canonrs-server 0.1.0

CanonRS server-side rendering support
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id: loading_overlay
label: Loading Overlay
family: family-e-feedback
category: Display
intent: Block UI during async operations
description: Full loading overlay
composable: false
capabilities: OpenClose
required_parts: []
optional_parts: []
tags: ["loading-overlay", "loading", "overlay", "wait", "spinner", "block"]
keywords: 
pain: Loading states require manual visibility and aria synchronization
promise: Loading visibility and aria-busy managed automatically
why: |
  LoadingOverlayPrimitive maps LoadingState to visibility and ARIA attributes. Overlay visibility is derived automatically. This guarantees consistent loading feedback without manual logic.
rules: ["CR-001", "CR-004"]
use_cases: ["async operations", "page blocking"]
related: ["progress", "spinner", "skeleton", "pulse", "doc_progress"]
file: loading_overlay_ui.css
tokens: loading-overlay-*, motion-*, font-*
foundation: motion, z, blur
states: ["loading"]
island: loading_overlay_boundary.rs
pillar: progress
badges: ["SSR Safe", "Hydration Safe", "Token Driven", "Deterministic API", "Zero Drift", "Island Architecture"]
before: |
  // ❌ Typical
  view! {
    {if loading { view! { <div class="overlay">"Loading"</div> } }}
  }
after: |
  // ✅ CanonRS
  view! {
    <LoadingOverlay state=LoadingState::Loading>
      "Content"
    </LoadingOverlay>
  }
boundary_type: init
block: [card_block]
blocks_primitives: [center, stack]