insmaller 0.6.1

Config-driven installer: describe install steps in TOML and run them from one binary
insmaller-0.6.1 is not a library.

Standalone harness for the engine.

insmaller <key…> [--config F] [--catalog F] [--dry-run] [--json] insmaller install <key…> [--config F] [--catalog F] [--dry-run] [--json] insmaller uninstall <key…> [--config F] [--catalog F] [--dry-run] [--json] insmaller setup [--wizard F] [--catalog F] [--config F] [--answers F] [--dry-run] insmaller status [] [--config F] [--json]

insmaller is an installer: a bare insmaller <key…> (no recognized subcommand) defaults to install. uninstall runs each recipe's uninstall phase and clears its sentinels. setup runs the pages/wizard, then installs the selected keys (wizard string answers are exported to the env so prompt/save_input/EnvResolver pick them up). --answers makes setup fully unattended (non-blocking).