feat(io,command): map command + GameIO setMap/showMap, console ASCII

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Semesterprojekt/src/test/java/thb/jeanluc/adventure/command/impl/MapCommandTest.java

@@ -0,0 +1,40 @@
+package thb.jeanluc.adventure.command.impl;
+
+import org.junit.jupiter.api.Test;
+import thb.jeanluc.adventure.game.GameContext;
+import thb.jeanluc.adventure.io.TestIO;
+import thb.jeanluc.adventure.model.Direction;
+import thb.jeanluc.adventure.model.Player;
+import thb.jeanluc.adventure.model.Room;
+import thb.jeanluc.adventure.model.World;
+
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class MapCommandTest {
+
+    @Test
+    void map_showsVisitedRoomAndKnownNeighbour() {
+        Room kitchen = new Room("kitchen", "Kitchen", "d");
+        Room hallway = new Room("hallway", "Hallway", "d");
+        kitchen.addExit(Direction.NORTH, hallway);
+        hallway.addExit(Direction.SOUTH, kitchen);
+        Map<String, Room> rooms = new LinkedHashMap<>();
+        rooms.put("kitchen", kitchen);
+        rooms.put("hallway", hallway);
+        World world = new World(rooms, Map.of(), Map.of(), "t", "w");
+
+        Player player = new Player(kitchen, 0);   // visited = {kitchen}; hallway is a KNOWN stub
+        TestIO io = new TestIO();
+        GameContext ctx = new GameContext(world, player, io);
+
+        new MapCommand().execute(ctx, List.of());
+
+        String out = io.allOutput();
+        assertThat(out).contains("Kitchen"); // current room name appears on the map
+        assertThat(out).contains("?");        // unexplored neighbour stub
+    }
+}