refactor(client): 优化页面多处细节与样式兼容性

1. 调整全局滚动条样式仅适配Firefox浏览器，修复Chrome下表头错位问题
2. 替换站点logo为Ant Design风格图标并优化样式
3. 重构客户拜访列表操作栏：合并详情按钮到下拉菜单，缩小操作列宽度
4. 优化操作按钮文本与主键判断逻辑，使用key替代文本匹配

client/public/favicon.svg

@@ -1,4 +1,3 @@
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+<svg width="32" height="32" viewBox="64 64 896 896" xmlns="http://www.w3.org/2000/svg">
+<path fill="#1890ff" d="M848 359.3H627.7L825.8 109c4.1-5.3.4-13-6.3-13H436c-2.8 0-5.5 1.5-6.9 4L170 547.5c-3.1 5.3.7 12 6.9 12h174.4l-89.4 357.6c-1.9 7.8 7.5 13.3 13.3 7.7L853.5 373c5.2-4.9 1.7-13.7-5.5-13.7zM378.2 732.5l60.3-241H281.1l189.6-327.4h224.6L487 427.4h211L378.2 732.5z"/>
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