Add a table of contents, a quick start, a full configuration reference
with defaults, the environment variables, a table of files and
directories, a command overview, details on rule matching and how
option layers combine (with real --dry-run output), recipes, a
troubleshooting table, and the project layout. Update How it works for
sftp, scp, tunnel, and forwards.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
