References cover views/modifiers, navigation, SwiftData, state management, Liquid Glass across platforms, and App Intents in depth, plus Apple Human Interface Guidelines (HIG) rules with source URLs: accessibility (Dynamic Type to AX5, VoiceOver, contrast, hit targets, Reduce Motion/Transparency), right-to-left, modality/sheets/alerts/onboarding, system surfaces (widgets, Live Activities, notifications, App Shortcuts/Siri/snippets), and iPhone Duo.

Visual specs come from the design-ios handoff when one exists; this skill implements and verifies them. Best practices: extract subviews once a view body mixes responsibilities or stops reading at a glance, compose with ViewBuilder and modifiers, always include #Preview, use system colors (custom colors need light, dark and increased-contrast variants), label every icon-only control, and adapt layout by size class.

SwiftUI Core

SwiftUI fundamentals shared across all Apple platforms.

Agent Workflow (MANDATORY)

Before ANY implementation, spawn 3 agents in parallel, one Agent call each with a name:

1. fuse-ai-pilot:explore-codebase - Analyze existing SwiftUI patterns
2. fuse-ai-pilot:research-expert - Verify latest SwiftUI docs via Context7/Exa
3. mcp__apple-docs__search_apple_docs - Check SwiftUI view patterns