dsh-reasoning-effort-slider
English | 中文
Turns the Effort row of DeepSeek Harness's model menu into a Codex-style reasoning-effort slider:
┌────────────────────────────────────────┐
│ Model DeepSeek-V4.1-Flash 1017 › │
├────────────────────────────────────────┤
│ Effort Max › │ ← native row; its value text is tinted by level
│ ●━━━━━━━━━━━━━━━━━━━━━━━━━◯ │ ← injected: 28px track + white knob
│ · · · · │ ← level ticks (reached ones brighten)
│ Max │ ← current level name (live while dragging)
└────────────────────────────────────────┘
Nothing is added to the composer tool row. The collapsed model seat keeps the native
model · effort ⌄ typography; only that effort text is tinted.
Interaction
| Action | Behaviour |
|---|
| Press on the track | Jumps to the pressed cell |
| Drag | The knob follows the pointer: knob and fill track the cursor, while the level name, ticks and writes use the nearest level; on release it snaps onto the cell in 80 ms, without bounce |
| Release | Commits immediately (resting the pointer for ~160 ms also commits) |
← → ↑ ↓ | One level per press, committed immediately |
Home / End | Lowest / highest level |
| Hover | Tooltip with the current level and “further right costs more tokens” |
Writes are deduplicated and coalesced: a drag commits at most a few times, and picking the level
already in effect writes nothing. A failure shows its reason under the track and clears after 4 s.
Colour and effects (driven by level position, independent of level count)
| Position | Fill right end | Starfield | Level text |
|---|
| First level | blue #4d93f8 | none | native (an Off level is never tinted) |
| Middle | blue → violet #9333ea | none | blue → indigo |
| Highest | deep violet #4c1d95 | 26 staggered stars + violet nova layer | violet #8b5cf6 |
- The fill is
linear-gradient(90deg, blue → colour at the current position): always blue on the
left, deepening to the right.
- The nova layer and the starfield are clipped to the filled part, so nothing glows to the
right of the knob.
- The knob is a white circle as tall as the track (28 px) whose centre is inset by 14 px, so it
stays a full circle at both ends.
Why it cannot break the native menu
- It only adds a
data-dres-row attribute to the native effort row (taller, wrapping). Native
classes, copy and chevron are untouched.
- Anything unexpected is fail-open: no
aria-controls on the trigger, a menu that is not the
model/effort pair, or a row outside this composer card means “do not inject” — the native menu
keeps working.
- Growing that row triggers the menu's own
ResizeObserver, which re-measures and clamps the panel
back on screen.
- On close or unload the container is removed, the attribute dropped, and every tinted text colour
restored.
Data path (native public surface only)
| Purpose | API |
|---|
| Read levels | session.modelCatalog() → groups[].models[].reasoning.efforts |
| Read current value | the modelSelection session projection (useProjection), falling back to the catalog default |
| Write level | session.selectModel({ sessionId, provider, model, reasoningEffort }) — the same entry the native menu uses |
Install
From GitHub:
dsh plugin --profile <profile> add github:sleepinggggggggggg/dsh-reasoning-effort-slider
From a local directory:
dsh plugin --profile <profile> add <absolute path to this directory>
On desktop, use Settings → Plugins → Add plugin with the same value, then reload the page (or
restart the app).
Compatibility
The supported host range is declared in package.json as engines.dsh:
DSH >=0.2.0-rc.2 <0.3.0-0, verified against 0.2.1-rc.2.
DSH checks that range before loading a plugin. A host release outside it is refused with an
explicit incompatibility message instead of leaving a slider that silently never appears.
Known limits
- Depends on the native menu's semantic structure (
aria-haspopup / aria-expanded /
aria-controls, two root rows with role="menuitem"). If a host release changes it, the plugin
silently does nothing — it never breaks the menu — and needs a follow-up.
- The model menu has to be open to change the level; nothing is shown in the composer tool row.
- A model that advertises a single level (for example with thinking disabled) renders no control,
and the native row keeps its original height (
setActive drops the growth).
- The model catalog is cached for the page lifetime (a reconnect refetches it). Providers or models
added in Settings need one page reload.
- The selection applies to the next request; a running step keeps the level it started with
(same as the native menu).
Acknowledgements
The design decisions come from reading three sibling implementations. No code was copied; this
repository is an independent implementation.
- HanaAyane/dsh-reasoning-effort — the white
knob + track + ticks + level-name visual language, and the
modelSelection projection +
session.selectModel data path.
- Microqian2th/dsh-codex-effort-slider —
the DOM anchor strategy for injecting into the native Effort row (
aria-haspopup /
aria-expanded / aria-controls / role="menuitem"), plus the blue → violet → deep violet
palette and the starfield position curve.
- Bai-2008/a-better-dsh-codex-effort-slider
— the trade-offs of taking over the model seat entirely, a route this plugin does not take.
Feedback
- Bugs and feature requests — open an issue. The template asks for the
plugin and DSH versions; that pair is usually the whole diagnosis.
- Setup help, custom model profiles, "does this work with X" — email
nupotecrosstvo@gmail.com.
- Security — email the same address instead of opening a public issue; see
SECURITY.md.
- Quick questions / build logs — @nupote_ on X.
Licence
MIT — see LICENSE.
Files
| File | Purpose |
|---|
index.js | Host half: empty apply(), only there so the bundle enters the profile |
client.js | Everything: DOM bridge, portaled slider, colour/starfield logic, dictionaries |
cordis.patch.yml | Inserts the bundle row |
locale/{zh,en}.json | Plugin-manager copy and control strings |
icon.svg | Icon shown in the plugin manager |
