Add Monster Spawn points, monster head placeholders. Add utility for prefab variation by sprite selection.

Assets/Scripts/Minigames/DivingForPictures/MonsterSpawnPoint.cs

@@ -0,0 +1,25 @@
+using UnityEngine;
+
+namespace Minigames.DivingForPictures
+{
+    public class MonsterSpawnPoint : MonoBehaviour
+    {
+        [Tooltip("Visual radius for spawn point in editor")]
+        public float gizmoRadius = 0.5f;
+
+        // Visual indicator for editor only
+        private void OnDrawGizmos()
+        {
+            Gizmos.color = Color.red;
+            Gizmos.DrawWireSphere(transform.position, gizmoRadius);
+
+            // Draw a cross in the center for better visibility
+            Gizmos.DrawLine(
+                transform.position + Vector3.left * gizmoRadius * 0.5f,
+                transform.position + Vector3.right * gizmoRadius * 0.5f);
+            Gizmos.DrawLine(
+                transform.position + Vector3.up * gizmoRadius * 0.5f,
+                transform.position + Vector3.down * gizmoRadius * 0.5f);
+        }
+    }
+}