dsh-session-link

Pass context between DSH sessions without the download–transfer–unzip dance.

dsh-session-link is a plugin for DeepSeek Harness. One click in the session header copies a reference to the current session; any other session picks it up and reads the whole conversation back as clean user:/assistant: text.

When you'd want this

• Session A figured something out; session B needs it. Without this, you export the session log, move the file, unzip it, and read zstd JSONL by hand. Here, A's header button copies @session-<uuid>, you paste it into B, and the model calls session_read — done.
• The reference stays a first-class object. @session-<uuid> is all ASCII, so it renders as a colored chip in the composer and in sent bubbles — not as a blob of text you have to explain.
• What comes back is readable, not raw. session_read projects the event stream to conversation rows and skips chunk/tool/reasoning noise; a 7MB log typically reads back as ~60KB of dialogue.

What you get

• Header action「🔗 复制 Session ID」 — one click copies the current session's @session-<uuid>. Pure clipboard work; no host round-trip.
• @ mention source session — typing @ in the composer lists every local session by title (searchable by title or id); picking one inserts the reference as a chip.
• Chip repaint — @session-… references show blue-on-white in sent bubbles, scoped precisely so other @ mentions are never touched.
• session_read tool — the model resolves @session-<uuid>, a dsh-session: URI, or @title and receives { sessionId, title, cwd, logPath, seqRange, transcript, truncated }. Read-only, live-first, works for sandboxed sessions too.

Preview

Copy — one click in the session header puts @session-<uuid> on the clipboard:

Paste — the reference lands in another session's composer as a chip, ready to send and read:

Install

Pinned to a release — build artifacts are committed, so there is nothing to build and no registry involved:

dsh plugin --profile web add "github:jinhuang712/dsh-session-link#v0.1.0"
# restart dsh web, then refresh the page

Or track main to pick up unreleased commits:

dsh plugin --profile web add "github:jinhuang712/dsh-session-link#main"

Or from a local checkout, linked so edits show up on refresh:

git clone https://github.com/jinhuang712/dsh-session-link.git
dsh plugin --profile web add "link:$PWD/dsh-session-link"

If your dsh profile directory is a pnpm workspace, pnpm asks for -w before touching its root — pass it through: dsh plugin --profile web add -w ….

After install (and one restart), the header button, the @ menu group and the session_read tool are available permanently in every session. The companion skill dsh-session-link registers with the install (dsh.skills declaration) and teaches the model when and how to read a reference.

Usage

Share a session: open it, click「🔗 复制 Session ID」in the header, paste into any other session's composer — the reference appears as a chip — and send.

Pick a session without switching: type @ in the composer, find the session by title in the session group, insert it.

Read a reference: the model calls

session_read({ "link": "@session-7fc2d98e-…" })

Input	Behaviour
@session-<uuid>	Exact, recommended — what the button produces
dsh-session:<b64>	The URI form from older link payloads
@title	Exact title match; a miss or ambiguity returns candidates/ids — retry by id

Optional: maxChars (projection budget, default 64000), truncate ("tail" keeps the most recent rows — default; "head" keeps the earliest), raw (debug: first 200000 chars of the original JSONL).

Boundaries (measured, not guessed)

• Chinese titles (@分析…) don't chip — the shipped @-mention regex has no /u flag. The copy format is the id, never the title, precisely for this.
• @title resolution needs the host's sessionQuery title snapshots; when unavailable the tool says so and points at the id form.
• Reading is read-only and live-first: sessionQuery.readSession reflects a running session at its current state; the on-disk log path is resolved for reference (logPath) but never written.

Architecture

• Host half (lib/index.mjs): Cordis entry
  • defineTool registers session_read; execute parses the reference, resolves titles via sessionQuery, projects the JSONL event stream, and caps it by budget
  • no webServer routes — the copy button is pure clipboard
• Client half (src/ → lib/client.js): __ModuleLoader__.load bundle
  • runtime.js binds the host's React from the loader's require — never bundled, so the plugin shares the host's React instance
  • copy-button.js the header action; mention.js the @ session source; chips.js the MutationObserver repaint
• Skill (skills/dsh-session-link/SKILL.md): usage guide shipped with the install

Develop

lib/client.js and its source map are build output, committed so the GitHub install stays one line. Edit src/, then:

pnpm install
pnpm build      # esbuild src/index.js -> lib/client.js + lib/client.js.map

Verify

It loaded at all:

• __DSH_BOOT__ includes the dsh-session-link client row, and /plugins/dsh-session-link/client.js returns 200
• cordis_inspect_query (Tool.listTools) lists session_read

Then exercise the loop:

Look at	Expect
the session header	the「🔗 复制 Session ID」button; clicking flips it to「✓ 已复制」 and the clipboard holds @session-<uuid>
the composer	pasting the reference shows a chip; typing @ offers the session group by title
a sent message	the reference renders as a blue chip, other @ mentions unchanged
session_read on the pasted reference	returns the session's title/cwd and a user:/assistant: transcript

Uninstall

• Remove the dsh-session-link insert row from the web profile's cordis.patch.yml
• Remove the dsh-session-link dependency from the web profile's dsh.profile.bundles and run pnpm remove

License

MIT