🐋 Harness Whale Wallpaper

A live wallpaper plugin for the DeepSeek Harness web UI — the dot-matrix whale you know from DeepSeek, rebuilt as ≈1,750 breathing WebGL2 particles that slowly turn in the mist and swirl around your pointer like liquid. Light and dark themes both included. No branding, no particle connection-lines, no clutter.

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📣 Listed in awesome-dsh-plugin — the curated DeepSeek Harness plugin list.

✨ Demo

Both themes are live wallpapers: the whale keeps breathing and turning, mist drifts, and when your pointer crosses the whale, nearby particles form a continuous liquid vortex with an outward radial glow wave, then softly settle back (~650 ms). GIFs below run at 2× speed — the real pace is calmer. Try the live preview →

Dark mode

Light mode

Inside the real Harness UI

Captured from a live DeepSeek Harness web client. The wallpaper layer sits beneath the app frame — sidebar, conversation canvas and input area keep working, particles swirl behind the interface.

Light UI	Dark UI

📦 Install

Requires the DeepSeek Harness dev-preview (@deepseek-ai/dsh) with its web profile and pnpm on PATH.

A. One line via npm (recommended)

dsh plugin --profile web add dsh-plugin-harness-whale

Restart dsh web and refresh http://127.0.0.1:3080 — the whale appears behind the app. The command installs the package into your profile and registers its bundle layer automatically; tweak the config in ~/.dsh/profiles/web/cordis.patch.yml if you want non-default values.

B. From a release tarball

1. Download dsh-plugin-harness-whale-<version>.tgz from Releases and extract the package/ folder to:

   ~/.dsh/profiles/node_modules/dsh-plugin-harness-whale

2. Register it in the insert list of ~/.dsh/profiles/web/cordis.patch.yml:

   - insert:
      - id: harness-whale-wallpaper
        name: dsh-plugin-harness-whale
        config:
          enabled: true
          quality: auto
          brightness: 0.9
          scale: 1
          interactionStrength: 1
          activeDimming: 0.22

3. Restart dsh web.

C. Look before you leap

Open the online preview — the same render kernel as the plugin, no install needed.

⚙️ Configuration

Override per-profile via cordis.patch.yml; defaults live in the plugin's own cordis.patch.yml:

Values are validated host-side by Schemastery and served to the client through a same-origin read-only endpoint. If public slots or required services are missing in your Harness build, the plugin logs a clear error and stops safely.

🌊 Behavior

• The whale outline is sampled directly from the favicon.svg path in this repo — WebGL2 renders ≈1,750 regular grid points.
• ~11 s vertical breathing, a ~29 s slow turn, plus tail-fin motion and gentle buoyancy; the pointer adds ~6° parallax, positional offset and an outward-spreading local brightness wave.
• Inside the whale, particles within ~160 px of the pointer form a continuous liquid vortex with a mild alternating radial wave — no hollow core forms; after the pointer leaves they settle back softly in ~650 ms. The base dot matrix is never modified.
• Follows the Harness appearance setting (light / dark / system): dark keeps white→ice-blue particles, light switches to high-contrast ink #050b14, with matching semantic tokens, mist layers and background.
• Both themes expose the full-screen base layer behind the app frame; sidebar, inputs, conversation content and settings windows keep their own surfaces — no full-screen veil washing out the dots.
• Full brightness with no session open; ~72 % once a session opens; at least 34 % while typing or a task runs (still honors a stronger activeDimming), ~600 ms transitions.
• Pauses when the page is hidden; completely still under prefers-reduced-motion: reduce.
• DPR capped at 1.5; auto steps down high → medium → low after sustained frame drops.
• Without WebGL2, a static Canvas2D dot-matrix whale is rendered automatically.
• On disable or hot-swap, every DOM node, style, listener and animation is removed and the original Harness theme is restored.

🧩 Architecture & ecosystem

This is one of the first third-party client plugins for DeepSeek Harness. It participates in the lifecycle through the public shell.overlay slot: the wallpaper canvas is prepended beneath the app frame and never blocks Harness controls.

src/
├── index.ts        host entry — config route via webServer inject
├── client.tsx      client entry — mounts through shell.overlay slot
├── renderer.ts     the single WebGL2 render kernel (shared with the preview)
├── theme.ts        semantic token overrides + injected CSS
├── activity.ts     session/input/run focus dimming
├── whale-path.ts   samples the favicon.svg outline into grid points
└── config.ts       Schemastery schema + defaults

Zero runtime dependencies; three devDependencies (esbuild, typescript, schemastery). lib/ and preview.js are build artifacts produced by pnpm build.

🔧 Development

pnpm install
pnpm build     # rebuild lib/ + preview.js
pnpm check     # schema & bundle sanity checks

# standalone preview (same renderer as the plugin)
python3 -m http.server 4173   # then open http://127.0.0.1:4173/

❓ FAQ & troubleshooting

No whale after installing? Restart dsh web (the client bundle composes at boot), then refresh. Verify with dsh plugin --profile web why dsh-plugin-harness-whale (npm route) or that the insert entry exists in ~/.dsh/profiles/web/cordis.patch.yml (tarball route). The page body should carry data-dsh-harness-whale="true".

pnpm ≥ 10 blocked the install script? This plugin declares no lifecycle scripts, so nothing is blocked — no allowBuilds entry is needed.

Frame drops / fan noise? Set quality: low or medium, lower brightness, or reduce interactionStrength. auto already steps quality down under sustained drops.

No WebGL2 in your browser? The static Canvas2D fallback renders automatically — you get the still dot-matrix whale instead.

Uninstall. npm route: dsh plugin --profile web remove dsh-plugin-harness-whale. Tarball route: remove the insert entry and delete ~/.dsh/profiles/node_modules/dsh-plugin-harness-whale. Either way the original theme and layout come back after a restart.

Updating. npm route: dsh plugin --profile web add dsh-plugin-harness-whale@latest. Tarball route: extract the new release over the old directory. Restart dsh web afterwards.

🔭 Compatibility

Targets the browser web UI of @deepseek-ai/dsh 0.1.1-rc.2. The Harness is in dev-preview — if dsh.client, ctx.theme or the shell.overlay protocol change, compatibility needs a re-check.

🗒️ Changelog

See CHANGELOG.md.

📄 License

MIT