dsh-conv-export（对话导出）

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Export the current DeepSeek Harness conversation as Markdown, PDF (print dialog), or a long PNG image — one click in the session header, zero core changes.

Problems it solves

• Conversations evaporate: long sessions hold decisions, code, and error trails, but the harness has no built-in way to take them out. This plugin turns the rendered transcript into portable artifacts.
• One format never fits: sharing with a teammate wants Markdown; archiving for compliance wants PDF; pasting into chat wants an image. All three ship in one menu.
• Exports must match what you see: extraction runs at click time over the rendered DOM (including paged-in history), so the artifact is exactly the transcript on screen — code fences, tables, and emphasis preserved.

Features

• Header export button (download glyph) registered into the conversation.session.header.actions slot — additive, safely uninstalled, and mirrors its open state via aria-pressed.
• Dropdown menu with three sinks:
  • Markdown (.md) — client-side download; assistant turns are serialized back from rendered HTML (headings, lists, fenced code with language, tables, blockquotes, links, inline emphasis).
  • PDF (download) — the conversation is rasterized, sliced into A4-proportioned pages, and downloaded as a self-contained multi-page PDF. No print window, no dialog: the app tab never freezes.
  • Long image (PNG) — offscreen render measured and rasterized through SVG foreignObject at 2x, images inlined as data URLs, downloaded as one tall PNG (height capped at 16000px).
• Sensible file names from the session title (sanitized, capped).
• Follows the harness --dsw-alias-* design tokens; menu labels switch zh/en by document language.
• Menu hygiene: Escape or outside-click closes; a toast reports long-image raster failures.

Install

Requires Node.js ≥ 22 and pnpm (npm install -g pnpm) — dsh plugin add installs the bundle into the profile with pnpm.

dsh plugin --profile web add https://github.com/beijingwahw/dsh-conv-export/archive/refs/tags/v0.1.0.tar.gz
dsh web   # restart the server to pick the plugin up

Tag URLs are immutable, so the tarball checksum never changes. (Branch URLs like refs/heads/main move with every push and trip pnpm's ERR_PNPM_TARBALL_INTEGRITY once a lockfile has recorded an older checksum.)

Usage

Open any conversation, click the download icon in the session header, pick a format. All three formats download directly — no dialogs, the app tab stays responsive.

How it works

• The host half is an empty cordis registration shell; all behavior lives in the browser bundle (lib/client.js), mounted by the stock loader with zero core changes.
• Extraction walks [data-conversation-scroll] in document order, pairing user rows ([class*="_userRow"] bubbles) with assistant markdown containers ([class*="_markdown_"]) — the stock renderer's stable class contracts.
• The long-image path serializes a clean clone (explicit XHTML namespace, no offscreen offsets) into an SVG foreignObject, validates it with DOMParser, then rasterizes on a 2x canvas. External images are fetched and inlined first; unreachable ones are dropped rather than tainting the canvas.

Known limitations

• The long-image and PDF paths rasterize through SVG foreignObject (all evergreen browsers paint it); exotic embedded content may flatten.
• PDF pages are raster images (text is not selectable); for selectable text use the Markdown export.
• Export scope is the active conversation column only — sidebar titles and settings pages are out of scope.

Troubleshooting

• 'pnpm' is not recognized during dsh plugin add → install pnpm first: npm install -g pnpm.

• ETIMEDOUT fetching the GitHub tarball → pnpm/Node ignores the Windows system proxy (browsers read it; terminals don't). Fix once, forever — persist your proxy into npm config (pnpm reads it too):

  $s = Get-ItemProperty 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings'
  if ($s.ProxyEnable -and $s.ProxyServer) {
    npm config set proxy "http://$($s.ProxyServer)"
    npm config set https-proxy "http://$($s.ProxyServer)"
  }

  Every later dsh plugin add / pnpm / npm call then goes through the proxy with no env vars. Undo with npm config delete proxy; npm config delete https-proxy when running without the proxy tool. Per-session alternative: $env:HTTPS_PROXY = "http://$($s.ProxyServer)". Or switch the proxy tool to TUN/global mode so all traffic is covered. Prefer a fixed port? Pick an obscure one such as 49151 — the last registered port before the dynamic range, so no common service, no ephemeral allocation, and no proxy tool default ever lands on it. Port-free fallback: download the tarball in your browser and install locally: dsh plugin --profile web add .\Downloads\main.tar.gz.

• EADDRINUSE ... :3080 on dsh web → a previous dsh web is still bound to the port. Stop it (Ctrl+C in its terminal; on Windows: Get-NetTCPConnection -LocalPort 3080 | ForEach-Object { Stop-Process -Id $_.OwningProcess -Force }), or start on another port with dsh web --port 3081.

License

MIT