fix: version schema ref error (#5518)

document/content/docs/upgrading/4-12/4122.mdx

@@ -21,6 +21,7 @@ description: 'FastGPT V4.12.2 更新说明'
 4. 用户同步可能出现写冲突问题。
 5. 无法完全关闭系统套餐，会存在空对象默认值，导致鉴权异常。
 6. 工作流，添加团队应用，搜索无效。
+7. 应用版本，ref 字段错误，导致无法正常使用。
 
 ## 🔨 工具更新
 

document/data/doc-last-modified.json

@@ -104,7 +104,7 @@
   "document/content/docs/upgrading/4-11/4111.mdx": "2025-08-07T22:49:09+08:00",
   "document/content/docs/upgrading/4-12/4120.mdx": "2025-08-12T22:45:19+08:00",
   "document/content/docs/upgrading/4-12/4121.mdx": "2025-08-15T22:53:06+08:00",
-  "document/content/docs/upgrading/4-12/4122.mdx": "2025-08-22T09:38:44+08:00",
+  "document/content/docs/upgrading/4-12/4122.mdx": "2025-08-22T10:18:24+08:00",
   "document/content/docs/upgrading/4-8/40.mdx": "2025-08-02T19:38:37+08:00",
   "document/content/docs/upgrading/4-8/41.mdx": "2025-08-02T19:38:37+08:00",
   "document/content/docs/upgrading/4-8/42.mdx": "2025-08-02T19:38:37+08:00",

packages/service/core/app/version/schema.ts

-import { connectionMongo, getMongoModel, type Model } from '../../../common/mongo';
-const { Schema, model, models } = connectionMongo;
+import { connectionMongo, getMongoModel } from '../../../common/mongo';
+const { Schema } = connectionMongo;
 import { type AppVersionSchemaType } from '@fastgpt/global/core/app/version';
-import { chatConfigType } from '../schema';
+import { AppCollectionName, chatConfigType } from '../schema';
 import { TeamMemberCollectionName } from '@fastgpt/global/support/user/team/constant';
 
 export const AppVersionCollectionName = 'app_versions';
@@ -15,7 +15,7 @@ const AppVersionSchema = new Schema(
     },
     appId: {
       type: Schema.Types.ObjectId,
-      ref: AppVersionCollectionName,
+      ref: AppCollectionName,
       required: true
     },
     time: {
@@ -41,11 +41,7 @@ const AppVersionSchema = new Schema(
   }
 );
 
-try {
-  AppVersionSchema.index({ appId: 1, time: -1 });
-} catch (error) {
-  console.log(error);
-}
+AppVersionSchema.index({ appId: 1, _id: -1 });
 
 export const MongoAppVersion = getMongoModel<AppVersionSchemaType>(
   AppVersionCollectionName,

projects/app/src/pages/api/core/app/version/list.ts

@@ -34,7 +34,7 @@ async function handler(
     (async () => {
       const versions = await MongoAppVersion.find(match)
         .sort({
-          time: -1
+          _id: -1
         })
         .skip(offset)
         .limit(pageSize)