Remaining tasks for stable release

What remaining tasks need to be done for the maintainers to consider this module to be stable?

I've added some items that I would consider to be important below. If a maintainer could chime in that would be appreciated so I have a target to work toward.

Remaining tasks

General:
📌 Implement validation tests Active
🐛 Loaded library cache is not invalidated when changing provider in settings Active
✨ Forbid direct access on the controller Active
📌 Automated Drupal 11 compatibility fixes for address_autocomplete Needs review

PostCH:
🐛 PostCH improve lookup functionality Active
🐛 PostCH API requests handling is outdated Active
📌 PostCH handle spatial character and include house number addition Active

User interface changes

API changes

Data model changes