refactor(monster): 重构怪物分层显示与战斗逻辑

1.  重构怪物挂载逻辑，按Boss/小怪分别挂载到对应场景层
2.  调整怪物出生落点逻辑，移除额外Y轴偏移
3.  优化场景节点清理范围，新增MON/BOSS层清理
4.  重构渲染排序逻辑，分层管理怪物渲染层级
5.  新增5套攻击技能预制体与动画资源
6.  修复技能配置参数冗余注释与类型错误

assets/resources/game/skill/anm/atk/atk03.anim

@@ -0,0 +1,116 @@
+[
+  {
+    "__type__": "cc.AnimationClip",
+    "_name": "atk01",
+    "_objFlags": 0,
+    "__editorExtras__": {
+      "embeddedPlayerGroups": []
+    },
+    "_native": "",
+    "sample": 24,
+    "speed": 1,
+    "wrapMode": 1,
+    "enableTrsBlending": false,
+    "_duration": 0.20833333333333334,
+    "_hash": 500763545,
+    "_tracks": [
+      {
+        "__id__": 1
+      }
+    ],
+    "_exoticAnimation": null,
+    "_events": [
+      {
+        "frame": 0.08333333333333333,
+        "func": "",
+        "params": []
+      },
+      {
+        "frame": 0.08333333333333333,
+        "func": "atk",
+        "params": []
+      }
+    ],
+    "_embeddedPlayers": [],
+    "_additiveSettings": {
+      "__id__": 7
+    },
+    "_auxiliaryCurveEntries": []
+  },
+  {
+    "__type__": "cc.animation.ObjectTrack",
+    "_binding": {
+      "__type__": "cc.animation.TrackBinding",
+      "path": {
+        "__id__": 2
+      },
+      "proxy": null
+    },
+    "_channel": {
+      "__id__": 5
+    }
+  },
+  {
+    "__type__": "cc.animation.TrackPath",
+    "_paths": [
+      {
+        "__id__": 3
+      },
+      {
+        "__id__": 4
+      },
+      "spriteFrame"
+    ]
+  },
+  {
+    "__type__": "cc.animation.HierarchyPath",
+    "path": "Node"
+  },
+  {
+    "__type__": "cc.animation.ComponentPath",
+    "component": "cc.Sprite"
+  },
+  {
+    "__type__": "cc.animation.Channel",
+    "_curve": {
+      "__id__": 6
+    }
+  },
+  {
+    "__type__": "cc.ObjectCurve",
+    "_times": [
+      0,
+      0.041666666666666664,
+      0.08333333333333333,
+      0.125,
+      0.16666666666666666
+    ],
+    "_values": [
+      {
+        "__uuid__": "2842dc10-d89e-4ff6-8a11-6d09bf48cf20@c9de1",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2842dc10-d89e-4ff6-8a11-6d09bf48cf20@3c745",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2842dc10-d89e-4ff6-8a11-6d09bf48cf20@1ebb0",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2842dc10-d89e-4ff6-8a11-6d09bf48cf20@0e5a2",
+        "__expectedType__": "cc.SpriteFrame"
+      },
+      {
+        "__uuid__": "2842dc10-d89e-4ff6-8a11-6d09bf48cf20@360bd",
+        "__expectedType__": "cc.SpriteFrame"
+      }
+    ]
+  },
+  {
+    "__type__": "cc.AnimationClipAdditiveSettings",
+    "enabled": false,
+    "refClip": null
+  }
+]