dsh-wallpaper

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A wallpaper plugin for DeepSeek Harness — put a photo behind the whole GUI.

DeepSeek Harness ships three appearance modes (light / dark / follow system), and its theme tokens only carry colours — there is no wallpaper feature and no custom-CSS box. This plugin adds one: a real image behind the sidebar, the conversation and the composer, with the surfaces turned into translucent glass so the photo shows through.

What it does

• Host half (lib/index.js) registers a small API on the DSH web server:
  • GET /dsh-wallpaper/config.json — the settings file, plus the image's mtime;
  • GET /dsh-wallpaper/image — the image itself (jpg / jpeg / png / webp / avif / gif / svg);
  • POST /dsh-wallpaper/config — merge a patch into the settings (clamped to sane ranges);
  • POST /dsh-wallpaper/upload — store an uploaded photo (magic-byte check, 40 MB cap) and point the config at it.
• Client half (lib/client.js) injects one <style> element and paints the photo on <html> as a fixed background, then overrides five surface tokens with translucent versions of a neutral palette: --dsw-alias-bg-base, --dsw-alias-bg-layer-1, --dsw-alias-bg-layer-2, --dsw-alias-bg-layer-3, --dsw-alias-bg-module-platform. It also registers a 设置 → 背景壁纸 page, so the whole thing is driven from the GUI.

Overlays, masks and modals (--dsw-alias-bg-overlay, --dsw-alias-bg-mask-*) are deliberately left alone so dialogs stay readable.

Everything is wrapped in try/catch: a client entry that throws aborts the whole web boot and makes the desktop disable every third-party plugin, so this one must never throw.

Install

Requires a DSH build with client-plugin support (the desktop app or dsh web), and a plugin profile — desktop by default.

git clone https://github.com/fl0-0wer/dsh-wallpaper.git
cd dsh-wallpaper

Copy the package into the profile and the settings into the wallpaper folder — $DSH_HOME/wallpaper, or ~/.dsh/wallpaper when DSH_HOME is unset:

PROFILE="${DSH_PROFILE:-${DSH_HOME:-$HOME/.dsh}/profiles/desktop}"
WALL="${DSH_WALLPAPER_DIR:-${DSH_HOME:-$HOME/.dsh}/wallpaper}"
mkdir -p "$PROFILE/node_modules/dsh-wallpaper" "$WALL"
cp -r package.json lib "$PROFILE/node_modules/dsh-wallpaper/"
[ -f "$WALL/config.json" ] || cp config.json "$WALL/"
[ -f "$WALL/current.jpg" ] || cp current.jpg "$WALL/"

Then append this block to $PROFILE/cordis.patch.yml (or run tools/install-wallpaper.sh, which does all of the above and backs the file up first):

- insert:
    - id: dsh-wallpaper
      name: dsh-wallpaper

No restart needed: the loader hot-applies the new entry and the page picks the module up on its own.

Use it

Open 设置 → 背景壁纸 (Settings → Wallpaper): pick a photo with 选择图片…, turn the wallpaper on or off, and drag the sliders. Every change is saved immediately and the running app repaints behind the panel — no restart, no reload.

Drop a photo into the wallpaper folder and point config.json at it:

{
  "enabled": true,
  "image": "my-photo.jpg",
  "scrim": 0.45,
  "blur": 0,
  "saturation": 1,
  "translucency": 0.5
}

Switch to another window and back — the plugin re-reads the settings whenever the window regains focus, and the image is cache-busted by its modification time, so no reload is required.

Key	Default	Meaning
enabled	true	false removes the layer and the style, i.e. temporarily off
image	current.jpg	file name inside the wallpaper folder; without an extension it tries jpg → jpeg → png → webp → avif
scrim	0.45	black veil over the photo, 0–1. Raise it if text feels washed out
blur	0	blur radius in px, 8–24 gives a frosted look; above 0 the photo moves to a filtered layer
saturation	1	0.6 for a muted look, 1.4 for punchier colours
translucency	0.5	how much of the photo comes through the UI surfaces; 0 = almost opaque, 1 = strongest

Light and dark

The plugin ships two neutral palettes and switches on the theme's own body[data-ds-dark-theme] attribute, so it follows 设置 → 通用 → 外观 (light / dark / follow system) automatically. Accent colours, syntax highlighting, borders and text colours are untouched — only the surfaces change.

If you also run a glass theme (for example Catppuccin), the wallpaper takes over the surfaces; the theme keeps its accents and text palette.

Uninstall

1. Remove the - insert: dsh-wallpaper block from $PROFILE/cordis.patch.yml.
2. Delete $PROFILE/node_modules/dsh-wallpaper/.

The wallpaper folder can stay where it is; it does nothing on its own.

Project layout

dsh-wallpaper/
├── lib/index.js        host half: /dsh-wallpaper/* routes
├── lib/client.js       client half: style + layer + Settings page
├── config.json         default settings
├── current.jpg         default wallpaper (generated by make-default.py)
├── make-default.py     regenerates current.jpg with numpy + Pillow
├── docs/               screenshots used by this README
└── tools/              install / toggle scripts, smoke tests

tools/install-wallpaper.sh installs into a profile, tools/toggle-wallpaper.py unloads and reloads the entry so a changed lib/ is picked up without restarting the app, and tools/test-client.mjs + tools/test-host.mjs are dependency-free smoke tests.

License

MIT