pub fn get_config_path() -> PathBufExpand description
Get the path to the configuration file.
Resolution order:
$GW_CONFIG_HOME/config.json— test / CI override; never set in production.$HOME/.config/git-worktree-manager/config.json— standard path.
The $GW_CONFIG_HOME escape hatch exists because dirs::home_dir() on
Windows uses a Windows API call that ignores the HOME / USERPROFILE
env vars, so integration tests cannot redirect config I/O through a
tempdir without an explicit override.