dsh-worktree

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Codex-style permanent git worktrees for DeepSeek Harness — a Cordis plugin that gives a DSH profile the same durable-worktree workflow as codex worktree create --permanent.

A permanent worktree is a real git worktree add --detach checkout that survives sessions and restarts. You (or the agent) create it once, and any later session can be opened inside it to keep working where the previous one left off — without ever touching your main working tree.

What you get

On top of the CLI parity, the model itself gets the tools, so it can fork its own permanent workspace mid-task — create a worktree at a specific commit, work there with the normal file tools, and clean up afterwards.

How it works

• Worktrees live at <repo-root>/.dsh-worktrees/<name> — the same hidden directory pattern as Codex's .codex/worktrees/ — so they stay inside the repository (and, when the session workspace is the repo root, inside the session's workspace-write sandbox).
• Every worktree is recorded in a per-repository manifest, <repo-root>/.dsh-worktrees/manifest.json (name, path, base commit, created-at, creator session). The manifest is what makes worktrees permanent: they survive DSH restarts, are listed by the tools/command, and are recognized when a new session is opened inside one.
• Creating a worktree also registers it in ctx.workspaceRegistry, so it appears in the DSH workspace list — the native way to "open" it later.
• Removing a worktree runs git worktree remove (with --force when requested), deletes the manifest entry, and unregisters the workspace. It refuses to remove the worktree the current session is running inside.

Requirements

• git ≥ 2.31 (uses git rev-parse --path-format=absolute --git-common-dir).
• A DSH profile with the tools, commands, and subprocess services (the web profile has all three via dsh-base).

Installation

# 1. make the plugin available to your profile (installs from npm)
dsh plugin --profile web add dsh-worktree

# 2. activate it in the profile's patch layer
#    add to ~/.dsh/profiles/web/cordis.patch.yml:
#
#    - insert:
#        - id: worktree
#          name: 'dsh-worktree'

# 3. restart the profile (e.g. restart the `dsh web` process)

Installing from source (development, or to match a different harness version):

git clone https://github.com/FlashingChen/dsh-worktree.git
cd dsh-worktree
npm install            # self-contained deps, pinned to the harness versions
dsh plugin --profile web add "$PWD"
# ... then the patch row and restart as above

The plugin's dependencies are pinned to the harness versions it was built against (@deepseek-ai/* 0.1.0-rc.6). If your DSH installation is a different version, install from source and run npm install <matching versions> in the plugin directory (or adjust package.json) so the plugin loads against your harness.

Configuration (all optional):

- insert:
    - id: worktree
      name: 'dsh-worktree'
      config:
        dirName: .dsh-worktrees   # directory inside each repo root (default)

Usage

Agent tools

• worktree_create {name, baseCommit?} — create a permanent detached worktree of the repository containing the current session (default base: current HEAD). Returns the worktree path, repo root, and base commit.
• worktree_list — list registered worktrees with live git state (exists, HEAD, branch).
• worktree_remove {name, force?} — remove a registered worktree (--force also discards uncommitted changes). Refuses to remove the worktree the current session is working inside.

Chat command

/worktree                          # list (same as /worktree list)
/worktree list
/worktree create <name> [<base-commit>]
/worktree open <name>              # print path/state + register as workspace
/worktree remove <name>            # (close/delete accepted as aliases)

Session context

When a session's workspace is inside a registered permanent worktree, the agent is told once: which worktree, of which repo, at which base commit, plus the management commands.

Sandbox note

The git operations run through DSH's own ctx.subprocess seam (not the agent bash tool), like other harness-managed processes. With the default workspace-write permission mode, worktree files are writable by the agent when the worktree lives under the session's workspace root — which is the case whenever the session was started at the repository root (the normal setup). If a session starts from a subdirectory of the repo, .dsh-worktrees lands outside that session's workspace; open a new session with the worktree as its workspace to work inside it.

Development

• node test/smoke.js — standalone end-to-end test of the git logic against a scratch repository (no DSH boot needed).
• Activation check: boot a minimal cordis tree (system-prompt, tools, commands, subprocess, dsh-worktree) from the profile's node_modules and assert registration + a real create/list/remove round trip.

Layout

lib/manager.js   WorktreeManager: repo discovery, git worktree lifecycle,
                 per-repo manifest (pure logic over ctx.subprocess)
lib/index.js     Cordis plugin: Config, tools, /worktree command,
                 one-shot session context note, ctx.worktree service
test/smoke.js    standalone smoke test

License

MIT — see LICENSE.