Add a visible feature freeze section near the top of CONTRIBUTING.md
so contributors see it before starting work. Fix "GATEHRED" typo in
the PR template.
* Add `select-none` and `cursor-default` to root to prevent selection and
hover on most items
* Lint
* refactor paths a bit
* format
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Co-authored-by: CJ Pais <cj@cjpais.com>