- MVP架构重构聊天逻辑

- 优化聊天气泡体验
- 修复prompt bug
- 实现聊天次数限制功能（未接服务端）
- 实现情绪切视频功能

assets/bundles/Chat18x/GirlDetailPanel.prefab

@@ -988,10 +988,7 @@
       "b": 255,
       "a": 255
     },
-    "_spriteFrame": {
-      "__uuid__": "71a3fa99-cfe5-4e71-a5c9-5bb17e8b581c@f9941",
-      "__expectedType__": "cc.SpriteFrame"
-    },
+    "_spriteFrame": null,
     "_type": 1,
     "_fillType": 0,
     "_sizeMode": 0,
@@ -2782,6 +2779,8 @@
       "__id__": 0
     },
     "fileId": "4bIjG6OVhOephwylq+9Wxq",
+    "instance": null,
+    "targetOverrides": null,
     "nestedPrefabInstanceRoots": null
   },
   {