Codex History Rail

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为 DeepSeek Harness 对话左侧留白处加入 Codex 风格的回合时间轴，支持悬停预览、点击跳转与收藏。

A Codex-style turn rail for the DeepSeek Harness Web UI. It sits in the narrow gutter between the sidebar and the conversation and shows one short tick per turn.

Features

• Turn ticks — one short horizontal line per turn in the current session.
• Hover preview — the line grows and a card shows that turn's prompt and assistant response.
• Jump to turn — click a tick or the card's Jump here button; the transcript scrolls to that turn and pages history in when needed.
• Favorites — star a turn from the card. The top star opens a cross-session favorites panel; clicking a saved turn jumps to it, switching sessions when necessary.
• Theme aware — uses the host's --dsw-alias-* tokens and hides itself below 1080 px.

Favorites are stored in the browser's localStorage and are never uploaded.

Install

Install the bundle from the DSH plugin market, or link this directory into a DSH profile and enable @jaycou/codex-history-rail:

# from this package directory
dsh plugin add .

The package declares dsh.bundle.patch and a Web client half. It is a UI-only bundle: the Host half is intentionally empty.

How it works

• Registers a React component in the conversation.session.header.utilities slot and portals the rail into the conversation root's left edge.
• Reads the whole-session outline from the turnOutline projection and the loaded turns from useChat(snapshot => snapshot.navigation.items()).
• Jumps to unloaded turns with sessions.binding(sessionId).session.loadThrough(seq), then scrolls the matching [data-chat-anchor-key] row into view.
• Uses only --dsw-alias-* theme tokens and does not import DSH client packages.

Development

node --check client.js
node --check index.js

The client is a single window.__ModuleLoader__.load(...) factory; client.js is the whole UI. Locale metadata lives in locale/.