feat(client): 实现自定义开屏图片功能

- 在 ClientAccount 实体中新增 splashImage 字段用于存储开屏图片URL
- 在 ClientAccountController 中添加上传、获取和删除开屏图片的接口
- 集成七牛云存储实现图片上传功能，支持图片格式和大小校验
- 使用 Redis 缓存开屏图片URL，提升访问性能
- 在客户端登录成功后异步加载并保存开屏图片配置
- 新增 splashApi 模块封装开屏图片相关HTTP请求- 在主进程中实现开屏图片配置的持久化存储和读取
- 在设置页面中增加开屏图片管理界面，支持上传、预览和删除操作
- 修改 splash.html 支持动态加载自定义开屏图片
- 调整 CSP 策略允许加载本地和HTTPS图片资源

ruoyi-system/src/main/java/com/ruoyi/system/domain/BanmaAccount.java

@@ -1,5 +1,4 @@
 package com.ruoyi.system.domain;
-
 import java.util.Date;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.ruoyi.common.core.domain.BaseEntity;
@@ -9,7 +8,6 @@ import com.ruoyi.common.core.domain.BaseEntity;
  */
 public class BanmaAccount extends BaseEntity {
     private static final long serialVersionUID = 1L;
-
     private Long id;
     /** 显示名 */
     private String name;

ruoyi-system/src/main/java/com/ruoyi/system/domain/ClientAccount.java

@@ -55,6 +55,9 @@ public class ClientAccount extends BaseEntity
     @Excel(name = "账号类型")
     private String accountType; // trial试用, paid付费
 
+    /** 开屏图片URL */
+    private String splashImage;
+
     public void setId(Long id)
     {
         this.id = id;
@@ -161,4 +164,14 @@ public class ClientAccount extends BaseEntity
     {
         return accountType;
     }
+
+    public void setSplashImage(String splashImage)
+    {
+        this.splashImage = splashImage;
+    }
+
+    public String getSplashImage()
+    {
+        return splashImage;
+    }
 }

ruoyi-system/src/main/resources/mapper/system/ClientAccountMapper.xml

@@ -16,6 +16,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <result property="permissions"       column="permissions"       />
         <result property="deviceLimit"       column="device_limit"      />
         <result property="accountType"       column="account_type"      />
+        <result property="splashImage"       column="splash_image"      />
         <result property="createBy"          column="create_by"         />
         <result property="createTime"        column="create_time"       />
         <result property="updateBy"          column="update_by"         />
@@ -24,7 +25,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 
     <sql id="selectClientAccountVo">
         select id, account_name, username, password, status, expire_time,
-               allowed_ip_range, remark, permissions, device_limit, account_type, create_by, create_time, update_by, update_time
+               allowed_ip_range, remark, permissions, device_limit, account_type, splash_image, create_by, create_time, update_by, update_time
         from client_account
     </sql>
 
@@ -61,6 +62,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="permissions != null">permissions,</if>
             <if test="deviceLimit != null">device_limit,</if>
             <if test="accountType != null">account_type,</if>
+            <if test="splashImage != null">splash_image,</if>
             <if test="createBy != null">create_by,</if>
             create_time
          </trim>
@@ -75,6 +77,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="permissions != null">#{permissions},</if>
             <if test="deviceLimit != null">#{deviceLimit},</if>
             <if test="accountType != null">#{accountType},</if>
+            <if test="splashImage != null">#{splashImage},</if>
             <if test="createBy != null">#{createBy},</if>
             sysdate()
          </trim>
@@ -93,6 +96,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="permissions != null">permissions = #{permissions},</if>
             <if test="deviceLimit != null">device_limit = #{deviceLimit},</if>
             <if test="accountType != null">account_type = #{accountType},</if>
+            <if test="splashImage != null">splash_image = #{splashImage},</if>
             <if test="updateBy != null">update_by = #{updateBy},</if>
             update_time = sysdate()
         </trim>