Enhance authentication logging and update MyBatis configuration

src/main/java/com/gameplatform/server/model/dto/auth/LoginRequest.java

@@ -3,19 +3,13 @@ package com.gameplatform.server.model.dto.auth;
 import jakarta.validation.constraints.NotBlank;
 
 public class LoginRequest {
-    // userType: admin | agent
     @NotBlank
-    private String userType;
-    @NotBlank
-    private String username; // admin: username, agent: loginAccount
+    private String username; // 统一登录名（admin/agent 共用）
     @NotBlank
     private String password;
 
-    public String getUserType() { return userType; }
-    public void setUserType(String userType) { this.userType = userType; }
     public String getUsername() { return username; }
     public void setUsername(String username) { this.username = username; }
     public String getPassword() { return password; }
     public void setPassword(String password) { this.password = password; }
 }
-