# Layout Morph (Notchset): prompt.md (v1.0.0)

- id: `layout-morph` · version 1.0.0 · block · pro (Pro)
- category: Application UI
- build: Base UI (one set of files; its dependencies follow the build)
- install (this build): `npx shadcn@latest add @beautiful-ui-pro/layout-morph`
- npm dependencies: none
- registry dependencies: utils, @beautiful-ui/segmented-control, https://beautiful-ui.dev/r/notchset-foundation.json
- docs: https://beautiful-ui.dev/components/layout-morph
- The install command carries everything this item needs (files, CSS, tokens, npm and registry dependencies). Prefer it to copying source by hand.

A library that rearranges itself: GRID, LIST, BY TEAM and BY AGE, with every card travelling to its new slot (position and size over 640ms, staggered) and the stage height gliding with it; hover or click a card to pin its runs, quality and cost in a rolling strip below.

## 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/notchset/blocks/layout-morph.tsx`; shared code: `lib/beautiful-ui/notchset/instrument.tsx`, `lib/beautiful-ui/notchset/root.ts`.
- Registry dependencies, installed with it automatically: shadcn `utils` (cn), `segmented-control`, `notchset-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: `LayoutMorph`, and every exported type.
- CSS: the install adds the notchset foundation (tokens, keyframes, motion levels) to your global stylesheet 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 `--notchset-*` custom properties (`--notchset-check`, `--notchset-control-edge`, `--notchset-draw-from`, `--notchset-ease-bloom`, `--notchset-ease-glide`, `--notchset-ease-key-down`, `--notchset-ease-key-up`, `--notchset-ease-travel`, `--notchset-fade`, `--notchset-focus-color`, `--notchset-focus-inset`, `--notchset-grow-to`, `--notchset-key-down`, `--notchset-key-up`, `--notchset-life-from`, `--notchset-life-ms`, `--notchset-node-blink`, `--notchset-node-bloom`, `--notchset-node-delay`, `--notchset-plate-color`, `--notchset-rise-from`, `--notchset-rule`, `--notchset-scan-to`, `--notchset-scroll`, `--notchset-signal`, `--notchset-sweep-to`, `--notchset-travel`). Never add Tailwind colour classes inside the component.

```tsx
import { LayoutMorph, type MorphItem } from "@/components/ui/notchset/blocks/layout-morph";
```

## Parts

| Part | data-slot | What it is for |
|---|---|---|
| `LayoutMorph` | `layout-morph` | View control, the morphing stage and the detail strip. |

Style a part with `[data-slot="<slot>"]` selectors or its `className`; keep the attributes when editing.

## 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 `SoundProvider` once (install: `npx shadcn@latest add https://beautiful-ui.dev/r/notchset-sound.json`, import from `@/components/ui/notchset/sound-provider`); `useSound()` gives `muted` and `setMuted` for a mute control. Without a provider the audio engine never loads.

## Match the original
- Read `components/ui/notchset/blocks/layout-morph.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
- view switcher, grid list toggle, kanban grouping, card library, agent catalog, morphing layout, Notchset
- A library people browse in more than one arrangement
- Showing how items regroup by team or age

### Not when
- Hundreds of items: use a virtualised table
- A single fixed arrangement: use a plain grid

## Mistakes
- Keep item ids stable so cards travel instead of remounting
- Keep the list to a few dozen; every card animates

## Usage

```tsx
import { LayoutMorph, type MorphItem } from "@/components/ui/notchset/blocks/layout-morph";

export function Library({ agents }: { agents: MorphItem[] }) {
  return <LayoutMorph title="Agent library" items={agents} groups={["PLATFORM", "GROWTH", "SUPPORT", "RESEARCH"]} />;
}
```

## Props

| Prop | Type | Default | What it does |
|---|---|---|---|
| `items` | `{ id, name, group, model, runs, quality, ageDays, cost, icon? }[]` |  | icon is a 14×14 stroke path. |
| `groups / groupLabel` | `string[] / string` |  | The groups in order and the group view's label (BY TEAM). |
| `ages / threshold` | `{ label, maxDays }[] / number` |  | BY AGE columns, and the quality below which the number reads in signal (85). |

Full docs: https://beautiful-ui.dev/components/layout-morph

## Customising
- Colours: the component reads your shadcn tokens (`--background`, `--foreground`, `--border` …), refined by the `--notchset-*` tokens. The signal colour is `--notchset-signal` (it falls back to `--destructive`). Set tokens on `:root`, or on any container to retheme one area.
- 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 |
|---|---|
| ← → | Change the view |
| Tab then Enter | Pin a card's numbers |

## Performance

- Layout is computed per view and width; cards move with CSS transitions only.

## Responsive

- The grid drops from 6 to 4, 3 and 2 columns with the stage width; group views stack under 480px.

## Motion inventory

| Interaction | What moves |
|---|---|
| View change | Cards travel to their slots (640ms, 22ms apart); the stage height glides |
| Group headers | Fade in once the cards have moved (300ms) |
| Detail | Numbers roll |

## Accessibility contract (preserve when editing)
- Cards are toggle buttons named with their team and quality, in a list named by the current view
- The detail strip is a polite live region
- Views are a radio group

## Install

```bash
npx shadcn@latest add @beautiful-ui-pro/layout-morph
```

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 notchset 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/notchset-foundation.json.