Tests define the API for the config module:
- Config::load_with(path, home) / Config::load(path) read the TOML file
(database/web/state/backup sections per config.template.toml)
- empty strings resolve to built-in defaults: db port 3306, web port
8080, state dir $HOME/.config/rpn, backup dir <state>/backups
(backup follows an explicitly set state dir)
- port may be written as a TOML int or a string in real configs;
non-numeric strings are a ConfigError
- resolve_config_path(): --config flag > $RUSTYRPN_CONFIG >
cwd/config.toml; --env=dev|test only affects that last default slot
- Config::show() renders the effective config with the password masked
- Config::validate_database() requires host/user/name
Also adds the toml crate (forced by the TOML config decision).
jakob
a81dd6f543