# Insight Rail (Lumen Halo): prompt.md (v1.0.0)

- id: `lumen-insight-rail` · version 1.0.0 · component · pro (All-Access)
- category: AI interfaces
- build: Base UI (one set of files; its dependencies follow the build)
- install (this build): `npx shadcn@latest add @beautiful-ui-pro/lumen-insight-rail`
- npm dependencies: none
- registry dependencies: utils, @beautiful-ui/lumen-badge, @beautiful-ui/lumen-button, https://beautiful-ui.dev/r/lumen-foundation.json
- docs: https://beautiful-ui.dev/components/lumen-insight-rail
- The install command carries everything this item needs (files, CSS, tokens, npm and registry dependencies). Prefer it to copying source by hand.

What the model noticed, as a list a person can weigh: issue or opportunity, an explanation, confidence in words and lit cells, the records it affects and the evidence it rests on, and the next step. Choosing one opens it; Show affected selects those records in linked charts and tables.

## Build it
- Stack: React 19 (`ref` is a plain prop), TypeScript, Tailwind CSS v4 utilities, a shadcn-initialised project with the `@/*` alias.
- Packages: none beyond React.
- Files: `components/ui/lumen/controls/insight-rail.tsx`; shared code: `lib/beautiful-ui/core/insights.ts`, `lib/beautiful-ui/core/insights-sample.ts`, `lib/beautiful-ui/core/coordination.tsx`, `lib/beautiful-ui/core/timeline.ts`.
- Registry dependencies, installed with it automatically: shadcn `utils` (cn), `lumen-badge`, `lumen-button`, `lumen-foundation`.
- Builds: one set of files for both, but its dependencies come in Base UI and Radix builds. Install the one that matches the project (see Install): a free item's bare URL installs the Base UI build of it and its dependencies.
- Exports to keep: `InsightRail`, `ConfidenceMeter`, and every exported type.
- CSS: the install merges this item's rules (the registry `css` field) into your global stylesheet, in `@layer components`, and adds the lumen foundation (tokens, keyframes, motion levels) once. Nothing to import by hand.
- Re-running `add` (or `--overwrite`) re-applies those rules: put overrides in your own CSS, never in the installed rules.
- Tokens: retheme with the `--lumen-*` custom properties (`--lumen-accent`, `--lumen-accent-text`, `--lumen-bad`, `--lumen-bad-text`, `--lumen-focus`, `--lumen-good`, `--lumen-good-text`, `--lumen-hairline`, `--lumen-ink`, `--lumen-muted-ink`, `--lumen-series-1`, `--lumen-series-2`, `--lumen-series-3`, `--lumen-series-4`, `--lumen-series-5`, `--lumen-series-6`, `--lumen-warn`, `--lumen-warn-text`); this item's CSS also reads `--lumen-font-mono`, `--lumen-font-sans`, `--lumen-radius-k`. Never add Tailwind colour classes inside the component.

```tsx
import { InsightRail } from "@/components/ui/lumen/controls/insight-rail";
```

## Parts

| Part | data-slot | What it is for |
|---|---|---|
| `InsightRail` | — | The list of insights. |
| `ConfidenceMeter` | — | Confidence in cells and words. |

## Sound
- Keep every `data-slot` and `data-sound` attribute: the sound layer reads them.
- Installing this item adds no audio. Nothing plays until the app mounts `GlassSoundProvider` once (install: `npx shadcn@latest add https://beautiful-ui.dev/r/glass-sound.json`, import from `@/components/beautiful-ui/glass-sound`); `GlassSoundToggle` is its mute control. Without a provider the audio engine never loads.

## Match the original
- Read `components/ui/lumen/controls/insight-rail.tsx` as the reference implementation before changing or recreating anything, and match it: sizes, colours per theme, motion timings, copy and behaviour.
- If you deviate (a prop you can't honour, a style you changed, a dependency you swapped), say so in your reply, part by part.
- Keep the accessibility contract, the keyboard map and the motion levels listed below.

## Use it when
- AI insights, anomalies, detected issues, opportunities list, insight feed, what changed and why, Lumen
- A screen where a model flags issues or opportunities for a person to review
- Next to the charts and tables its evidence points at, inside a Coordination provider

### Not when
- Plain notifications or alerts with nothing to verify: use Toast or Alert
- Insights with no evidence: show them as unverified, or not at all

## Mistakes
- Always pass evidence: an insight without it is a claim, not a finding
- Give affected.dimension and keys so Show affected can select the records

## Usage

```tsx
import { InsightRail } from "@/components/ui/lumen/controls/insight-rail";

<InsightRail insights={insights} value={openId} onValueChange={setOpenId} statuses={statuses} />
```

## Props

| Prop | Type | Default | What it does |
|---|---|---|---|
| `insights` | `Insight[]` |  | Each: id, kind (issue \| opportunity), title, explanation, confidence (0–1), affected { count, noun, dimension?, keys? }, evidence, recommendation?, detectedAt?. |
| `value / defaultValue / onValueChange` | `string \| null` |  | The open insight's id. |
| `statuses` | `Record<id, InsightStatus>` |  | Where each insight stands in its decision loop (open, accepted, pending, approved, executed…). |
| `onShowAffected` | `(insight) => void` |  | Show affected was pressed; inside a Coordination provider the records are already selected on affected.dimension. |
| `title / empty` | `ReactNode` | `"Insights" / "Nothing needs a look right now."` | The heading and the empty state. |
| `ConfidenceMeter` | `component` |  | The five lit cells and the words ("High confidence · 82%"), for your own layouts. |

Full docs: https://beautiful-ui.dev/components/lumen-insight-rail

## Customising
- Colours: set the `--lumen-*` tokens on `:root`, or on a container with the `lumen-scope` class to retheme one area. Add the `lumen-inherit` class to follow your shadcn palette instead (`--chart-N`, `--destructive`).
- Dark mode follows the `.dark` class on an ancestor (the shadcn and next-themes convention).
- Update later by re-running the install with `--overwrite` (review the diff if you edited it). Changelog: https://beautiful-ui.dev/r/changelog.json

## Keyboard

| Keys | Action |
|---|---|
| ↑ / ↓ | Move between insights |
| Enter / Space | Open or close an insight |

## Motion inventory

| Interaction | What moves |
|---|---|
| Open | The card lifts; its explanation unfolds in full |

## Accessibility contract (preserve when editing)
- Each insight is a button with aria-expanded; Up and Down move between insights
- Confidence is said in words before the number, and low confidence reads in the warning hue
- Issue or opportunity is written, not only coloured

## Install

```bash
npx shadcn@latest add @beautiful-ui-pro/lumen-insight-rail
```

Pro item: needs the `@beautiful-ui-pro` registry in `components.json` and `BEAUTIFUL_UI_TOKEN` in `.env.local` (https://beautiful-ui.dev/account). Setup: https://beautiful-ui.dev/docs/pro. Your components.json `style` picks the build: radix-*, new-york and default get Radix, base-* gets Base UI.

## Credits
- Built on shadcn/ui (https://ui.shadcn.com)

The lumen foundation (the tokens listed above, keyframes and motion levels) installs once with the first component; its CSS is public at https://beautiful-ui.dev/r/lumen-foundation.json.