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Passmark completed checkout like a real shopper. A Decimal oracle compared product page, cart, checkout, email, admin, API, invoice, locale, and inventory truth, then generated a DO NOT SHIP report when money drifted by even ₹0.01.

It's 4 AM. I have a daily tracker app running on localhost, a fresh Supabase test database seeded with fake data, and a Playwright suite I spent the last few hours writing. I'm not nervous about the results. I use this app every day. I built the gym module with a paranoid little EXIF guard that rejects photos older than 6 hours. I wrote the XP logic myself. I know where the rough edges are. The first test fails in 37 seconds.

At some point while building this test suite, I wrote the following as a test assertion: "The page does NOT show contents of /etc/passwd such as 'root:x:0:0' or any system usernames." No code. No selectors. No regular expressions. Just that sentence and an AI that knew exactly what to look for.

One AI wrote every line of my app. A different AI tested it. The tester found bugs the builder never knew it made. Then I fixed them — and the tester confirmed the fixes. This is that complete story.
