Bulk actions on digital products — delete, replace, and update files in bulk

Merchants with large catalogs need bulk operations across digital products: **Bulk file replacement:** Merchants managing 500+ product files updated quarterly need to replace all files at once based on matching file names/IDs — similar to Shopify's "Overwrite products with matching handles." Currently every file must be replaced individually which is not scalable. **Bulk deletion:** Ability to select and delete multiple digital products at once instead of one by one. Both operations would significantly reduce manual work for merchants with large content libraries.