Replace plural pronouns (we, our, us) with singular/project voice throughout documentation files to represent a singular developer perspective. Changes: - CONTRIBUTING.md: Replace "We are" with "This project is", "We use" with "This project uses", "our" with "the" - README.md: Replace "our" with "the", add OS to bug report checklist - docs/VERSION_HISTORY.md: Replace "we reset" with passive voice "the version was reset"