dsh-file-pane

A VS Code/Codex-style file pane for the DeepSeek Harness (DSH) right sidebar: the tree stays on the right while files open on the left, with preview/pin tabs, a right-click terminal, and Copy to Chat.

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Screenshots

4-pane layout. The original right pane is split into two: a viewer on the left and the Workspace file tree on the right. Three panes become four, and code and files stay side by side.

Copy to Chat. Select code in the preview and right-click. The @file #Lx-Ly reference and the selected code are inserted into the composer, without sending.

Features

• File pane on the left — a file opened from the Workspace files tree lands in a pane to the left of the tree, so the tree stays visible on the right at a 70/30 split. If DSH cannot split or move the tab, it falls back to the stock behavior.
• Preview tabs, VS Code-style — a single click opens or replaces the one preview tab; a double click on a file (or on the tab) pins it. Preview tabs render in italics, and pinning is per session.
• Open Terminal — right-click a file (it opens in the file's folder), a folder, or empty space in the tree to open a terminal there. The terminal opens as a sibling tab in the file pane, not over the tree.
• Copy / Copy to Chat — select text in the file preview and right-click. Copy keeps the native copy; Copy to Chat inserts a @file #Lx-Ly reference plus the selected code as a fenced block into the composer, without sending it.

Example payload:

@src/app.ts #L12-L14
```ts
export const b = 2
```

Install

Tested with DSH 0.2.1-rc.5.

dsh plugin --profile desktop add github:sinvacn/dsh-file-pane

Or just ask the agent in chat:

Install the dsh-file-pane plugin: dsh plugin --profile desktop add github:sinvacn/dsh-file-pane

The agent runs the command for you (it needs shell access; approve the command if asked). Either way, dsh-file-pane is added to your profile and the sidebar row is registered automatically. If the plugin is off, enable it in Settings → Plugins.

Refresh the page once; restart the desktop app if the sidebar does not update.

Configuration

The default share for a new split is 0.7 (file/terminal pane on the left). Change it from the page console:

localStorage.setItem('dsh.file-pane.share', '0.7')

Values are clamped to 0.2–0.8. Existing splits keep their real ratio; drag a divider to adjust one.

Uninstall

Remove dsh-file-pane in Settings → Plugins, or run:

dsh plugin --profile desktop remove dsh-file-pane

Then refresh the page.

Limitations

• The right sidebar's total width cap is unchanged; existing splits keep their real ratio.
• If you keep the tree on the left yourself, files and terminals open in the right-hand sibling pane instead of swapping panes.
• Line ranges come from code and plain-text previews; Markdown/PDF previews insert the file reference and selected text without numbers.
• Copy to Chat only inserts into the composer; it never sends. Without a mounted composer, the payload is copied to the clipboard instead.
• The terminal changes into the target directory after it starts, so the cd … command stays in shell history and scrollback.

License

MIT