Product, business rules, data, security, performance, observability and user experience must tell the same story.
I start by identifying intent, business invariants and risks. Architecture, interface and optimization come next. The target is not “a page that works”, but a maintainable, observable and reversible system.
no hidden deletion
no trust in client input
no secret in frontend
no infinite scroll
no unsafe upload
no silent data loss
rollback documented
limits made explicitPredictable backend on shared hosting.
Transactions, indexes, integrity and search.
Progressive enhancement without a heavy framework.
Navigation and content remain available without script.
Grid, container queries and responsible motion.
Headers, audit, backup, rollback and static CI.
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