dsh-workbench

A VSCode-style workbench for the DeepSeek Harness (dsh) web GUI: a resizable drawer with a workspace file tree, a Monaco editor, global search & replace, Git source control, and a persistent terminal — an in-browser VSCode-like experience that never leaves the chat view.

Features

• Drawer, not a tab — opens over the conversation from the session-header button; press Esc or click the backdrop to close. No session switch, no context loss.
• Files explorer — workspace tree rooted at the current session's cwd (root folder auto-expands), vscode-icons file/folder icons, type badges fallback, Ctrl+P quick-open, disk-change polling with reload hint.
• Monaco editor — multi-file tabs, dirty-dot indicator, Ctrl+S save, themes, markdown preview (.md opens straight into preview), syntax highlighting for ~90 languages.
• Global search & replace — VSCode-style find/replace across the workspace: regex, whole word, case sensitivity, context lines, files to include/exclude, per-file and replace-all with confirmation (Ctrl+Shift+F / Ctrl+Shift+H).
• Git source control — VSCode SCM layout: branch switcher with sync counts, staged/changes groups with count badges, status letters, stage/unstage/discard, commit / commit & push / commit & sync, pull/push/sync, history with per-commit changed files, and right-side Monaco diff views (HEAD↔index, index↔worktree, commit↔parent) (Ctrl+Shift+G).
• Terminal — real shell via node-pty (PowerShell Core by default), tabs and side-by-side splits, font picker from installed fonts, survives drawer hide/show and session switches (`Ctrl+``).
• C# LSP — hover, go-to-definition and references via a lightweight LSP bridge (csharp-ls).
• Chat file links open in the drawer — clicking a path link in a read/write/edit tool card opens the file in the drawer instead of the OS default app.
• State persists — open tabs, active file, tree expansion and drawer width survive drawer close/reopen (isolated per workspace).

Requirements

• DeepSeek Harness web profile (dsh web), any recent version
• Runtime network access to CDNs: Monaco (cdn.jsdelivr.net → unpkg.com → registry.npmmirror.com, override with window.__DSH_MONACO_BASE__), xterm.js, and vscode-icons (cdn.jsdelivr.net)
• node-pty builds on install (prebuilt binaries for common platforms)
• Optional language servers for hover / go-to-definition / find-references (everything else works without them):

LSP dependencies

Both servers are optional. The status dot in the drawer's status bar shows idle / connecting / analyzing / ready / error for the combined LSP state; install the server for a language and restart dsh to enable it.

C# — csharp-ls (resolved from ~/.dotnet/tools first, then PATH):

# requires the .NET SDK (https://dotnet.microsoft.com/download)
dotnet tool install --global csharp-ls
# verify:
csharp-ls --version

TypeScript / JavaScript — typescript-language-server (resolved from the profile's node_modules first, then PATH). The host also pins TSSERVER_PATH to a local or global typescript tree automatically:

# requires typescript 5.x — native TypeScript 7 ships no tsserver.js and
# will not work as the language server backend
npm install -g typescript-language-server "typescript@5"
# verify (Windows: use the .cmd entry, not the extensionless shim):
where typescript-language-server

Windows note: the host picks the first real binary from where output (.cmd/.exe), so the extensionless npm shim is skipped automatically. After a global install, restart dsh so its PATH picks the new binary up.

Install

The package is a dual-face dsh plugin: a host half (HTTP routes for files, git, terminal and LSP bridges) plus a browser half (the workbench UI).

# 1. install into the web profile's workspace
cd ~/.dsh/profiles/web          # or %USERPROFILE%\.dsh\profiles\web on Windows
pnpm add @kefengwei/dsh-workbench

# 2. register the loader entry in the profile patch layer
#    append to ~/.dsh/profiles/web/cordis.patch.yml:
#
#    - insert:
#        - id: workbench
#          name: '@kefengwei/dsh-workbench'
#          inject: [webServer]

# 3. restart dsh web, then Ctrl+Shift+R the page

The session header gains a sidebar icon that toggles the drawer.

Development

npm install
npm run build      # builds lib/client.js (browser half) + copies lib/index.js (host half)
npm run watch      # rebuild on change

Layout of a published package:

lib/index.js    host half    — /monaco-fs, /monaco-git, /monaco-lsp, /monaco-term routes
lib/client.js   browser half — the workbench UI (module-table factory bundle)
src/client.js   source of the browser half
src/index.js    source of the host half
src/lsp.js      C# LSP client (host-side stdio bridge + browser-side providers)

Host routes

All filesystem/git paths are confined to the session workspace root; paths escaping the root are rejected with 403.

| Area | Route | Purpose | | --- | --- | --- | | fs | /monaco-fs/root, /list, /read, /write, /search, /grep | workspace listing, read/write, quick-open, global search | | git | /monaco-git/status, /diff, /stage, /unstage, /commit, /discard, /stage-all, /unstage-all, /discard-all, /pull, /push, /sync, /commit-push, /commit-sync, /branches, /checkout, /branch-create, /log, /log-files, /commit-diff, /show-file | VSCode-style source control | | lsp | /monaco-lsp (WebSocket upgrade) | csharp-ls stdio bridge | | term | /monaco-term (WebSocket upgrade) | node-pty bridge |

How the browser half registers

• conversation.session.header.utilities — the drawer trigger button (right of "Session log")
• shell.overlay — the drawer surface
• A capture-phase click interceptor routes chat _fileLink buttons into the drawer

Uninstall

# remove the entry from ~/.dsh/profiles/web/cordis.patch.yml
cd ~/.dsh/profiles/web && pnpm remove @kefengwei/dsh-workbench
# restart dsh web

License

MIT