* fix(engine): Index UserSessions columns for cleanup

* chore: update CHANGELOG

* chore: reword CHANGELOG

* fix: use improved index, update schema

* chore: migration version

* chore: lint

* chore: gen

* chore: lint migration

* fix: schema doesn't need `CONCURRENTLY`

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Co-authored-by: mrkaye97 <mrkaye97@gmail.com>