Organism · stable · v1.0.0 · owner: Site system lead · contract 19 of 20 points (open: figma)
Do and don't
Do: Health check
Rendered by task-header.tsOpen example: Task header · Do: Health check Use the full-page example to follow page links.
Do: Contact
Rendered by task-header.tsOpen example: Task header · Do: Contact Use the full-page example to follow page links.
Don't: The full navigation
Rendered by task-header.tsOpen example: Task header · Don't: The full navigation Use the full-page example to follow page links.
Don't: A call to action
Rendered by task-header.tsOpen example: Task header · Don't: A call to action Use the full-page example to follow page links.
Rules
| Rule | Why | Check |
|---|---|---|
| Task pages carry no site navigation, only ways back. | Fewer exits keep the reader on a three-minute task. | Review: Site system lead |
API
| Prop | Type | Required | Default | What it does |
|---|---|---|---|---|
task | string | Yes | The task's name. | |
taskI18n | string | No | The i18n key the app's script fills. | |
homeI18n | boolean | No | false | The logo's label is translated by the app. |
links | list | Yes | Links in the actions (label, href, i18n key). | |
langSwitch | boolean | No | false | Mount point for the app's language switch. |
Contract details
The full contract: identity, anatomy, variants, states, tokens, layout, motion, accessibility, content, tests
Identity
| Aspect | Value |
|---|---|
| Id | task-header |
| Layer | Organisms |
| Category | navigation |
| Owner | Site system lead |
| Status | stable |
| Version | 1.0.0 |
| Source | apps/showcase/site/system/organisms/task-header.ts (private repository; the contract and the render function are this one module) |
| Version | Date | Change |
|---|---|---|
| 1.0.0 | 2026-10-26 | Task header as one module: its markup moved out of the page builder (scripts/site) into the system. |
Use when
- The contact form, the health check, the team survey and their privacy pages. Why: A task page keeps the reader on the task; the full header would invite them away.
Do not use when
- On content pages. Why: Content pages use the site header with the full navigation.
Anatomy
| Part | What it is |
|---|---|
| root | header.site-header.is-focused |
| brand | span.header-brand: a.wordmark with the logo (filled at build time) and span.wordmark-task |
| actions | div.header-actions: links, and the app's language switch mount |
Used in: task-page.
Variants
| Variant | When | Why |
|---|---|---|
| default | Wherever the page declaration places it. | One shape per job keeps pages predictable. |
States
| State | Rendered or not applicable |
|---|---|
| default | default |
| hover | Links underline. |
| focus-visible | The --focus ring. |
| active | Not applicable: Links. |
| disabled | Not applicable: Nothing disabled. |
| loading | The language switch is hidden until the app's script fills it. |
| empty | No links: the actions stay empty (survey results). |
| error | Not applicable: No data. |
| current | Not applicable: One task, no current item. |
| visited | Not applicable: Links keep one colour. |
| expanded | Not applicable: Does not open. |
Tokens
| Part | Token |
|---|---|
| root.background | --cotton |
| task.font | --type-small-strong |
Layout
| Aspect | Value |
|---|---|
| breakpoints | Required review at 390, 768, 1024 and 1440 px; execution is not implied by this declaration; columns stack under 768 px; the wrap keeps a 16 px gutter on phones. |
| wrapping | Text wraps; nothing scrolls sideways. |
| textExpansion | Japanese runs 20 to 40% longer; headings break between phrases (jaBreaks) and blocks grow downwards. |
Spacing and rhythm
| Aspect | Value |
|---|---|
| internal | As the site header. |
| external | Sticky at the top. |
| rhythm | Always first. |
Motion
| Aspect | Value |
|---|---|
| None | No intrinsic element animation. The optional claude-entrance consumer profile may translate below-fold structure once (20px, --dur-weave, --ease-enter, --stagger); reduced motion disables it. This preserved baseline entrance is separate from element playback. |
Runtime and reuse
Render-only element; mount any registered child enhancements separately. Preserve required Site CSS, fonts, responsive and locale rules from nativeElement.
Accessibility passport
| Aspect | Value |
|---|---|
| role | a landmark or list, as stated in its parts |
| name | Its visible text |
| keyboard | Links and buttons inside, in reading order. |
| focus | The --focus ring on every link and button inside. |
| screenReader | Read in source order; decorative weaving is aria-hidden. |
| contrast | Ink on cotton 14:1; text on every dye field 4.5:1 or better (checked by check-brand). |
| target | Links and buttons are 44 px tall. |
Content
| Slot | Length | Voice |
|---|---|---|
| task | 3 words | The task |
Good: “Health check”
Bad: “Loom Health Check Wizard”
Japanese: Filled by the app from its i18n/ja.json.
Icons and illustrations
None: this element uses no icon or illustration of its own.
Decisions and exceptions
- None.
Usage
20 uses across the built pages (measured by npm run site:system).
Shared styles
The focused site header reuses header frame, wordmark-task and header-link rules; the task app owns language enhancement.
Style owners: header, logo, text-link, language-switch
apps/showcase/site/system/styles/core/header.css
Remaining review: Existing positive specimens fit light/dark 320/390/1440; task-language loading/empty states and focus order remain open.
Tests
| Aspect | Value |
|---|---|
| unit | tests/unit/site-system.test.ts: renders every do and don't example through the registry and checks the classes it owns |
| visual | Not yet: there are no screenshot baselines; the Library page is checked for sideways scroll at 1440 px by tests/site/system.spec.ts |
| a11y | tests/site/system.spec.ts: axe (0 serious or critical) on the element's Library page in light and dark |
| parity | scripts/site/system/check.ts: Library examples are rendered by the same render function the site imports |
Figma
not-yet: The Loom Site Figma library is the last stage of the plan; this element is not mapped yet.