DSH Web Panel

Embed the DeepSeek Harness (dsh) web GUI inside VS Code. Attaches to — or automatically starts — the local dsh web server and renders the full GUI in an iframe: sessions, terminal, plan approval, slash commands, todo, token/cache stats — everything, unchanged.

Unofficial community extension. Not affiliated with DeepSeek.

• Sidebar view: DSH activity-bar icon → "DSH Panel".
• Editor-tab panel (recommended, wider): Command Palette → DSH: Open Panel; opens automatically on startup by default (dshWeb.autoOpen).
• Status bar indicator (✓ running / ⎌ attached / ⟳ starting / ⛔ error); click to open the panel.
• Panel memory: the DSH tab is restored with your window layout across restarts.
• Workspace follow: a self-started server restarts with the new cwd when the first workspace folder changes (dsh's workspace root = server cwd).
• No extra windows: the extension spawns dsh hidden (windowsHide); nothing pops up.
• Self-healing: if an attached instance dies (e.g. its desktop window was closed), it is detected within ~15s and a hidden instance takes over; a crashed self-started instance restarts automatically.

Install

From a released .vsix:

code --install-extension dsh-web-panel-0.2.1.vsix

Or build it yourself:

cd dsh-webview
npx @vscode/vsce package
code --install-extension dsh-webview-0.2.1.vsix

Zero-config launch

On startup the extension probes dshWeb.port (default 3080) and attaches if a real dsh instance responds (page carries the __DSH_BOOT__ manifest). Otherwise it starts one, trying each strategy in order (120s each):

1. dshWeb.command (explicit override),
2. dshWeb.checkout (a deepseek-harness checkout, if set and present),
3. dsh on PATH (official npm install: npm i -g @deepseek-ai/dsh),
4. npx --yes @deepseek-ai/dsh (downloads the CLI on demand — zero setup).

The server runs with cwd = the first workspace folder, so each project gets its own dsh workspace. Requirements: VS Code ≥ 1.85 and Node.js (both already required by the official dsh setup). Configure your DeepSeek API key in the GUI as usual.

Settings

Setting	Default	Meaning
dshWeb.port	3080	Port to attach to or start on
dshWeb.attachExisting	true	Reuse a running instance instead of starting a new one
dshWeb.spawnIfMissing	true	Start a server when none is running
dshWeb.checkout	"" (auto)	Optional checkout path (launches apps/cli/lib/bin.js)
dshWeb.command	""	Full command override, e.g. pnpm dsh (runs via shell in the workspace)
dshWeb.extraArgs	[]	Extra arguments appended to the launch, e.g. --trusted-host
dshWeb.autoOpen	true	Open the DSH panel automatically on startup
dshWeb.followWorkspace	true	Restart self-started server when the first folder changes
dshWeb.stopOnExit	true	Stop a self-started server when VS Code exits (process-tree kill)

Troubleshooting: Output → DSH Server.

Known boundaries

• The panel shows dsh's own web UI — it is not a Claude Code panel clone.
• "DSH: Restart Server" only restarts servers started by this extension; restart an external instance yourself, then run "DSH: Reload Panel".
• On exit, self-started servers are killed hard (taskkill /T on Windows); dsh session logs survive crashes, so this is generally harmless.

Development

# headless checks (mock the vscode API; attach + spawn + real-launch paths)
node test/mock-verify.js
node test/spawn-verify.js      # needs pipe-capable shell (no sandbox)
node test/real-launch-verify.js # spawns the real dsh from the checkout

License

MIT — see LICENSE.