muxr v2.1.0 Config-drive resolver: the layout is now data, not compiled-in. - feat: [layout] config struct (campaigns_dir, campaign_file, log_file, archive_dir, switchboard_slug); each default reproduces the built-in 2-level model, so [layout] is a non-breaking override. - refactor: layout-dependent primitives + compose_launch_command read config.layout end-to-end; retired the delegating free-fns and the ARCHIVE_DIR / SWITCHBOARD constants. No behavior change at default layout.