Generates a Meta Commerce Manager product catalogue feed from your OpenCart 4 catalogue as RSS 2.0 with the g: namespace: g:id, g:title, g:description, g:link, g:image_link, g:additional_image_link, g:price, g:sale_price, g:availability, g:condition, g:brand, g:gtin, g:mpn and g:product_type. Availability uses Meta's space separated values. Identifiers are read from OpenCart 4.1's product_code table and from the legacy product columns, whichever is present. Specials come from product_discount rows, prices are converted into the feed currency and can include tax, and products are read from the database in batches of 250 so large catalogues do not exhaust memory. The feed route is guarded by a token and returns 404 without it. Add the URL as a scheduled data feed in Commerce Manager.