Resolves #8689 For various reason, ghostty wants to have a unique file extension for the config files. The name was settled on `config.ghostty`. This will help with tooling. See #8438 (original discussion) for more details. This PR introduces the preferred default of `.ghostty` while still supporting the previous `config` file. If both files exist, a warning log is sent. The docs / website will need to be updated to reflect this change. > [!NOTE] > Only tested on macOS 26.0. --------- Co-authored-by: Mitchell Hashimoto <m@mitchellh.com>