Diagnose and maintain Apple Silicon Macs safely. Use when Codex needs to investigate a slow Mac, low SSD space, memory pressure or swap, high CPU load, background/login items, Time Machine local snapshots, Xcode and Simulator data, Homebrew, Docker, Podman, Apple Container, Parallels, UTM, other local VMs, large Library folders, or MacBook battery health; rank cleanup opportunities; or carry out a specifically approved cleanup. Default to a read-only audit, detect volatile CLI capabilities from local help before use, and require explicit approval before any deletion or configuration change.
