Generates a Pinterest Catalogs data source from your OpenCart 4 catalogue. Pinterest consumes the Google Shopping RSS format, so the feed is RSS 2.0 with the g: namespace: g:id, g:title, g:description, g:link, g:image_link, up to ten g:additional_image_link entries, g:price, g:sale_price, g:availability, g:condition, g:brand, g:gtin, g:mpn, g:product_type (the full OpenCart category path) and an optional g:google_product_category. Availability uses Pinterest's space separated values. Identifiers are read from OpenCart 4.1's product_code table and from the legacy product columns, whichever the schema actually has. 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 straight to a temp file that is atomically renamed, so large catalogues do not exhaust memory. Text is CDATA wrapped and stripped of characters XML cannot carry. The feed route is guarded by a token and returns 404 without it. Claiming your site and adding the data source happens in Pinterest Business.