canonrs-server 0.1.0

CanonRS server-side rendering support
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id: collapsible
label: Collapsible
family: family-b-selection
category: Navigation
intent: Show and hide content sections
description: Collapsible section
composable: true
capabilities: OpenClose
required_parts: ["CollapsibleTrigger", "CollapsibleContent"]
optional_parts: []
tags: ["collapsible", "collapse", "expand", "hide", "toggle"]
keywords: 
pain: Collapsible sections lose sync between trigger and content state
promise: Trigger and content state always synchronized via shared visibility state
why: |
  CollapsiblePrimitive shares VisibilityState across trigger and content. This ensures both reflect the same open/closed state. The contract eliminates manual sync logic.
rules: ["CR-001", "CR-004"]
use_cases: ["faq sections", "expandable panels"]
related: ["accordion"]
file: collapsible_ui.css
tokens: collapsible-*, space-*, motion-*
foundation: spacing, motion
states: ["open", "closed"]
island: collapsible_boundary.rs
pillar: accordion
badges: ["SSR Safe", "Hydration Safe", "Token Driven", "Deterministic API", "Zero Drift", "Island Architecture"]
before: |
  // ❌ Typical
  view! {
    <button on:click=toggle>"Toggle"</button>
    {if open { view! { <div>"Content"</div> } }}
  }
after: |
  // ✅ CanonRS
  view! {
    <Collapsible>
      <CollapsibleTrigger>"Toggle"</CollapsibleTrigger>
      <CollapsibleContent>"Content"</CollapsibleContent>
    </Collapsible>
  }
boundary_type: init
block: []
blocks_primitives: [stack]