dsh-btw

dsh（DeepSeek Harness）全局命令插件：/btw 进行一次不计入会话记忆的问答，等价于 Claude Code 的 /btw 指令。

A global-command plugin for DeepSeek Harness (dsh): /btw performs a one-off Q&A that is not recorded into session memory — the Claude Code /btw equivalent.

兼容性 / Compatibility

本插件只保证适用 DeepSeek Harness 官方仓库的 v0.1.1 基线版本（tag dsh-v0.1.1；本地开发与验证基线为 dsh-v0.1.1-rc.2）。不保证在官方仓库更高版本（v0.1.2 及以后）上正常工作，升级 harness 前请先在本机验证。

This plugin is only guaranteed to work on the v0.1.1 baseline of the official DeepSeek Harness repository (tag dsh-v0.1.1; the local development and validation baseline is dsh-v0.1.1-rc.2). It is not guaranteed to work on later official versions (v0.1.2 and beyond) — verify on your own machine before upgrading the harness.

插件只依赖宿主注入的 ctx.commands 与 ctx.llm 服务；对 @deepseek-ai/* 包全部为类型导入，构建时擦除、零运行时依赖，因此不会随 harness 产生依赖版本漂移，但仍以 v0.1.1 基线的服务语义为准。

The plugin depends only on the host-injected ctx.commands and ctx.llm services; every @deepseek-ai/* import is type-only and erased at build time, so there is zero runtime dependency and no drift with the harness — the v0.1.1 baseline service semantics are authoritative.

特性 / Features

• 全局生效：在普通 ctx 上通过 ctx.commands.register() 注册（plain-context registration is global），profile 下任何 agent preset / 模式 / 会话都可用，无需在每个 preset 中配置。 Global: registered on the plain ctx via ctx.commands.register() (plain-context registration is global), so every agent preset / mode / session under the profile sees the command with no per-preset configuration.
• detached 即时清空：触发即清空 composer、立即释放输入能力；主代理繁忙时也可随时触发，不需要排队（/ 行走命令管线，不进入消息队列）。 Detached, immediate clearing: triggering clears the composer and frees input instantly; it can fire even while the main agent is busy and does not queue (it walks the command pipeline, not the message queue).
• 沿用当前模型：优先复用当前会话最近一次请求的 provider/model 路由，其次才是 agent 自身的 options.provider / options.model；两者都没有时返回明确错误。 Reuses the current model: prefers the provider/model route of the session's latest request, then falls back to the agent's own options.provider / options.model; errors out clearly when neither exists.
• 只读上下文拼接：自动携带最近最多 40 条用户/助手消息（合计上限 32000 字符）作为只读背景，使提问可以引用会话内容；背景只是字符串快照，不写回会话、不进入 session log，也不影响后续模型的缓存键。 Read-only context stitching: automatically carries up to the most recent 40 user/assistant messages (32,000 characters total) as read-only background, so the question can reference session content; the background is a plain string snapshot — not written back to the session, not entered into the session log, and not affecting later cache keys.
• 零运行时依赖：lib/index.js 为 tsc 类型擦除后的纯 ESM，不 import 任何运行时包。 Zero runtime dependencies: lib/index.js is pure ESM after type erasure; no runtime package is imported.
• 可取消：把 UI 请求的 AbortSignal 转发给底层 stream。 Cancellable: forwards the UI request's AbortSignal to the underlying stream.

用法 / Usage

/btw 这个函数是做什么的？             # What does this function do?
/btw 帮我算一下 0x2F & 0x0F 等于几      # What is 0x2F & 0x0F?

命令在输入框触发后立即清空输入并转入后台执行：命令声明为 detached，composer 在触发的同一瞬间结算本次提交（不再等待模型答完才清空输入框），随后宿主调用 ctx.llm.stream() 发起一次独立的一次性模型请求，答案以持久化的命令节点渲染在会话流中。整个过程不写入任何会话消息（不产生 user 消息、assistant 消息或可被后续模型请求读取的会话事件），所以这次问答不会进入会话历史、不影响后续轮次的记忆。

Once triggered, the command immediately clears the input and runs in the background: it declares detached, so the composer settles the submission at the instant of the trigger (it does not wait for the model answer to clear the input box); the host then makes one independent one-shot model request through ctx.llm.stream(), and the answer renders as a durable command node in the conversation stream. The whole run writes no session messages (no user message, no assistant message, and no session event a later model request could read), so the Q&A never enters session history and does not affect the memory of later turns.

设计说明 / Design notes

• detached 由命令定义声明（CommandDefinition.detached），描述符经 command.list 线传给 composer：claim 的 submit 立即返回成功并在后台执行，主机仍照常记录 command/run / command/done 生命周期，结果节点照常渲染。 detached is declared by the command definition (CommandDefinition.detached); the descriptor reaches the composer over the command.list line: the claim's submit returns success immediately and runs in the background, while the host still records the command/run / command/done lifecycle and renders the result node as usual.
• command/run / command/done 为仅日志记录（log-only），永远不会进入模型请求，因此命令输入与结果对模型不可见，也即"不计入后续记忆"。 command/run / command/done are log-only records that never reach a model request, so the command's input and result stay invisible to the model — i.e. "not recorded into later memory".
• 一次性调用使用独立的精简 system prompt，不携带会话 persona 与工具；与 DSH 压缩后端直接调用 ctx.llm.stream() 的模式一致。 The one-off call uses an independent, minimal system prompt without the session persona or tools — the same pattern DSH's compaction backend uses to call ctx.llm.stream() directly.
• 只读上下文复制会按请求放大一次性调用的 token 用量（上限约 32000 字符）；因为零会话写入，会话自身的派生上下文与 provider 缓存前缀保持不变。 The read-only context copy scales the one-off call's token usage with the request (capped at ~32,000 characters); because there is zero session writes, the session's own derived context and the provider cache prefix stay unchanged.
• max-tokens 截断与失败终态（error / aborted）会转换为命令错误返回。 max-tokens truncation and failing terminal states (error / aborted) are returned as command errors.

安装 / Install

前置：已安装 dsh（dsh CLI）并存在目标 profile（默认 GUI profile 名为 web）。

Prerequisites: a dsh installation (the dsh CLI) and a target profile (the default GUI profile is named web).

从 GitHub / From GitHub

dsh plugin --profile web add github:clclyzybzjsq/dsh-btw

Git 安装取的是源码而非构建产物，因此 pnpm 会运行包的 prepare 脚本以生成 lib/。pnpm ≥ 10 默认拒绝运行 git 依赖的 prepare，首次 add 会失败并打印确切的包 key；把该 key 复制进 profile 的 pnpm-workspace.yaml：

A git install fetches sources, not built artifacts, so pnpm runs the package's prepare script to build lib/. pnpm ≥ 10 refuses to run a git dependency's prepare until explicitly allowed — the first add fails and dsh prints the exact package key; copy it into the profile's pnpm-workspace.yaml:

allowBuilds:
  dsh-btw: true

然后重新执行 add。该放行意味着允许在安装时执行此包代码——只放行你信任的包，并建议固定 commit（github:clclyzybzjsq/dsh-btw#<sha>）。完成后再（重）启动一次 dsh web，组合生效。

Then re-run the add. That allowance is permission to execute the package's code at install time — only allow packages whose source you trust, and pin a commit (github:clclyzybzjsq/dsh-btw#<sha>). (Re)start your dsh web once so the composition picks up the new row.

从 tarball（无需构建放行）/ From a tarball (no build allowance needed)

pnpm pack                      # 生成 dsh-btw-0.1.0.tgz / produces dsh-btw-0.1.0.tgz
dsh plugin --profile web add ./dsh-btw-0.1.0.tgz

本地目录 / From a local directory

dsh plugin --profile web add /path/to/dsh-btw

卸载 / Uninstall

dsh plugin --profile web remove dsh-btw

构建 / Build

pnpm install    # 安装 tsdown 并运行 prepare，生成 lib/ / installs tsdown and runs prepare, emitting lib/

prepare 脚本是自包含构建（src/ + 专属 tsdown 配置）：无 monorepo 上下文、无 project references、无类型检查，产物为 lib/index.js（ESM node half）。

The prepare script is self-contained (builds from src/ with a dedicated tsdown config): no monorepo context, no project references, no type checking. Output: lib/index.js (ESM node half).

分发 / Distribution

这是标准的 dsh bundle：package.json 声明 dsh.bundle（patch cordis.patch.yml 向 profile 组合插入 command-btw 行）。本仓库地址 github:clclyzybzjsq/dsh-btw，用户按上面的 GitHub 命令安装；也可以 pnpm pack 分发 tarball。

This is a standard dsh bundle: package.json declares dsh.bundle (patch cordis.patch.yml inserts the command-btw row into the profile composition). Repository: github:clclyzybzjsq/dsh-btw — users install with the GitHub command above, or you distribute tarballs with pnpm pack.

License

MIT © 2026 iseri_tomori