feat: 添加出牌动画和牌型排序显示

- 修复 AI decide 方法参数类型为 Array[Card]
- 添加 cards_played 和 player_passed 信号
- 出牌时在桌面中央显示排序后的卡牌
- 过牌时清除桌面牌
- 添加延迟动画效果（0.8秒显示，0.5秒清除）
- 添加 TableLabel 作为出牌显示区域
- 出牌按 rank 排序显示

🤖 Generated with [Qoder][https://qoder.com]

tests/test_deck_load.gd

@@ -1,9 +0,0 @@
-extends SceneTree
-
-func _initialize():
-	var d = load("res://src/core/deck.gd")
-	if d:
-		print("Deck loaded: ", d)
-	else:
-		print("FAIL: Deck not found")
-	quit()

tests/test_training_controller.gd

@@ -1,14 +0,0 @@
-extends SceneTree
-
-func _initialize():
-	var t = load("res://src/game/game_controller.gd")
-	if t:
-		print("GameController loaded: ", t)
-	else:
-		print("FAIL: GameController not found")
-	var tc = load("res://src/game/training_controller.gd")
-	if tc:
-		print("TrainingController loaded: ", tc)
-	else:
-		print("FAIL: TrainingController not found")
-	quit()