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claude-plugins/composer/templates/design-system/SKILL.md
movq 92f005895c feat(composer): expand ui-system from placeholder to full interview 
ui-system skill is no longer a placeholder. Full design-system and
interaction-design interviews with branching, defaults, batched
question clusters, and an 'accept default / skip' protocol so users
move through fast when they have taste and patient when they don't.

Design system interview covers: visual posture, color (with WCAG
contrast verification before writing), typography, spacing, radii,
shadows, density, visual motion, components, theming, and
accessibility tokens (focus ring, hit targets).

Interaction design interview covers: input model, state-surface
declarations per action class, motion posture and triggers,
breakpoints, i18n, four state postures (empty/loading/error/offline),
time formatting, keyboard policy, optimistic-update strategy with
rollback and conflict resolution, gestures, focus management,
notification patterns, selection, and drag-and-drop.

Reference banks for "make it look like Linear/Notion/Stripe/etc."
translate well-known products into starting tokens — user still
confirms each value, no silent invention.

Templates expanded to hold the full output:
- design-system/SKILL.md grew sections for accessibility tokens,
  density, dark-mode mapping, contrast verification, theming variants
- design-system/tokens.ts now exports color (light + dark), typography
  (family/size/weight/line-height/letter-spacing), spacing + density-
  aware padding tokens, radii, shadows, motion (durations + easings),
  z-index scale, breakpoints, hit-target minimums
- design-system/components.md gained anatomy/state/a11y coverage for
  10 primitives plus an "adding a new component" workflow and a
  "patterns to avoid" list (nested cards, color-only meaning, etc.)
- interaction-design/SKILL.md gained sections for optimistic updates,
  conflict resolution, gestures, focus management, notification
  patterns, selection/multi-select, and drag-and-drop

Hard rules: never invent on the user's behalf; <TBD> instead. Verify
contrast before writing color tokens. Always declare prefers-reduced-
motion as honored.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-29 21:10:36 -05:00

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name, description
name description
<SLUG>-design-system Design system for the <PROJECT NAME> project. Color tokens, typography, spacing, radii, shadows, density, motion, accessibility tokens, and component vocabulary. Load and apply whenever building UI for this project — generating mocks, writing components, picking colors, configuring Tailwind, styling native screens, building themes, designing CSS, or making any visual decision. The canonical visual reference for this project; if anything visible is being touched, this skill should be in context. Pairs with <SLUG>-interaction-design.

design system

Status: <draft | reviewed | locked> Generated by Composer's ui-system phase. Re-running that phase updates this skill (with confirmation on overwrite).

How to use this skill

When generating or editing UI for this project — a mock, a real component, a theme, a CSS file — read this SKILL.md and tokens.ts first, then use the tokens. Never hardcode visual values. Don't introduce new components without proposing them in components.md.

Sidecar files in this skill directory:

  • tokens.ts — machine-readable token export. Import in mocks/code.
  • components.md — component vocabulary, anatomy, states.

Visual posture

<TBD: visual posture sentence>

Color

Brand

  • Primary: <#hex> —
  • Secondary (if any): <#hex> —

Neutrals

  • Tone: <warm | cool | true>
  • Scale: 50 / 100 / 200 / 300 / 400 / 500 / 600 / 700 / 800 / 900 / 950
  • See tokens.ts for hex values.

Semantic

Role Light Dark (if dark mode)
Success <#hex> <#hex>
Warning <#hex> <#hex>
Error <#hex> <#hex>
Info <#hex> <#hex>

Dark mode

  • Posture: <yes | no | system-following>
  • Token mapping: see tokens.ts colorDark (if applicable)

Accessibility contrast

  • Target: WCAG <AA | AAA>
  • Verified pairings (against neutral.50 light bg, neutral.950 dark bg):
    • body text: — ✅
    • UI components: — ✅

Typography

  • Display family: , weights
  • Body family: <name | "(same as display)">, weights
  • Mono family (if used):
  • Scale base: , ratio <1.125 | 1.2 | 1.25 | 1.333 | 1.5>
  • Sizes: see tokens.ts fontSize — xs / sm / base / lg / xl / 2xl / 3xl / 4xl
  • Line-height:
    • Tight (display):
    • Normal (body):
    • Relaxed (long-form):
  • Letter-spacing (if customized):

Spacing

  • Base unit: <4px | 8px>
  • Scale (in base units): 0, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 24
  • See tokens.ts spacing for px values.

Radii

  • Posture: <sharp | tight | medium | pillowy | mixed>
  • sm · md · lg · pill 9999px · full 9999px

Shadows & elevation

  • Posture: <flat | subtle | generous>
  • Scale: xs / sm / md / lg / xl — see tokens.ts shadow
  • (Or "no shadows in this system" if posture is flat — use borders for elevation hierarchy.)

Density

  • Default: <comfortable | cozy | compact>
  • Padding tokens: see tokens.ts padding — tight / default / loose
  • Component impact: list components whose default density differs from the global default.

Visual motion

  • Default duration: (token: motion.duration.default)
  • Default easing: (token: motion.easing.standard)
  • Reduced-motion fallback: linear, instant where appropriate

Behavioral motion (when things animate, what triggers them) is in the interaction-design skill, not here.

Accessibility tokens

  • Focus ring: <style — solid 2px brand at 60% opacity / etc.>
  • Focus ring color token: color.focus
  • Focus offset:
  • Hit-target minimum: 44×44px (mobile) / 32×32px (desktop pointer)
  • Contrast targets: WCAG <AA | AAA> — body 4.5:1, UI 3:1

Components

See components.md in this directory for the full vocabulary, anatomy, and state coverage. The TL;DR list of primitives:

  • Button (primary / secondary / ghost / destructive / link)
  • Input (text / textarea / select / checkbox / radio / toggle)
  • Card / Surface
  • Badge / Tag
  • Avatar
  • Tooltip
  • Modal / Drawer / Popover (behavioral patterns in interaction-design skill)
  • Tabs
  • Menu / Dropdown
  • Toast / Notification

Plus project-specific components from ia.md: see components.md.

Theming variants

  • Multi-brand / tenant theming: <yes | no — typically no for v1>
  • Theme-switching mechanism (if applicable): <CSS variables / data-theme attr / etc.>

TBD on return

  • <TBD: ...>
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