[Puzzles] Add basic framework for ScriptableObject puzzle steps and puzzle solving.

Assets/Scripts/ObjectiveStepBehaviour.cs

@@ -0,0 +1,55 @@
+using UnityEngine;
+
+[RequireComponent(typeof(Interactable))]
+public class ObjectiveStepBehaviour : MonoBehaviour
+{
+    public PuzzleStepSO stepData;
+    private Interactable interactable;
+    private bool isUnlocked = false;
+
+    void Awake()
+    {
+        interactable = GetComponent<Interactable>();
+        if (interactable != null)
+        {
+            interactable.Interacted += OnInteracted;
+        }
+        // Register with PuzzleManager
+        PuzzleManager.Instance?.RegisterStepBehaviour(this);
+    }
+
+    void OnDestroy()
+    {
+        if (interactable != null)
+        {
+            interactable.Interacted -= OnInteracted;
+        }
+        PuzzleManager.Instance?.UnregisterStepBehaviour(this);
+    }
+
+    public void UnlockStep()
+    {
+        isUnlocked = true;
+        Debug.Log($"[Puzzles] Step unlocked: {stepData?.stepId} on {gameObject.name}");
+        // Optionally, show visual feedback for unlocked state
+    }
+
+    public void LockStep()
+    {
+        isUnlocked = false;
+        Debug.Log($"[Puzzles] Step locked: {stepData?.stepId} on {gameObject.name}");
+        // Optionally, show visual feedback for locked state
+    }
+
+    public bool IsStepUnlocked()
+    {
+        return isUnlocked;
+    }
+
+    private void OnInteracted()
+    {
+        if (!isUnlocked) return;
+        Debug.Log($"[Puzzles] Step interacted: {stepData?.stepId} on {gameObject.name}");
+        PuzzleManager.Instance?.OnStepCompleted(stepData);
+    }
+}