feat: visible AI turns with 800ms delay between each move

desktopApp/src/jvmMain/kotlin/com/uno/desktop/Main.kt

@@ -13,6 +13,7 @@ import androidx.compose.ui.window.application
 import com.uno.game.GameEngine
 import com.uno.game.model.*
 import com.uno.shared.UnoGameScreen
+import kotlinx.coroutines.delay
 
 fun main() = application {
     Window(
@@ -29,6 +30,24 @@ fun UnoDesktopApp() {
     val engine = remember { GameEngine() }
     var gameState by remember { mutableStateOf(engine.startGame()) }
     var gameStarted by remember { mutableStateOf(false) }
+    var isAiThinking by remember { mutableStateOf(false) }
+
+    // KI-Züge mit Verzögerung
+    LaunchedEffect(gameState.currentPlayerIndex, gameState.phase) {
+        if (gameState.currentPlayerIndex != 0
+            && gameState.phase == GamePhase.PLAYING
+            && !gameState.isFinished
+        ) {
+            isAiThinking = true
+            var currentState = gameState
+            while (currentState.currentPlayerIndex != 0 && !currentState.isFinished) {
+                delay(800)
+                currentState = engine.aiPlay(currentState, currentState.currentPlayerIndex)
+                gameState = currentState
+            }
+            isAiThinking = false
+        }
+    }
 
     if (!gameStarted) {
         DesktopStartScreen(onStartGame = { playerCount ->
@@ -40,11 +59,9 @@ fun UnoDesktopApp() {
             state = gameState,
             onPlayCard = { card, color ->
                 gameState = engine.playCard(gameState, 0, card, color)
-                gameState = runAiTurns(engine, gameState)
             },
             onDrawCard = {
                 gameState = engine.drawCard(gameState, 0)
-                gameState = runAiTurns(engine, gameState)
             },
             onCallUno = { gameState = engine.callUno(gameState, 0) }
         )
@@ -52,20 +69,15 @@ fun UnoDesktopApp() {
         if (gameState.isFinished) {
             DesktopGameOverScreen(
                 winner = gameState.winner,
-                onPlayAgain = { gameState = engine.startGame() }
+                onPlayAgain = {
+                    gameState = engine.startGame()
+                    gameStarted = false
+                }
             )
         }
     }
 }
 
-private fun runAiTurns(engine: GameEngine, state: GameState): GameState {
-    var currentState = state
-    while (currentState.currentPlayerIndex != 0 && !currentState.isFinished) {
-        currentState = engine.aiPlay(currentState, currentState.currentPlayerIndex)
-    }
-    return currentState
-}
-
 @Composable
 fun DesktopStartScreen(onStartGame: (Int) -> Unit) {
     Column(