Config
Magento\Theme\Model\ResourceModel\Design\Config
What it does
This resource model manages database operations for the design configuration grid table in Magento 2's theme system.
Developers use this class to interact with the design_config_grid_flat table, which stores flattened design configuration data for various store scopes.
It provides the foundation for loading, saving, and deleting design configuration records used in the admin panel's design configuration interface.