Apply chezmoi dotfile changes to the home directory and reload the affected tool. Use this whenever you have edited a config file in this chezmoi-managed dotfiles repo and the changes need to be reflected on the system. Always trigger this after editing any file under private_dot_config/, Brewfiles, or other managed config files — even if the user doesn't explicitly ask to apply. Handles `chezmoi apply` plus tool-specific reload for AeroSpace, tmux, and fish.