Summary

The console sink log level is hardcoded to INFO in DEFAULT_SINKS. Docker users cannot tune log verbosity without modifying a YAML config file or Python code. A simple env var would allow docker compose users to control console output level.

Scope

• Add SYNTHORG_LOG_LEVEL env var support in configure_logging() or create_app()
• Override the console sink's level when the env var is set
• Valid values: debug, info, warning, error, critical (case-insensitive)
• Default: info (current behavior)
• Add to docker/.env.example with a comment
• File sink levels remain independent (configured via LogConfig)

Acceptance Criteria

• SYNTHORG_LOG_LEVEL=debug produces debug output on console
• SYNTHORG_LOG_LEVEL=warning suppresses info/debug on console
• Invalid values log a warning and fall back to INFO
• File sink levels are unaffected by this env var
• Documented in .env.example