feat: Enhance CameraZoneMigrationTool with rectilinear polygon reconstruction and fallback handling

- Implemented a new method for reconstructing rectilinear polygons from trigger points.
- Added a fallback mechanism using nearest neighbor ordering and 2-opt optimization for irregular shapes.
- Updated point sorting to ensure counter-clockwise orientation for polygon colliders.

fix: Suppress validation warnings during batch enemy placement in SceneObjectPlacerTool

- Introduced a static property in EnemyBase to suppress validation warnings during editor object placement.
- Updated SceneObjectPlacerTool to utilize this property when creating enemy game objects.

refactor: Clean up OnValidate method in EnemyBase to respect suppression flag

- Modified OnValidate to check for the suppression flag before logging warnings about missing configurations.

Assets/_Game/Scripts/Enemies/EnemyBase.cs

@@ -710,8 +710,12 @@ namespace BaseGames.Enemies
         }
 
 #if UNITY_EDITOR
+        /// <summary>Set to true during batch editor placement to suppress mid-wiring OnValidate warnings.</summary>
+        public static bool SuppressValidationWarnings { get; set; }
+
         protected virtual void OnValidate()
         {
+            if (SuppressValidationWarnings) return;
             if (_statsSO == null)
                 Debug.LogWarning($"[EnemyBase] {gameObject.name} 缺少 EnemyStatsSO 配置（运行时会 NullRef）。", this);
             if (_stats == null)