dsh-conv-search（对话内文本搜索）

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In-conversation text search for the DeepSeek Harness web UI — the Ctrl+F you already know, scoped to the current chat session. A floating search bar highlights every match in the rendered transcript and walks between them, without touching a single line of harness core code.

Problems it solves

• Long sessions are unsearchable: the browser's native find searches the whole page (sidebar, composer, chrome) and cannot follow a conversation that keeps streaming. This plugin searches only the active conversation scrollport and stays in sync while the model is still writing.
• No way to jump between occurrences: native find gives no "n / total" navigation. This plugin provides Enter / Shift+Enter and prev/next buttons with wrap-around, centering each match in view.
• Highlighting must not fight React: the transcript DOM is React-owned and re-renders continuously during streaming. Instead of wrapping matches in <mark> nodes (which would mutate React-managed text and break reconciliation), the plugin paints ranges through the CSS Custom Highlight API — an overlay that survives every re-render and needs zero DOM cleanup.

Features

• Ctrl/Cmd+F opens the floating search bar (only when a conversation is rendered — otherwise the browser's native find stays untouched); Esc closes it from anywhere, including while the input holds focus.
• Matching across every rendered chat node: user messages, assistant text, tool cards, and paged-in history. Two toggles mirror the browser/IDE find bar: Aa (match case) and ab (whole word) — essential for hunting error codes, function names, and API identifiers.
• Live n / total counter with Enter (next) / Shift+Enter (previous) navigation and wrap-around; F3 / Ctrl+G work too, the browser/IDE find-bar convention.
• Query history: ArrowUp / ArrowDown cycle through your recent queries (most recent first, deduplicated), restoring the draft you were typing when you walk back past the newest entry.
• Zero-result queries answer back: the count turns red, the bar border follows, and the bar gives a one-shot shake (honoring prefers-reduced-motion). Repeated Enter on no results re-shakes instead of staying silent.
• The active match is painted in a stronger color and scrolled into view automatically.
• The header action button mirrors the open state (aria-pressed), so you always know whether search is active.
• Streaming-aware: a MutationObserver re-runs the search (debounced) while output streams or older pages load, without stealing your scroll position. The active match is anchored by identity (text node + offset), so a paged-in older page or a streamed delta never jumps your cursor to a different occurrence.
• Scope discipline: the composer seat and the plugin's own bar are excluded, so your draft text never produces phantom hits.
• Follows the harness theme through --dsw-alias-* design tokens; Chinese/English UI picked from the document language.
• Session header action button (search icon) registered through the conversation.session.header.actions slot — the additive, unload-safe composition route.

Install

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

One-liner

dsh plugin add beijingwahw/dsh-conv-search --profile web
dsh web   # restart the server to pick the plugin up

Common follow-ups: upgrade dsh plugin upgrade dsh-conv-search --profile web; uninstall dsh plugin remove dsh-conv-search --profile web; local-path install dsh plugin add ./dsh-conv-search --profile web.

The package declares dsh.bundle.patch (mounts the host registration row) and dsh.client (serves the browser half at /plugins/<id>/client.js). lib/ is committed, so the GitHub tarball installs without a build step.

Verify the mount:

dsh --profile web --dump-config | grep conv-search

Usage

How it works

• src/client/engine.ts — pure DOM helpers: text-node walk, case-insensitive range matching, CSS.highlights paint (dsh-conv-search for all matches, dsh-conv-search-active for the focused one), and scroll-into-view. No cordis, no React — unit-testable against jsdom.
• src/client/controller.ts — the floating bar (plain DOM, so it never couples to the shell's React version), keyboard capture, debounced search passes, and the transcript MutationObserver that keeps highlights honest during streaming.
• src/client/index.ts — the cordis client half: installs the controller through ctx.effect and registers the header action button via ctx.slots.inject('conversation.session.header.actions', ...), so the button appears and disappears with the slot declaration and plugin fiber.
• src/index.ts — the host half is an empty registration shell; all behavior is browser-side.

Model Experience

None. The plugin only reads the rendered transcript in the browser; it touches no prompt, message, schema, stream, tool, or provider request.

Development

pnpm install
pnpm run typecheck   # strict TS, no emit
pnpm run build       # tsdown: host ESM + browser client bundle, then tsc for declarations
pnpm test            # vitest (jsdom): engine, controller, i18n

The client bundle enforces the harness purity rule: platform modules (react, cordis, the seeded client packages) stay externals, and any other @deepseek-ai/* value import fails the build.

Known Limitations and Deferred Work

• Matching is plain-text only — no regex, no diacritic folding, no cross-node phrase matching (a phrase split across styled spans will not match).
• Requires a browser with the CSS Custom Highlight API (Chrome/Edge 105+, Safari 17.2+, Firefox 132+). On unsupported browsers the bar still counts matches but paints no highlight.
• The bar position is fixed (top: 64px; right: 24px); it is not draggable yet.
• Search scope is the active conversation column only — sidebar session titles and settings pages are intentionally out of scope.

Troubleshooting

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