domitor-syh/dsh-ui-skin-switcher

A Claude Desktop-style switcher for the DeepSeek Harness (DSH) Web GUI: change the model or dial reasoning effort without ever leaving the composer.

What it is

A model and reasoning-effort switcher floating next to the input box: open the dropdown to pick a model, drag the slider to dial reasoning effort — your choice takes effect on the current session right away.

Models are grouped by vendor with a checkmark on the active one, effort levels follow whatever the model itself supports, and each model remembers the level you last picked.

The style pays homage to Claude Desktop's switcher — slider feel, rounded track, hover highlight.

Features

Feature	Detail
Model switching	Clicking the model entry expands the model list ordered by vendor; the selection applies immediately and the matching reasoning effort updates together
Effort slider	Supports both click and drag, with multiple effort nodes; supported levels differ per model, and adjustments apply immediately
Max-effort dot matrix	Reaching max effort reveals a right-to-left dot-matrix sweep on the track, with the handle glowing
Per-model memory	Remembers the last effort per model, kept across switches
Theme adaptive	All colors bound to DSH theme tokens; readable in light/dark themes and transparent skins

Video preview

The inline player needs a GitHub sign-in and cannot play while signed out; in that case click the link below to watch in a new tab.

▶︎ Watch the full demo video — model switching, the effort slider, and the top-level dot-matrix animation.

Install

Web (dsh web):

dsh plugin --profile web add @domitor-syh/dsh-ui-skin-switcher

Desktop (official channel) — enter the package name @domitor-syh/dsh-ui-skin-switcher in the plugin installer, or use the equivalent command:

dsh plugin --profile desktop add @domitor-syh/dsh-ui-skin-switcher

After installing: on Web, restart dsh web and refresh the page; on Desktop, restart the app. When running DSH from source, prefix the commands above with pnpm.

The current adaptation target is DSH 0.2.0-rc.2. The declared compatibility range is >=0.1.5-alpha.1; other builds need their compatibility confirmed.

Usage

1. Pick a model — click the button and pick from the list; the list is grouped by vendor and the current model shows a checkmark.
2. Dial effort — for models declaring reasoningEfforts, an effort button appears to the right of the model; click it, then drag the slider or tap the track to switch levels.

Why is there no reasoning-effort switcher after adding a model?

The current model does not declare a reasoning effort (reasoningEfforts) or vision capability. To keep model declarations accurate, we do not apply a uniform effort preset to every model — check the model vendor's official documentation and patch the underlying config file yourself, or hand the vendor's deep-thinking documentation (or its link) to the LLM and let it modify the config directly.

Taking effect: you edit settings.yaml under the DSH home (~/.dsh) — not this plugin's files; DSH watches that file and hot-reloads, so the change takes effect immediately with no restart and persists across restarts.

Why do it yourself? To keep declarations accurate — accuracy over coverage. Reasoning effort is a per-vendor, per-level wire value; a wrong value silently breaks requests, so we never fill in a guessed preset.

License

MIT