Relethe/dsh-brief-session-title

English | 中文

A DeepSeek Harness (DSH) session-title plugin that condenses a full sentence into a single word for easier recall.

Why this plugin

DSH generates session titles with the official session-title-first-prompt-llm plugin, which often outputs a complete sentence — a verbatim echo like "Explain what JavaScript closures are" ends up in the sidebar, long and hard to scan.

The root cause is the official prompt: its only length constraint is "Aim for about 5 words" — "aim for" is a soft target that models routinely overshoot, and it asks for "concise" without showing what concise means. The goal is not specific enough, and that is what makes titles wordy.

This plugin keeps all official logic untouched and changes exactly one thing: the system prompt — explicit rules plus correct/incorrect examples that turn "concise" into an executable standard.

Examples

Session content (original)	This plugin's title
解释一下JavaScript闭包到底是什么	JS闭包浅说
用英语表达中国近代半文言文文法	半文言文法表达
中式微恐2.5D沙盒生存游戏系统PRD	游戏PRD
Fixing Memory Leak in Node	Node memory leak
Database Schema Design Review	Schema review

Core idea: prompt optimization

The new prompt gives the model four hard rules:

1. PLAIN ENGLISH for English output — plain and direct;
2. literary-vernacular hybrid for Chinese output — a compact classical-modern blend (e.g. "浅说", "文法表达");
3. Avoid verbs in the output — verbs are the skeleton of a sentence; remove them and the sentence collapses into a phrase;
4. Shrink to under 5 words, like a professional poet — shorter is better.

Six correct/incorrect example pairs anchor the target style, so the model imitates the pattern instead of guessing what "concise" means.

Features

• No copied strategy code: it registers a first-prompt provider and calls the official generateSessionTitleWithLlm() from @deepseek-ai/dsh-session-title-llm, so framing, byte/token caps, the timeout code, tool-call rejection, title normalization, and the session/title-llm-request log event all stay official; the only difference is the system prompt — both in the request sent to the model and in the logged event;
• Exactly one provider: the bundle patch disables the official plugin, and the title service rejects a second registration, so two generators can never compete;
• Fail-safe: on model error, timeout, or empty output, it falls back to the official deterministic fallback title;
• Configurable: input byte cap, output token cap, and timeout are all tunable.

Compatibility

Requires DSH 0.2.x (@deepseek-ai/dsh-session-title* >= 0.2.0-0). Because no strategy code is copied, official upgrades are picked up automatically; if the shared function signature changes, the plugin fails loudly instead of writing a malformed log event.

Installation

This plugin is a dsh bundle — install it directly from GitHub, no manual config editing:

dsh plugin --profile web add github:Relethe/dsh-brief-session-title

If the package is published to npm, the same command works with the package name:

dsh plugin --profile web add dsh-brief-session-title

For a local checkout (relative paths resolve against your invoking directory):

dsh plugin --profile web add ./dsh-brief-session-title

dsh plugin forwards its arguments to pnpm and then reconciles: because this package declares dsh.bundle, it joins the profile's bundle layer automatically, and the bundle's own cordis.patch.yml applies (disable the official title plugin + mount this one).

Restart DSH — new session titles take effect from then on.

Configuration

Key	Default	Meaning
maxInputBytes	4096	UTF-8 byte cap for the framed JSON input; oversized input fails instead of truncating
maxOutputTokens	64	Output-token cap for the title request
timeoutMs	60000	Per-request timeout in milliseconds
provider / model	omitted	Supply both to use a dedicated route; omit to reuse the session's main-request route

targetWords / targetCjkCharacters are intentionally not exposed: the custom prompt fixes its own length rules, so those official knobs have nothing to configure here.

Notes

• New titles only: existing sessions keep their stored titles;
• Manual renames pin: a user-renamed title is never overwritten by automatic generation (official DSH behavior);
• To revert: dsh plugin --profile web remove dsh-brief-session-title — the official title plugin resumes automatically.

License

MIT