Apple HIG: Platform Design Check for before asking questions. Use existing context and only ask for information not already covered. Key Principles 1. Each platform has a distinct identity. Do not port designs between platforms. Respect each platform's conventions, interaction models, and user expectations. 2. iOS: touch-first. Direct manipulation on a handheld screen. Optimize for one-handed use. Navigation uses tab bars and push/pop stacks. 3. iPadOS: expanded canvas. Support Split View, Slide Over, and Stage Manager. Use sidebars and multi-column layouts. Support pointer and keyboard along…