Worked on the home-assistant/developers.home-assistant repository to update contributor documentation, focusing on the transition of the default branch name from 'main' to 'dev'. Addressed the need for clear onboarding by revising Markdown-based guides, ensuring contributors target the correct branch for pull requests. Emphasized collaboration and version control best practices throughout the documentation changes, aiming to reduce confusion and streamline the contribution process. The update improved alignment between repository standards and contributor workflows, minimizing setup friction for new and existing developers. No bugs were addressed during this period, with efforts concentrated on documentation quality and process clarity using Markdown and Git.