#10054 chore: Merge from `main` Pull request opened by ReubenFrankel SSIA Summary by Sourcery Propagate environment overrides from parent plugins to inherited plugin settings services and document the reference section entry point. Bug Fixes: • Ensure inherited plugin settings services include environment overrides from parent plugins when inherit_from is used. Enhancements: • Refine plugin settings service factory typing and environment fixture annotations in tests. • Add a dedicated test verifying isolation and precedence of inherited env_override behavior. • Convert the reference index documentation to a Markdown file and refresh its content. • Add a new contributor to the project metadata. Documentation: • Add a new reference index page linking to core Meltano reference documentation sections. Tests: • Extend plugin settings tests to cover inherited env_override isolation and inheritance semantics. Chores: • Update contributor listings to include a new contributor. meltano/meltano