* feat: add stable and beta Homebrew channels
* fix: align beta formula with tap conventions
* fix: use dedicated token for Homebrew PRs
* chore: minimize release token permissions
* docs: record Homebrew token setup
* docs: keep Homebrew automation token long-lived
* fix(verify): assert channel versions and prove homebrew coexistence
The six-channel verifier previously ran `dws version` without comparing
it to the version each channel advertises, so a stale or wrong binary
still reported PASS. It also uninstalled stable before installing beta,
which could not prove the keg-only beta coexists with stable.
- smoke() now takes an expected version and fails the channel on mismatch
- npm/homebrew derive the expected version from the package manager;
curl/upgrade derive it from the latest GitHub release tag
- homebrew installs keg-only beta while stable stays installed, then
asserts stable's version, binary SHA and PATH link are unchanged
- cleanup uninstalls both script-installed formulae, still refusing to
touch a pre-existing user install
- add regression tests for version assertion and coexistence semantics
* style(formula): satisfy brew style for stable and beta formulae
- reword desc so it no longer starts with the formula name
- drop the unnecessary `require "fileutils"` and use the mixed-in cp_r
instead of the FileUtils. qualifier
* fix(verify): compare channel versions exactly
* fix(homebrew): keep generated formulae style-clean
* fix(homebrew): sync formulae with latest releases
github-actions[bot]