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/domain/entities/user.dart

@@ -14,15 +14,81 @@
 ///           → View 渲染
 /// ```
 class User {
-  final String id;
-  final String email;
+  final int uid;
+  final String? uuid;
+  final int? lastOnline;
+  final String? profilePic;
+  final String? profilePicGaussian;
   final String? nickname;
-  final String? avatar;
+  final String? contact;
+  final String? countryCode;
+  final String? email;
+  final String? recoveryEmail;
+  final String? username;
+  final String? bio;
+  final int? relationship;
+  final String? userAlias;
+  final int? channelId;
+  final int? channelGroupId;
+  final String? hint;
 
   const User({
-    required this.id,
-    required this.email,
+    required this.uid,
+    this.uuid,
+    this.lastOnline,
+    this.profilePic,
+    this.profilePicGaussian,
     this.nickname,
-    this.avatar,
+    this.contact,
+    this.countryCode,
+    this.email,
+    this.recoveryEmail,
+    this.username,
+    this.bio,
+    this.relationship,
+    this.userAlias,
+    this.channelId,
+    this.channelGroupId,
+    this.hint,
   });
-}
+
+  User copyWith({
+    int? uid,
+    String? uuid,
+    int? lastOnline,
+    String? profilePic,
+    String? profilePicGaussian,
+    String? nickname,
+    String? contact,
+    String? countryCode,
+    String? email,
+    String? recoveryEmail,
+    String? username,
+    String? bio,
+    int? relationship,
+    String? userAlias,
+    int? channelId,
+    int? channelGroupId,
+    String? hint,
+  }) {
+    return User(
+      uid: uid ?? this.uid,
+      uuid: uuid ?? this.uuid,
+      lastOnline: lastOnline ?? this.lastOnline,
+      profilePic: profilePic ?? this.profilePic,
+      profilePicGaussian: profilePicGaussian ?? this.profilePicGaussian,
+      nickname: nickname ?? this.nickname,
+      contact: contact ?? this.contact,
+      countryCode: countryCode ?? this.countryCode,
+      email: email ?? this.email,
+      recoveryEmail: recoveryEmail ?? this.recoveryEmail,
+      username: username ?? this.username,
+      bio: bio ?? this.bio,
+      relationship: relationship ?? this.relationship,
+      userAlias: userAlias ?? this.userAlias,
+      channelId: channelId ?? this.channelId,
+      channelGroupId: channelGroupId ?? this.channelGroupId,
+      hint: hint ?? this.hint,
+    );
+  }
+}