LaunchedEffect(Unit) {
-              kotlinx.coroutines.delay(2000)
+              kotlinx.coroutines.delay(2000.milliseconds)
               onZnsDataLoadedChange(true)
               showImportProgress = false
             }
@@ -1295,12 +1296,12 @@ private fun Step2Sparten(
   val vBis = veranstaltung?.datumBis?.let { LocalDate.parse(it) }
   val tVon = try {
     LocalDate.parse(von)
-  } catch (e: Exception) {
+  } catch (_: Exception) {
     null
   }
   val tBis = if (bis.isBlank()) tVon else try {
     LocalDate.parse(bis)
-  } catch (e: Exception) {
+  } catch (_: Exception) {
     null
   }