Ensure Drupal 10.x / 11 compatibility

Problem/Motivation

The discovery notes point out that the contributed module was not fully Drupal 10 compatible and needed patches just to run on 10.2.x . Even after those fixes, media insertion sometimes fails, which is only partly solved on 10.2.12 and not working on Drupal 11.

Proposed resolution

Upgrade & declare compatibility

• Bump composer.json to drupal/core:^10.x.x || ^11.0 and add "core_version_requirement": "^10 || ^11" in info.yml.
• Run the module on Drupal 10.x.x and the current 11 to confirm it installs without missing-plugin or schema errors.

Remove deprecated API calls

• Scan with drupal-check / phpstan-drupal and replace APIs marked as removed in 10.x/11 (e.g. entityTypeManager()->getStorage() usage inside plugin constructors, deprecated annotation classes, legacy media_library.ui_builder services).
• Add backward-compatibility shims only where unavoidable.