refactor(websocket): 重构 WebSocket 相关代码

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2025-08-14 b224c081c0e21dad51f0f628d5c1fbfd4245cddd

 src/main/java/cc/mrbird/febs/mall/entity/PlatformBanner.java

@@ -23,6 +23,10 @@
     */
    private String imageUrl;
    /**
     * 背景图片链接
     */
    private String imageBackUrl;
    /**
     * 是否可跳转 1-是2-否
     */
    private String isJump;