Identify large disk usage on macOS, propose a cleanup plan, and perform safe disk cleanup using Trash (not rm) for common heavy locations like ~/Library, Application Support, Developer/Xcode caches, simulator devices, device support, media app downloads (Podcasts/Prime Video), browser caches (Brave), and Claude VM bundles. Use when the user asks to find largest files/folders, reduce disk usage, or clean caches on macOS.