Run the asset_pipeline convention linter (`scripts/lint_conventions.cr`) — Crystal-side runner that enforces Phase 10 Family 1 naming rules across src/, samples/, and spec/. Use before commit, in CI, or when reviewing a PR.
Build cross-platform apps with UI::App + UI::Screen + UI::Controller + UI::ActionDispatcher + UI::FormState — route declarations, native action dispatch, Amber web integration, and the static-site web target.
The developer-facing guide to building Apple UI (iOS 26, iPadOS 26, macOS 26) with asset_pipeline's UI::View system. Backed by the Apple HIG corpus and validated by macOS + iOS screenshots. Answers "I want to show X — what component, what args, what HIG says."
Complete catalog of Android Jetpack Compose and Material Design 3 components. Covers M3 Expressive (2025), gesture system, graphics/drawing, navigation patterns, theming, and mapping guidance for Crystal cross-platform UI integration via JNI.
Full Apple Human Interface Guidelines corpus packaged offline as searchable markdown. Covers iOS, iPadOS, and macOS guidance for every HIG page, with cross-referenced links, downloaded illustrations, and a tag index. Use as the authoritative design reference when building native UI with asset_pipeline.
Comprehensive cross-platform UI component mapping matrix showing how every common UI pattern maps across Crystal UI::View, SwiftUI, UIKit, AppKit, Jetpack Compose, Android Views, and Web HTML/CSS. Implementation priority guide for expanding the asset_pipeline cross-platform component system.
Architecture patterns and lessons learned from Flutter's widget system, adapted for Crystal's native-rendering approach. Covers the three-tree model, constraint-based layout, platform adaptation, and key differences from asset_pipeline's PlatformVisitor approach. Guides architectural decisions for expanding the cross-platform component system.
Survey of graphics and rendering APIs for cross-platform 2D/3D graphics in Crystal. Covers WebGPU/wgpu-native, Metal 4, Vulkan/MoltenVK, Skia, Filament, and OpenGL ES. Includes FFI feasibility assessment. STUB — implementation deferred, research preserved.