macOS Human Interface Guidelines Mac apps serve power users who expect deep keyboard control, persistent menu bars, resizable multi-window layouts, and tight system integration. These guidelines codify Apple's HIG into actionable rules with SwiftUI and AppKit examples. --- 1. Menu Bar (CRITICAL) Every Mac app must have a menu bar. It is the primary discovery mechanism for commands. Users who cannot find a feature will look in the menu bar before anywhere else. Rule 1.1 — Provide Standard Menus Every app must include at minimum: App , File , Edit , View , Window , Help . Omit File only if the…