Write in a {{tone}} tone for {{target_audience}}. Design style: {{visual_style}}. Build a production-quality floating action button menu component for SwiftUI. Cover: visual design, props/parameters interface, states to handle, implementation guide (structure, animation details, accessibility, performance optimization), testing checklist, and 3 usage examples. Maximum length: 1500 words. Skip any section if information is unknown. Paste any relevant background information after these instructions before running.