dsh-command-rail

Scrolling through a long DSH conversation to find one specific user prompt is a friction point most users feel after a dozen or so turns. dsh-command-rail adds a subtle column of short bars along the left edge of the session area, one per user command, spanning the full persisted history rather than just the last ~50 events currently rendered in the DOM. Hover a bar to see its ordinal position and a summary excerpt, even for commands that have not been loaded into the view; click it and the plugin pages older history via the official sessions history API, then scrolls and highlights the target line. Your current reading position stays highlighted in the brand color, and switching conversations automatically rebuilds the rail. When the command count grows large, bar heights compress down to 2 px and sampling kicks in beyond 400 entries, so the rail never overflows; if the history API is unavailable it gracefully falls back to DOM-scrape mode. The plugin touches only official service interfaces and stable CSS-module anchors, performs no internal patching, and exports its core logic for testing. If your DSH sessions regularly stretch into dozens or hundreds of turns, if you keep jumping back to a specific prompt, or if you simply prefer a Codex-style lateral timeline over infinite vertical scrolling, this rail turns blind scrolling into a glance-and-go navigation experience.