The reliability work nobody sees

Spent time this week on the kind of work that never gets a feature page. Idempotency keys on every Stripe PaymentIntent so a network retry cannot create a duplicate charge. Webhook deduplication using Stripe event metadata so a retried webhook does not send a second confirmation email. A lazy Prisma client that only connects to the database at runtime, not at build time, so CI can build the app without a live database connection. Notification guards that check whether a client has actually signed up for the portal before emailing them. Nobody opens the site and notices any of this. That is the point. Reliability is invisible when it works.