Ponytail for DeepSeek Harness

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Ponytail is "lazy senior dev mode": the smallest change that fully solves the task, and a reply a busy human understands in one read. This bundle ports it to DeepSeek Harness as one pluggable unit — switch it on and it applies to every session. There is no slash command to remember.

What you get (bundle on = on)

• Always-on rules. A prompt section (ponytail:rules, order 9500) carries PONYTAIL MODE ACTIVE — level: <level> plus the canonical rules, re-read at every step assembly, for every session in this profile, subagents included.
• Six skills. The session catalog tells the model to load a skill when a request matches, so "review this change" reaches ponytail-review without any gesture. The five task skills can also be typed as /ponytail-review, /ponytail-audit, /ponytail-debt, /ponytail-gain, /ponytail-help; the core ponytail skill stays model-only.
• A configured level. defaultMode in the row config: off, lite, full (default) or ultra. No command and no state file: turn the bundle on and the configured level is what runs.
• Deactivation phrases. A whole message that is exactly "stop ponytail" or "normal mode" ends the rules for this process run, as upstream does; a bundle toggle or restart restores the configured level.

Levels

defaultMode	Behavior
off	No rules injected; the six skills still load on demand.
lite	Build what was asked; name the smaller option in one line.
full	The rules above. Default.
ultra	Also question the request before building.

Install

Pick any route; all of them install the same bundle (a package with a dsh.bundle.patch).

Route	Spec to give Plugins → Add plugin (or dsh plugin add)
GitHub	github:Vincent-chk/dsh-ponytail
Git URL	https://github.com/Vincent-chk/dsh-ponytail
Tarball	npm pack in a checkout, then the absolute path to the .tgz
Local checkout	the absolute path of this directory

From the plugin market: add this index source in Plugins → Discover → Add index source and install from the card:

https://vincent-chk.github.io/dsh-ponytail/market/index.json

npm publish is prepared in PUBLISHING.md; the package is not on npm yet.

Not the npm package named dsh-ponytail. This bundle is @dsh-ext/dsh-ponytail and installs from this repository or the index above. An unrelated npm package uses the bare name dsh-ponytail and targets an old DSH generation; installing it fails with a compatibility error (see Troubleshooting).

Toggling the bundle off in the Plugins page removes the rules and all six skills; toggling it back on restores them.

Change the level

Add an override row to the profile's cordis.patch.yml — the loader replaces the row's complete config, so restate the level you want:

- id: ponytail
  name: '@dsh-ext/dsh-ponytail'
  config:
    defaultMode: lite   # off | lite | full | ultra

HMR recomposes on the patch change; if it does not, toggle the bundle off and on in the Plugins page. PONYTAIL_DEFAULT_MODE overrides the row config. Resolution order: PONYTAIL_DEFAULT_MODE > row defaultMode > full.

Not ported, on purpose

• The Claude Code statusline/band and the local HTML board: DeepSeek Harness already shows token and cache usage, and the band is a Claude-private API.
• The /ponytail level command and its state file: the bundle switch is the control, and the level is deployment configuration. The upstream sentence in the rules was adapted to say so.
• Per-project levels: the level is process-wide. shortcut: the upgrade path is registering the section per agent.ctx keyed by session cwd.
• /ponytail default <mode>: the default is row config, not a command.

Verify

npm test runs two checks: test/selfcheck.mjs asserts the level grammar, frontmatter parsing, level filtering, deactivation matching, and that all six bundled assets are complete; test/bundle-check.mjs runs the real apply() against a fake Cordis context and asserts the injected rules follow the configured level, no command is registered, no state file is written, the deactivation listener empties the section, and the skill provider serves all six skills with registry-valid definitions.

On macOS volumes that store extended attributes as AppleDouble files (exFAT, some network mounts), a write beside locale/*.json can leave a ._*.json companion that the Harness locale reader rejects as a language file; npm run clean:macos removes them, and the self-check fails until it does.

Troubleshooting

dsh-ponytail@0.2.0 is incompatible with DSH 0.2.1-rc.2 (requires @deepseek-ai/dsh-agent, dsh-commands, dsh-llm, dsh-settings, dsh-skill, dsh-system-prompt at ^0.1.0-rc.6)

That message comes from the unrelated npm package dsh-ponytail@0.2.0 (published 2026-08-15, built for DSH 0.1.0-rc.6), not from this bundle. Uninstall that package in Plugins, then install this repository instead: github:Vincent-chk/dsh-ponytail, the Git URL, or the market index above. This bundle declares no @deepseek-ai/dsh-* peer requirements and its engines.dsh is >=0.2.1-rc.2 <0.3.0.

License

MIT; see UPSTREAM.md for provenance. Skill bodies are upstream content (ponytail and ponytail-help adapted for this host).