A site that looks finished and a site that works are different things. The gap between them is full of dead links, forms that go nowhere, and checkouts that fail on the one device you didn't test.
The gauntlet
Before any build reaches you, it runs through an automated gauntlet in a real headless browser. Every route is loaded. Every link is followed. Every form is submitted. Every checkout path is exercised end to end.
- Broken links and 404s are caught before they ship.
- Forms are submitted with test data to confirm they reach an inbox.
- Console errors fail the build instead of silently shipping.
- Checkout flows are walked through to the confirmation screen.
If anything fails, the build doesn't ship — it resumes from where it stopped and tries again. By the time you open the preview, the boring parts are already proven.
The goal is a launch day with nothing to discover.