1.9.0

• Changed: the GitHub Releases self-update mechanism (previously FAUC_GitHub_Updater) is now provided by the shared lunaluna/l2d-wp-github-update-lib library, so the same update/release logic can be reused across this author's other plugins instead of being copy-pasted. The existing FAUC_github_release_cache transient key and fauc_github_updater_* filters keep working unchanged.
• Added: the main controller class (FAUC_Auto_Update_Controller), which had no unit test coverage since the plugin's first release, now has regression tests for domain-pattern matching, core major/minor update classification, and the auto_update_core_major option parsing.
• Changed: the release workflow now calls a shared reusable GitHub Actions workflow instead of duplicating the tag/version-check/build/publish steps in this repository.