dsh-share

dsh-share is a DeepSeek Harness plugin that adds a Share button to the session header. One click freezes the current conversation into a self-contained, read-only HTML page and prints a LAN URL — e.g. http://192.168.1.20:3081/s/<token> — that any device on the same network can open in a browser.

The main harness keeps listening on 127.0.0.1 (and so never exposes the agent's command execution). Sharing is served by a separate, read-only HTTP server that only ever returns a pre-rendered snapshot page for a valid token.

Features

• 🔗 One-click share — a Share button in the session header (beside the official "Session log" action).
• 🔒 Read-only & isolated — the share server binds 0.0.0.0:<port> on its own; it exposes nothing but GET /s/<token>. No RPC, no writes, no session reads on view.
• 🧊 Frozen snapshot — the transcript and session stats are captured at share time; later edits or compactions never change an already-shared page.
• 🔑 Revocable + optional expiry — 128-bit random tokens; stop sharing anytime, or pick a 1h / 24h / 7d expiry.
• 📝 Markdown transcript — user & assistant messages are Markdown-rendered (safe: raw HTML is escaped, javascript: URLs are blocked).
• 🪗 Readable — long messages auto-fold behind a preview; consecutive tool calls collapse into one "🛠 tool calls" group.
• 📊 Session stats header — turns, steps, wall-clock duration, tool-call time, cache hits, input/output tokens, and current context occupancy with a per-category composition bar.
• 🌗 Dark & light theme — the share page follows prefers-color-scheme.
• 💾 Persists across restarts — shares are stored in ~/.dsh/dsh-share.json.
• 📡 Smart LAN address — filters out virtual adapters (WSL / Hyper-V / Docker / VPN / …) and probes the default route so the phone-reachable IP is listed first.

How it works

dsh-share is a dual-face dsh package, like other harness plugins:

Half	Runs in	Role
Host (src/host)	Node (harness process)	Folds the session event log into a transcript + stats, stores the frozen snapshot, and serves it over a separate node:http server at /s/<token>. Also exposes a /dsh-share RPC (create / revoke / list).
Client (src/client)	Browser	Registers the Share button in conversation.session.header.utilities and renders the dialog (expiry picker, copy / revoke / open).

Token estimation for the context composition reuses the harness's own fixed-density heuristic (~4 chars ≈ 1 token), matching dsh-context.

Install

From npm

dsh plugin --profile web add @zljr/dsh-share
dsh --profile web

That's it — the published package ships the built lib/, so end users never need a build step.

From source (local development)

# 1. Build the package artifacts (lib/)
pnpm install
pnpm build

# 2. Install into the web profile (local path)
dsh plugin --profile web add /absolute/path/to/dsh-share

# 3. Restart the web UI
dsh --profile web

Open any session and click Share in the header. The share server starts lazily on first use.

Configuration

Environment variables (or a config object supplied via cordis.patch.yml):

Variable	Default	Description
DSH_SHARE_HOST	0.0.0.0	Bind address of the read-only share server.
DSH_SHARE_PORT	3081	Port of the share server.

On Windows, the first 0.0.0.0 listen may trigger a firewall prompt — allow it so other devices can reach the link.

Security model

• The main harness stays loopback-only; only the read-only share surface is reachable from the LAN.
• Share tokens are 128-bit random (unguessable) and can be revoked or set to expire.
• The share page contains no JavaScript and no external assets; message text is Markdown-rendered with raw HTML escaped and dangerous URLs rejected.
• The snapshot is frozen — it is not a live view of the session, and it is never re-read from the session store after creation.

Development

pnpm install     # dev dependencies (typescript, esbuild, react, jsdom, …)
pnpm build       # bundle host (lib/index.js) + client (lib/client.js)
pnpm test        # typecheck + host/client functional tests
pnpm typecheck   # tsc --noEmit only

Project structure

src/
  shared/          # wire contract shared by both halves (type-only)
  host/
    index.ts       # /dsh-share RPC + lazy share-server lifecycle
    server.ts      # read-only HTTP server + LAN address selection
    store.ts       # token → snapshot registry (persisted JSON)
    transcript.ts  # event log → human transcript
    stats.ts       # event log → session statistics
    pricing.ts     # token estimation heuristic
    markdown.ts    # safe Markdown rendering
    html.ts        # snapshot page rendering
  client/
    index.ts       # header button registration
    components/    # ShareButton + dialog
scripts/build.mjs  # esbuild build (host ESM + client __ModuleLoader__ bundle)
tests/             # host/client functional tests (jsdom + real React)

Publishing

npm login --registry=https://registry.npmjs.org
npm publish --registry=https://registry.npmjs.org

The prepublishOnly script rebuilds lib/ before every publish, so the tarball always carries a fresh host + client bundle.

License

MIT