Function get_cli_configuration 

pub fn get_cli_configuration() -> Result<Config, MantaError>

Load cli.toml. Fails loudly if the file is missing; the error message includes a minimal example and (when a legacy config.toml is detected) a field-by-field migration mapping.

Reads the file at get_cli_config_file_path and layers MANTA_*-prefixed environment variables on top (env wins).

Errors

• MantaError::NotFound when the resolved config file does not exist on disk; the message embeds CLI_CONFIG_SAMPLE-equivalent guidance.
• MantaError::MissingField if the resolved path is not valid UTF-8 (required by the underlying config crate).
• MantaError::ConfigError on TOML parse, env-var type-coercion, or builder failures.