Use when Codex needs to choose, inspect, or troubleshoot this user's local shell behavior, Vanilla dotfiles and Blend-managed config, filesystem search tools, language runtimes, package managers, PATH/toolchain issues, or platform CLIs on their macOS arm64 and Arch Linux x86_64 machines. Trigger for questions or tasks involving elvish, nushell, zsh/bash/sh availability, Vanilla dotfiles, blend view, proto, rust/cargo paths, Homebrew/pacman language tools, gh, glab, twg, pup, sentry, ripgrep, fd, or machine-specific command selection.
2026-07-08