Function setup_default 

pub fn setup_default() -> Result<(), LoggerError>

Initialise the global logger with default settings.

Respects environment variables:

• LOG_LEVEL or RUST_LOG: Log level
• LOG_FORMAT: Output format (json, text, auto)
• NO_COLOR: Disable coloured output
• LOG_THROTTLE_ENABLED: Enable log deduplication (default: false)
• LOG_THROTTLE_BURST: Token bucket burst capacity (default: 50)
• LOG_THROTTLE_RATE: Token recovery rate per second (default: 1.0)

Errors

Returns an error if the logger is already initialised.