fix(auth): 登录接口同时接受 account 和 username 字段

reading-platform-java/src/main/java/com/reading/platform/dto/request/LoginRequest.java

@@ -1,5 +1,6 @@
 package com.reading.platform.dto.request;
 
+import com.fasterxml.jackson.annotation.JsonAlias;
 import io.swagger.v3.oas.annotations.media.Schema;
 import jakarta.validation.constraints.NotBlank;
 import lombok.Data;
@@ -9,6 +10,7 @@ import lombok.Data;
 public class LoginRequest {
 
     @NotBlank(message = "Username is required")
+    @JsonAlias("account")
     @Schema(description = "Username", example = "admin")
     private String username;