Automatically clean up expired content based on standard Drupal date fields.
### Features
* **Per-Content-Type Configuration**: Independent settings for each content type.
* **Core Date Support**: Uses standard `created` and `changed` dates—no custom fields needed.
* **Flexible Retention**: Set periods from 1 week to 2 years.
* **Status Filtering**: Clean all content, or target only published/unpublished items.
* **Audit Ready**: Comprehensive logging of all cleanup operations.
