Luoji-Yuli / dsh-turn-rail

dsh-turn-rail

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v0.3 — A right-side session turn navigation rail for DeepSeek Harness Web, replicating the DeepSeek official website chat page style:

• Collapsed: a 34px rail at the right edge; one small gray marker per user turn, the active turn is blue and stretched. The frosted rounded background is opt-in and off by default — see the toggle section below.
• Hover / keyboard focus: expands into a 240px floating panel with one row per user message.
• scrollspy keeps the active marker in sync while scrolling.
• Opening a session auto-pages older history, so every historical turn appears in the rail without manual scrolling.

Screenshot

One-line install

Prerequisite: DeepSeek Harness Web is installed and running (npx @deepseek-ai/dsh web or pnpm dsh web), and both dsh and pnpm are on PATH.

dsh plugin --profile web add github:Luoji-Yuli/dsh-turn-rail

A successful install prints + @deepseek-ai/dsh-turn-rail ....

If dsh web is running, restart it and refresh the page.

Local directory install (development):

dsh plugin --profile web add link:./dsh-turn-rail

Start

dsh web

Open http://127.0.0.1:3080 and hard-refresh with Ctrl + F5. Open any session with at least 2 user messages; the rail appears at the right edge of the page.

Frosted background toggle

The collapsed rounded frosted background is off by default.

1. Open DeepSeek Harness Web and go to Settings → General.
2. Find the row Turn rail frosted background.
3. Toggle it on: the frosted rounded background shows in both light and dark themes.
4. Toggle it off: no background in either theme (markers only).

Uninstall

dsh plugin --profile web remove @deepseek-ai/dsh-turn-rail

Repository layout

dsh-turn-rail/
  package.json          # declares both dsh.bundle and dsh.client
  cordis.patch.yml      # inserts one plugin row into the web profile
  docs/
    screenshot.png      # UI screenshot
  lib/
    index.js            # host-side no-op plugin (so the loader can import it)
    client.js           # prebuilt browser bundle (works out of the box)
    types/              # TypeScript declarations
  src/                  # plugin source (browser component + host no-op)
  tests/                # component tests
  tsconfig.json         # TS config used when building inside the deepseek-harness monorepo
  tsdown.config.ts      # bundle config used when building inside the deepseek-harness monorepo

Building from source

This repo ships a prebuilt lib/client.js, so normal installs do not need a build step.

After editing files under src/, mirror them into the deepseek-harness monorepo at:

packages/client/ui-turn-rail/

Then run:

pnpm install
pnpm --filter @deepseek-ai/dsh-turn-rail run bundle

Commit the regenerated lib/client.js back to this repo.