Configure production deployments to use LOG_LEVEL=error for minimal log volume.
- Add LOG_LEVEL=error to docker-compose.yml environment
- Add LOG_LEVEL: error to K8s ConfigMap
- Update .env.example with dev/prod LOG_LEVEL guidance
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
- Configuration Reference now shows only PORT/DATABASE_PATH/MASTER_KEY_PATH as env vars
- All other settings documented as Web UI configuration
- Installation steps simplified (no more .env editing for runtime config)
- Docker run command updated to use volume mount instead of --env-file
- k8s section simplified: only GITEA_ACCESS_TOKEN in Secret