page-layout

Design

Add or update app page headers and layout using PageHeader and PageLayout. Use when creating a new page, fixing inconsistent headers, or migrating Service Map / Kubernetes / dashboard pages to the shared layout.

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Source SKILL.md: https://github.com/hyperdxio/hyperdx/blob/HEAD/.claude/skills/page-layout/SKILL.md

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Page layout and headers

Read agent_docs/page_layout.md before changing any page shell. It is the source of truth for API, examples, and migration steps.

Quick rules

Default for new pages: PageLayout with title, optional leading / actions, and content — only when the sticky bar is text-only (no inputs in that bar).
Sticky bar contains inputs (source pickers, SQL/search, sliders, time range, Run, etc.): do not use PageHeader / PageLayout title. The sticky row is for controls only. Put where you are in the breadcrumbs prop (renders inside the sticky PageHeader, above the toolbar) when the page lives under a hierarchy (e.g. Dashboards → Kubernetes); otherwise you may omit breadcrumbs and rely on <Head><title>, the sidebar active item, and the empty state copy.
Never duplicate location: do not set title="Kubernetes Dashboard" and breadcrumbs that repeat the same page name.
Never use <Text size="xl"> as the page title in the body.
Global controls (time range, Run, Save, sampling) go in actions, right-aligned. Context pickers go in leading (no title when those slots are used for inputs). Breadcrumbs use the breadcrumbs prop so they stay in the sticky header, not in content.
Full-height tools (maps, large charts): fillViewport on PageLayout.
Search / Chart Explorer: keep bespoke toolbars unless the task is explicitly to redesign them.

Workflow

Read agent_docs/page_layout.md.
Open a similar page already on PageHeader / PageLayout (e.g. AlertsPage.tsx, DBServiceMapPage.tsx, KubernetesDashboardPage.tsx).
Implement using @/components/PageLayout or @/components/PageHeader.
Preserve or add data-testid on the page root for E2E tests.
Run yarn lint:fix in the repo root when done.
If the page has E2E coverage, run the relevant spec under packages/app/tests/e2e/.

Imports

import { PageHeader } from '@/components/PageHeader';
import { PageLayout } from '@/components/PageLayout';

Reference implementations

Page	File	Pattern
List page	`AlertsPage.tsx`	`PageHeader` + `title` + `Container` (no inputs in header)
Tool page with inputs + hierarchy	`KubernetesDashboardPage.tsx`, `ClickhousePage.tsx`	`PageLayout` without `title`; `breadcrumbs` + `leading` + `actions` in one sticky header
Tool page (top-level)	`DBServiceMapPage.tsx`	`PageLayout` without `title`; `leading` / `actions` only; no duplicate breadcrumb unless you add a real hierarchy
Custom toolbar	`SessionsPage.tsx`	`PageLayout` + `header` = custom `PageHeader` `children` (single-row inputs, no `title`)
Custom title	`TeamPage.tsx`	`PageHeader` with `children` only