dsh-open

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> A standalone DeepSeek Harness Web plugin that adds a compact split Open action to each conversation header, listing dock panels, the platform file manager, and your editors.

 

!Open menu in a Harness session header

What it does

• The main icon opens the last selected available target.
• The chevron lists registered dock panels, the platform file manager, and editors selected by $VISUAL and $EDITOR.
• With one available target, the control collapses to one button.
• Internal tools use ctx.dock.open(panelId) and appear only while their panel is registered.
• Native actions are resolved on the Host. The browser sends only a session id and a closed action id; it cannot choose a filesystem path or executable.
• Same-origin checks, bounded request bodies, environment scrubbing, and a launch timeout protect native invocation.

Install

Requires dsh-dock, the dsh CLI (Node.js 22.19+ or 24), and pnpm 10+.

From npm

dsh plugin --profile web add @mattismegevand/dsh-open

From GitHub

dsh plugin --profile web add github:mattismegevand/dsh-open

Git installs fetch sources, so pnpm runs the package's prepare build on first add. pnpm ≥10 refuses that until you allow it: copy the exact package key pnpm printed into the profile's pnpm-workspace.yaml allowBuilds entry, then re-run the same add.

Develop locally

git clone https://github.com/mattismegevand/dsh-open.git
cd dsh-open
corepack pnpm install
corepack pnpm check:all
dsh plugin --profile web add .

The shipped patch inserts the Host row automatically.

Configuration

- id: open
  name: '@mattismegevand/dsh-open'
  config:
    preferredAction: visual
    terminalPanelId: terminal
    maxRequestBytes: 8192
    launchTimeoutMs: 10000

The configured action is the initial preference for a fresh browser profile. Menu selection updates a browser-local preference. $VISUAL and $EDITOR are resolved on PATH and deduplicated. The file-manager action uses Finder on macOS, File Explorer on Windows, and the system opener on Linux.

Related plugins

• dsh-dock — the docking system that registers the internal panel targets.
• dsh-terminal — VS Code-style Ghostty terminal panel.
• dsh-git — session-scoped working-tree Review panel.

Model experience

Workspace Open UI

#### What the model sees

Nothing. The plugin launches UI panels or native applications from a human-operated browser control and registers no prompt, tool schema, or model-visible message.

#### Token effect

Zero tokens are added to model requests or responses.

#### KV Cache effect

None. Selecting or launching an Open target does not alter the model input prefix.

Known limitations

• Native capability discovery runs when the client store loads and is not refreshed while that store remains mounted.
• Native launch failures are surfaced as concise errors; platform-specific recovery actions such as revealing Finder permission settings are not implemented.
• Internal targets depend on live dock registrations, and native targets remain local-host only.

License

MIT