During September 2025, Diogo Souza focused on enhancing the developer experience in the defold/defold repository by improving documentation around HTTP API port configuration. He authored detailed Markdown guides explaining new configuration options, including usage of the CLI and the .internal/editor.port file, aiming to streamline onboarding and reduce misconfiguration risks. Diogo also updated the http-api.md documentation to reflect these changes and improved repository hygiene by refining the .gitignore to exclude the .idea directory. His work demonstrated a methodical approach to documentation and repository management, leveraging his skills in Markdown and documentation to address practical developer needs without direct code changes.