* chore(labrinth): fix typos, simplify out `remove_duplicates` func
* fix(labrinth): implement `capitalize_first` so that it can't panic on wide chars
* chore(labrinth): refactor out unneeded clone highlighted by nightly Clippy lints
* chore(labrinth): simplify `capitalize_first` implementation
* fix(labrinth): preserve ordering when deduplicating project field values
This addresses an unintended behavior change on
157647faf2778c74096e624aeef9cdb79539489c.
* fix(labrinth/tests): make `index_swaps` test run successfully
I wonder why we don't run these more often...
* refactor: rename `.env.example` files to `.env.local`, make local envs more consistent between frontend and backend
* chore(labrinth/.env.local): proper email verif. and password reset paths
