Fuentes oficiales consultadas el 4 y 5 de noviembre de 2026.

S1. Stripe / Fulfillment
https://docs.stripe.com/checkout/fulfillment

S2. Google / MailApp
https://developers.google.com/apps-script/reference/mail/mail-app

S3. Google / Web apps
https://developers.google.com/apps-script/guides/web

S4. Cloudflare / Worker first
https://developers.cloudflare.com/workers/static-assets/routing/worker-script/

S5. OpenAI / Plugins
https://developers.openai.com/plugins/concepts/plugins

S6. Google / Cuotas
https://developers.google.com/apps-script/guides/services/quotas

S7. W3C / Contraste del texto
https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum.html

S8. Chrome / Movimiento
https://developer.chrome.com/docs/modern-web-guidance/guides/ui-behaviors/motion