Shop-Leiste im TFT-Stil: Cards mit Splash, Trait-Pills, Shine, Upgrade-Sterne, Lock, Gold/Streak-Pills

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

backend/tests/test_game.py

@@ -79,3 +79,11 @@ def test_invalid_actions_raise(art, cfg):
         game.buy_xp()
     with pytest.raises(InvalidAction):
         game.sell("bench", 0)
+
+
+def test_shop_lock_survives_step(art, cfg):
+    game = Game(art, cfg, seed=2)
+    game.toggle_lock()
+    before = list(game.shop)
+    game.step()
+    assert game.shop == before