v0.2.3

Added

• Turnkey daemon setup: mta install --init writes a default config first if
  none exists; the install scripts gain --with-service (-WithService on
  Windows) to configure + install + start the service in one step; new
  scripts/uninstall.sh / scripts/uninstall.ps1 for a clean removal (service +
  binary, --purge also wipes config/data).

Changed

• scripts/build-all.sh now always cleans dist/ before building, so stale or
  renamed artifacts never linger.
• start/stop/restart give a clearer "is the service installed? run
  mta install" hint on failure; install is idempotent (restarts if the
  service already exists).

Full Changelog: v0.2.2...v0.2.3