1）修改数据库命名，不和业务使用重合。

2）修改user 表，uid为unique, 聊天室文件夹name unique移除

apps/im_app/lib/data/local/drift/tables/users.dart

@@ -1,9 +1,9 @@
 import 'package:drift/drift.dart';
 
-@DataClassName('User')
+@DataClassName('DriftUser')
 class Users extends Table {
   IntColumn get id => integer().autoIncrement()();
-  IntColumn get uid => integer().nullable()();
+  IntColumn get uid => integer().unique()();
   TextColumn get uuid => text().nullable()();
   IntColumn get lastOnline => integer().nullable()();
   TextColumn get profilePic => text().nullable()();
@@ -36,6 +36,7 @@ class Users extends Table {
   TextColumn get publicKey => text().nullable()();
   IntColumn get configBits => integer().withDefault(const Constant(0))();
   TextColumn get hint => text().nullable()();
+
   @override
   String get tableName => 'user';
 }