Introduction

In DeepSeek Harness, the Web UI can be extended in appearance and behavior via plugins. dsh-arcaea-theme is a theme plugin maintained by a1swg1159-pixel, designed to provide an original high-key prismatic memory theme for the DeepSeek Harness web UI.

It is suitable for scenarios where you only want to adjust the visual style of the Web UI without the plugin replacing chat components, modifying session data, or initiating network requests. The plugin code is MIT licensed, and the GitHub repository address is:

https://github.com/a1swg1159-pixel/dsh-arcaea-theme

What is this

dsh-arcaea-theme is a DeepSeek Harness Web UI theme plugin. It translates local visual research into a Web UI appearance, implemented using CSS and inline SVG, and does not include official Arcaea or lowiro assets.

Its positioning is straightforward: to change the visual style of the DeepSeek Harness web UI to a high-key prismatic memory style and allow for the removal or disabling of the plugin to restore previous theme preferences.

Core Features

The following verified capabilities are listed:

  • Provides an original high-key prismatic memory theme for the DeepSeek Harness web UI.
  • Implemented using CSS and inline SVG, excluding official Arcaea or lowiro assets.
  • Selects a dedicated arcaea-light palette when enabled.
  • Restores previous theme preferences upon removal or disabling the plugin.
  • Provides Exo display face and Noto Sans CJK SC body faces, embedded as data URLs in dist/client.js.
  • Does not replace chat components, modify session data, or initiate network requests.

Installation and Enablement

The installation commands in the README use local paths; you need to replace the paths with your actual local paths before execution.

First, execute the build in the plugin directory:

pnpm run build

Next, run the DSH plugin commands from the DeepSeek Harness repository directory. Note: This plugin project does not expose the dsh executable, so do not run pnpm dsh directly.

pnpm --dir D:\deepseek-harness run dsh -- plugin --profile web remove dsh-arcaea-theme
pnpm --dir D:\deepseek-harness run dsh -- plugin --profile web add D:\zhuomian\dsh-plugin\dsh-arcaea-theme
pnpm --dir D:\deepseek-harness run dsh -- web

The commands above perform three actions sequentially: remove the existing plugin, add the local plugin, and then launch the Web UI.

After starting, perform a hard refresh in the browser by pressing Ctrl+F5.

Typical Usage

If you are just verifying the plugin build and packaging content, you can run in the plugin directory:

pnpm run check
pnpm pack --dry-run

These two commands come from the Verify examples in the README, used to check the plugin build and packaging results.

Applicable Scenarios and Notes

Suitable for the following scenarios:

  • Wish to adjust the appearance of the DeepSeek Harness web UI.
  • Wish for the plugin to only change visual style, not replace chat components.
  • Wish for the plugin to not modify session data or initiate network requests.
  • Are accustomed to adding plugins via the local plugin directory.

Precautions before use:

  • The plugin runs with the permissions of the current dsh process; you should check the source code, license, and build artifacts before installation.
  • DSH’s plugin web route serves client.js, not arbitrary package assets. Therefore, fonts are selected to assets/fonts/ during build and embedded into dist/client.js.
  • The installation commands in the README use local paths, not generic registry installation commands. Replace them with your local paths before executing.
  • This plugin has no affiliation with lowiro or Arcaea; it does not contain game images, characters, trademarks, charts, or other official materials.
  • Third-party files in the reference directory are outside the scope of this plugin’s license and will not be packaged.

Conclusion

The value of dsh-arcaea-theme lies in providing a DeepSeek Harness web UI visual theme that is installable, removable, and recoverable. It does not replace chat components, modify session data, or initiate network requests, making it suitable for use as a visual layer plugin.

Project repository:

https://github.com/a1swg1159-pixel/dsh-arcaea-theme