实现JWT身份认证机制，新增JWT认证过滤器和服务，更新链接生成接口以支持JWT验证，删除旧的用户控制器，添加JWT认证文档，增强错误处理和日志记录。

src/main/java/com/gameplatform/server/model/dto/link/LinkGenerateRequest.java

@@ -7,15 +7,11 @@ public class LinkGenerateRequest {
     private Integer times;
     @Schema(description = "每次打的数量", example = "5")
     private Integer perTimeQuantity;
-    @Schema(description = "为哪个代理账户生成（管理员可指定，代理可省略或为自己）")
-    private Long agentAccountId;
 
     public Integer getTimes() { return times; }
     public void setTimes(Integer times) { this.times = times; }
     public Integer getPerTimeQuantity() { return perTimeQuantity; }
     public void setPerTimeQuantity(Integer perTimeQuantity) { this.perTimeQuantity = perTimeQuantity; }
-    public Long getAgentAccountId() { return agentAccountId; }
-    public void setAgentAccountId(Long agentAccountId) { this.agentAccountId = agentAccountId; }
 }