On Windows, HOME is often unset. The CLI crashed at startup with
'error: io error: HOME is not set' because three paths only checked
HOME:
- config_home_dir() in tools crate (config/settings loading)
- credentials_home_dir() in runtime crate (OAuth credentials)
- detect_broad_cwd() in CLI (CWD-is-home-dir check)
- skill lookup roots in tools crate
All now fall through to USERPROFILE when HOME is absent. Error message
updated to suggest USERPROFILE or CLAW_CONFIG_HOME on Windows.
Source: MaxDerVerpeilte in #claw-code (Windows user, 2026-04-10).