- Added new permission handling in `backend/handler/auth/dependencies.py` to support fine-grained, DB-backed permission checks.
- Enhanced user role update logic in `backend/endpoints/user.py` to prevent demotion of the last admin.
- Introduced `hidden_platform_ids` and `hidden_rom_ids` parameters in various database handlers to manage visibility based on admin settings.
- Created new endpoints for managing permission groups, user memberships, and hidden entities in `backend/tests/endpoints/test_permissions_admin.py`.
- Added tests for permissions visibility and CRUD operations in `backend/tests/endpoints/test_permissions_visibility.py` and `backend/tests/endpoints/test_permissions_me.py`.
- Updated archive handling in `backend/utils/archives.py` to improve error logging and timeout management during extraction.
The current implementation for some of the database handlers, where the
same method is used to retrieve either a single entity (when an `id` is
passed), a list of entities, or `None`, makes the typing and overall
design more complex.
This change simplifies database handlers, by having two separate methods
where appropiate:
* A method that receives an `id`, and returns either an entity, or `None`.
* A method that optionally receives filters, and returns (depending on
the current handler implementation) a list of entities, or a `Select`
object that allows chaining more SQLAlchemy operations.
