// Package log provides structured logging for ollie.
//
// The package supports log levels (debug, info, warn, error) and can
// be configured via environment variables or programmatically.
//
// # Usage
//
//	log := log.New("session")
//	log.Info("starting session %s", id)
//	log.Debug("verbose detail: %v", data)
//
// # Configuration
//
// Set OLLIE_LOG_LEVEL to control output: debug, info, warn, error.
// Default is info. Debug output is useful for development but verbose
// in production.
//
// # Output Format
//
// Messages include timestamp, level, logger name, and message:
//
//	2024-01-15T10:30:00 INFO  [session] starting session abc123
package log