前端：

1、完善创建群聊逻辑
后端：
1、完善群聊相关接口

backend/IM_API/Models/Grouprequest.cs

@@ -37,5 +37,5 @@ public partial class GroupRequest
 
     public virtual Group Group { get; set; } = null!;
 
-    public virtual User GroupNavigation { get; set; } = null!;
+    public virtual User User { get; set; } = null!;
 }

backend/IM_API/Models/ImContext.cs

@@ -475,8 +475,8 @@ public partial class ImContext : DbContext
                 .OnDelete(DeleteBehavior.ClientSetNull)
                 .HasConstraintName("group_request_ibfk_1");
 
-            entity.HasOne(d => d.GroupNavigation).WithMany(p => p.GroupRequests)
-                .HasForeignKey(d => d.GroupId)
+            entity.HasOne(d => d.User).WithMany(p => p.GroupRequests)
+                .HasForeignKey(d => d.UserId)
                 .OnDelete(DeleteBehavior.ClientSetNull)
                 .HasConstraintName("group_request_ibfk_2");
         });