Revert v1.0.1 — self-update

What's new

• revert update — self-update to the latest release. Fetches the newest tagged
  release, moves the toolkit and its pinned components (thugkit + mods + NeverScript
  submodules) to it, rebuilds thugkit, and re-runs the build — preserving your Save/
  and never touching game data.

  ./revert update --check    # is a newer release available?
  ./revert update            # update + rebuild

• revert.conf.local — a gitignored local config override (sourced last) so your
  settings (HQ URLs, glyph style, custom GE_DIR, …) survive updates without conflicts.

Everything from v1.0.0 (three lanes, the QOL mod suite, Steam Deck support, acquire-hq,
custom tags) is unchanged. MIT. Bring your own THUG2 copy — ships tooling, never game data.