Configuration loading
Directory resolution
User-wide paths are resolved using the directories crate, which handles XDG Base Directory conventions automatically. If XDG environment variables are set, they are respected; otherwise paths fall back to ~/.symposium/.
See the configuration reference for the full resolution table.
Config loading
The user config (~/.symposium/config.toml) is loaded once at startup into the Symposium struct. If the file is missing or empty, defaults are used. If parsing fails, a warning is printed and defaults are used.