fix: 去除share

src/service/models/chat.ts

@@ -15,21 +15,17 @@ const ChatSchema = new Schema({
   expiredTime: {
     // 过期时间
     type: Number,
-    required: true
+    default: Date.now()
   },
   loadAmount: {
     // 剩余加载次数
     type: Number,
-    required: true
+    default: -1
   },
   updateTime: {
     type: Date,
     default: () => new Date()
   },
-  isShare: {
-    type: Boolean,
-    default: false
-  },
   content: {
     type: [
       {