多轮审查和修复

Assets/Scripts/World/Puzzle/PuzzleInterfaces.cs

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+// Assets/Scripts/World/Puzzle/PuzzleInterfaces.cs
+// 谜题系统核心接口（Architecture 21_LiquidPuzzleModule §8）
+using System;
+using UnityEngine;
+
+namespace BaseGames.Puzzle
+{
+    /// <summary>任何可被切换激活/停用状态的谜题元素。</summary>
+    public interface ISwitchable
+    {
+        bool IsActive { get; }
+        event Action<bool> OnStateChanged;
+
+        /// <summary>SaveData 恢复时调用，强制设置状态不触发副作用逻辑。</summary>
+        void ForceState(bool active);
+    }
+
+    /// <summary>可被玩家推动的物件（需 Rigidbody2D）。</summary>
+    public interface IMovable
+    {
+        bool CanBePushed { get; }
+        void OnPushStart(Vector2 direction);
+        void OnPushEnd();
+    }
+
+    /// <summary>接受激活信号后改变自身状态的物件。</summary>
+    public interface IActivatable
+    {
+        void Activate();
+        void Deactivate();
+        bool IsActivated { get; }
+    }
+}