wuqiwenpk/dsh-custom-bg

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A wallpaper for DeepSeek Harness. A small floating panel in the bottom-left corner uploads images, switches between them, and tunes the scrim and blur. Three wallpapers ship inside the package (imgs/), so the plugin has something to show the moment it is enabled.

Features

• Bottom-left floating panel — a 44px button that expands into a 312px card; it never takes layout space.
• Three bundled wallpapers — default.jpg, ducks.jpg and seaside.jpg live in imgs/ and are served straight from the package, no network needed.
• Upload and apply — pick a file or drop an image onto the panel. JPG, PNG, WebP, GIF and AVIF up to 24 MB.
• Keep several images — every upload stays as a thumbnail; click to switch, hover to delete. Re-uploading the same bytes stores it once.
• Scrim and blur — two sliders keep text readable: scrim 0–85%, blur 0–24px. The scrim also drives the sidebar and title bar: at 0 they step aside and the wallpaper fills the whole window, not just the chat column.
• Follows light and dark — the scrim flips between white and black with the theme, and the panel itself is themed glass.
• Persists across reloads — the active image and both sliders live in $DSH_HOME/plugin-data/dsh-custom-bg/state.json.
• No third-party runtime — the Host half uses Node built-ins only; the browser half is plain DOM.

Scrim and blur at 0: sidebar, title bar and chat column all step aside, and the wallpaper keeps its native sharpness.

Install

Plugin market (recommended)

Open Plugins → Plugin market, search custom-bg, and install. Reload the page once; the wallpaper button appears in the bottom-left corner.

The listing material lives in market/: index.json is a format-1 market index you can add as a Discover index source today, and awesome-dsh-plugin.yml is the single file to submit to the curated catalog.

Command line

dsh plugin --profile web add dsh-plugin-custom-bg

Replace web with the profile your host boots, then restart dsh web.

Straight from GitHub

dsh plugin --profile web add "git+https://github.com/wuqiwenpk/dsh-custom-bg.git"

Usage

1. Click the wallpaper button in the bottom-left corner.
2. Upload — press “上传图片” or drop an image onto the panel. The upload becomes the active background immediately.
3. Switch — click a thumbnail. The ones labelled 内置 are the bundled wallpapers, and they are always there.
4. Tune — drag 遮罩 to dim or lift the wallpaper, drag 模糊 to push it back.
5. Collapse — the × in the header, or Esc; the panel remembers whether it was open.

Data and configuration

Item	Location
Uploaded images	$DSH_HOME/plugin-data/dsh-custom-bg/<id>.<ext>
Active image and sliders	$DSH_HOME/plugin-data/dsh-custom-bg/state.json
Bundled wallpapers	imgs/*.jpg inside the package (three)

$DSH_HOME defaults to ~/.dsh. Uninstalling keeps this data; delete the directory to remove it.

Two optional config fields, in the profile's cordis.patch.yml:

- id: custom-bg
  config:
    dataDir: D:/my-data/custom-bg   # override the data directory
    dshHome: D:/my-dsh-home         # override the $DSH_HOME inference

HTTP routes

The Host half claims the /custom-bg prefix:

Method	Path	Purpose
GET	/custom-bg/api/state	Active image, image list, scrim and blur
GET	/custom-bg/image/<id>.<ext>	Image bytes, long-lived cache
POST	/custom-bg/api/upload	Raw image body (optional x-file-name); stored and activated
POST	/custom-bg/api/select	{"id": "..."}
POST	/custom-bg/api/delete	{"id": "..."}; bundled wallpapers are not deletable
POST	/custom-bg/api/settings	{"scrim": 0..0.85, "blur": 0..24}, clamped

Cross-site requests are refused (Sec-Fetch-Site / Origin), and uploads are sniffed by signature — mislabelled bodies get 415.

Compatibility

• DSH 0.2.x on the web carrier (@deepseek-ai/dsh-host-webserver plus the client-module system).
• The shell-owned file:// carrier is out of scope; the desktop app works because it runs a local dsh web.

Troubleshooting

• No wallpaper appears — another theme/appearance plugin may be writing --dsw-alias-bg-base back; keep one of them enabled.
• Why the panel sits 82px above the bottom edge — so it clears the sidebar's footer row (settings, more, account) instead of covering it.
• Upload rejected — formats are checked by file signature, so a renamed file gets 415; the limit is 24 MB.
• Start clean — delete $DSH_HOME/plugin-data/dsh-custom-bg/ and the three bundled wallpapers come back.

Development

lib/ is the source — there is no build step. lib/index.js is the Host half; lib/client.js is the browser bundle with its window.__ModuleLoader__ envelope.

npm run check   # syntax check both halves
npm run smoke   # offline Host smoke test against a temp directory

dsh --profile cb-test --from-default-profile web --dump-config
dsh plugin --profile cb-test add link:$PWD
dsh --profile cb-test web --port 43301

License

MIT