rail 2
画卷式消息导航栏:右侧竖条 hover 展开画卷,scroll-spy 高亮居中跟随,编号+时间+完整预览,与 better-sidebar 双面板动画同步避让
dsh plugin add @max-null/dsh-chat-railCodex-style LEFT message navigation rail for DeepSeek Harness: a vertical column of short lines, one per message (user + assistant), with a linear lens hover effect, scroll-spy highlight, and click-to-jump.
dsh plugin add @hzpeng/dsh-lens-rail