feat: füge DraftStore und Speichern/Resume von Wizard-Status hinzu

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

frontend/features/veranstaltung-feature/src/jvmMain/kotlin/at/mocode/veranstaltung/feature/presentation/EventWizardScreen.kt

@@ -42,7 +42,7 @@ fun EventWizardScreen(
         if (state.currentStep == WizardStep.ZNS_CHECK) onBack() else viewModel.previousStep()
       },
       onNext = { viewModel.nextStep() },
-      onSaveDraft = null, // Wird in einem Folge-Inkrement angebunden
+      onSaveDraft = { viewModel.saveDraft() },
       onFinish = onFinish,
       onNavigateToVeranstalterNeu = onNavigateToVeranstalterNeu,
       renderStep = {

frontend/features/veranstaltung-feature/src/jvmMain/kotlin/at/mocode/veranstaltung/feature/presentation/EventWizardViewModel.kt

@@ -14,6 +14,7 @@ import at.mocode.frontend.core.domain.zns.ZnsImportProvider
 import at.mocode.frontend.core.domain.zns.ZnsRemoteVerein
 import at.mocode.frontend.core.navigation.AppScreen
 import at.mocode.frontend.core.network.NetworkConfig
+import at.mocode.frontend.core.wizard.draft.DraftStoreMemory
 import at.mocode.frontend.core.wizard.runtime.WizardContext
 import at.mocode.frontend.core.wizard.runtime.WizardState
 import at.mocode.frontend.core.wizard.samples.DemoEventAcc
@@ -87,6 +88,8 @@ class EventWizardViewModel(
 
   // --- Orchestrator-Integration (minimal, 2 Steps) ---
   private var wizardState: WizardState<DemoEventStep, DemoEventAcc>? = null
+  private val draftFlowKey = "event_wizard_v1"
+  private val draftFlowVersion = 1
 
   init {
     checkZnsAvailability()
@@ -100,8 +103,19 @@ class EventWizardViewModel(
 
     // Initialisiere WizardRuntime-State (hinter Feature-Flag nutzbar)
     if (WizardFeatureFlags.WizardRuntimeEnabled) {
-      @Suppress("UNCHECKED_CAST")
-      wizardState = WizardState(current = (DemoEventStep.ZnsCheck as DemoEventStep), acc = DemoEventAcc())
+      // Resume Draft, falls vorhanden
+      val draft = DraftStoreMemory.load(draftFlowKey)
+      if (draft != null) {
+        val step = parseWizardStep(draft.second)
+        // Mappe auf Runtime-Step
+        val runtimeStep = mapFromWizardStep(step)
+        @Suppress("UNCHECKED_CAST")
+        wizardState = WizardState(current = (runtimeStep as DemoEventStep), acc = DemoEventAcc())
+        state = state.copy(currentStep = step)
+      } else {
+        @Suppress("UNCHECKED_CAST")
+        wizardState = WizardState(current = (DemoEventStep.ZnsCheck as DemoEventStep), acc = DemoEventAcc())
+      }
     }
   }
 
@@ -192,6 +206,7 @@ class EventWizardViewModel(
       val mapped = mapToWizardStep(next.current)
       if (mapped != null) {
         state = state.copy(currentStep = mapped)
+        saveDraftInternal(mapped)
         return
       }
       // Fallback, sollte eigentlich nicht eintreten
@@ -215,6 +230,7 @@ class EventWizardViewModel(
       val mapped = mapToWizardStep(prev.current)
       if (mapped != null) {
         state = state.copy(currentStep = mapped)
+        saveDraftInternal(mapped)
         return
       }
     }
@@ -242,6 +258,16 @@ class EventWizardViewModel(
     @Suppress("UNCHECKED_CAST")
     val initial = WizardState(current = (DemoEventStep.ZnsCheck as DemoEventStep), acc = DemoEventAcc())
     wizardState = initial
+    // Beim ersten Zugriff auch evtl. gespeicherten Draft berücksichtigen
+    DraftStoreMemory.load(draftFlowKey)?.let { (_, stepName) ->
+      val parsed = parseWizardStep(stepName)
+      val runtime = mapFromWizardStep(parsed)
+      @Suppress("UNCHECKED_CAST")
+      val resumed = initial.copy(current = (runtime as DemoEventStep))
+      wizardState = resumed
+      state = state.copy(currentStep = parsed)
+      return resumed
+    }
     return initial
   }
 
@@ -260,6 +286,30 @@ class EventWizardViewModel(
     DemoEventStep.MetaData -> WizardStep.META_DATA
   }
 
+  private fun mapFromWizardStep(step: WizardStep): DemoEventStep = when (step) {
+    WizardStep.ZNS_CHECK -> DemoEventStep.ZnsCheck
+    WizardStep.VERANSTALTER_SELECTION -> DemoEventStep.VeranstalterSelection
+    WizardStep.ANSPRECHPERSON_MAPPING -> DemoEventStep.AnsprechpersonMapping
+    WizardStep.META_DATA -> DemoEventStep.MetaData
+    // Noch nicht im Runtime-Flow migriert: mappe konservativ auf letzten bekannten Schritt
+    WizardStep.TURNIER_ANLAGE -> DemoEventStep.MetaData
+    WizardStep.SUMMARY -> DemoEventStep.MetaData
+  }
+
+  private fun parseWizardStep(name: String): WizardStep = try {
+    WizardStep.valueOf(name)
+  } catch (_: Exception) {
+    WizardStep.ZNS_CHECK
+  }
+
+  private fun saveDraftInternal(step: WizardStep) {
+    DraftStoreMemory.save(draftFlowKey, draftFlowVersion, step.name)
+  }
+
+  fun saveDraft() {
+    saveDraftInternal(state.currentStep)
+  }
+
   fun setVeranstalter(id: Uuid, nummer: String, name: String, standardOrt: String, logo: String?) {
     state = state.copy(
       veranstalterId = id,