feat: wire TutorialGuide into the game loop; show on New Game only

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Semesterprojekt/src/test/java/thb/jeanluc/adventure/game/GameTutorialTest.java

@@ -0,0 +1,47 @@
+package thb.jeanluc.adventure.game;
+
+import org.junit.jupiter.api.Test;
+import thb.jeanluc.adventure.command.CommandParser;
+import thb.jeanluc.adventure.command.CommandRegistry;
+import thb.jeanluc.adventure.command.impl.LookCommand;
+import thb.jeanluc.adventure.io.TestIO;
+import thb.jeanluc.adventure.model.Player;
+import thb.jeanluc.adventure.model.Room;
+import thb.jeanluc.adventure.model.Tutorial;
+import thb.jeanluc.adventure.model.TutorialStep;
+import thb.jeanluc.adventure.model.World;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class GameTutorialTest {
+
+    @Test
+    void guideBeginsAndAdvancesThenSkipEndsViaLoop() {
+        Room kitchen = new Room("kitchen", "Kitchen", "d");
+        World w = new World(Map.of("kitchen", kitchen), Map.of(), Map.of(), "t", "w");
+        TestIO io = new TestIO();
+        // scripted player input: a matching 'look', then 'skip'; then EOF (null) ends run()
+        io.enqueue("look").enqueue("skip");
+        GameContext ctx = new GameContext(new GameSession(w, new Player(kitchen, 0), "s"), io);
+
+        CommandRegistry registry = new CommandRegistry();
+        registry.register(new LookCommand(), "look", "l");
+
+        Tutorial t = new Tutorial("INTRO",
+                List.of(new TutorialStep("do look", "look", 0, "STEP1-OK", "hint"),
+                        new TutorialStep("do look again", "look", 0, "STEP2-OK", "hint")),
+                "TIPS");
+        Game game = new Game(ctx, registry, new CommandParser());
+        game.setTutorialGuide(new TutorialGuide(t, registry));
+
+        game.run();
+
+        String out = io.allOutput();
+        assertThat(out).contains("INTRO");      // begin printed
+        assertThat(out).contains("STEP1-OK");   // first 'look' advanced step 1
+        assertThat(out).contains("Tutorial skipped"); // 'skip' ended it before step 2 finished
+    }
+}