canonrs-server 0.1.0

CanonRS server-side rendering support
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id: page_header
label: Page Header
family: family-h-layout
category: Display
intent: Page title and actions bar
description: Page header with title and actions
composable: false
capabilities: 
required_parts: []
optional_parts: []
tags: ["page-header", "title", "heading", "actions", "breadcrumb"]
keywords: 
pain: Page headers mix title, actions and breadcrumbs inconsistently
promise: Header structure enforced with explicit semantic regions
why: |
  PageHeaderPrimitive defines structured parts like title, description and actions. Each region is explicitly declared. This guarantees consistent layout composition across pages.
rules: ["CR-001", "CR-004"]
use_cases: ["dashboards", "admin pages"]
related: ["card", "resizable", "scroll_area", "aspect_ratio", "toolbar", "separator"]
file: page_header_ui.css
tokens: page-header-*, space-*, font-*, border-*
foundation: spacing, border, typography
states: []
island: page_header_boundary.rs
pillar: layout
badges: ["SSR Safe", "Hydration Safe", "Token Driven", "Deterministic API", "Zero Drift"]
before: |
  // ❌ Typical
  view! {
    <div class="header">
      <h1>"Title"</h1>
    </div>
  }
after: |
  // ✅ CanonRS
  view! {
    <PageHeader>
      <PageHeaderContent>
        <PageHeaderTitle>"Title"</PageHeaderTitle>
      </PageHeaderContent>
    </PageHeader>
  }
boundary_type: passthrough
block: []
blocks_primitives: [flex, stack]