Automated tests can't catch everything, and I want a written manual test script to walk through on launch day (and before any big announcement after). Look at my app and produce a click-by-click manual test script covering: 1. The money path: land on the site, sign up, confirm email, go through checkout with a real card I'll refund afterward, and confirm access is granted and a receipt arrives. 2. Every link in the nav, footer, and any emails: no 404s, no links to localhost or staging. 3. The core user flows: do each main thing my app exists to do, start to finish, as a brand new user who knows nothing. 4. The account lifecycle: change email, reset password, update billing details, cancel, and (in a test account) delete the account. 5. Mobile: the same critical flows on a phone-sized viewport. 6. The error states I can trigger by hand: a declined card, a duplicate email signup, a form submitted empty. 7. Anything specific to my app that you notice while scanning the routes and pages. Format it as a numbered checklist grouped by area, each step written plainly enough that a friend who's never seen the app could execute it: do X, expect Y. Include a column or marker for pass/fail and a place to note problems. Keep it runnable in under an hour. If it's longer, mark the steps that are absolute must-runs versus nice-to-haves. Save it as a markdown file in my repo so it lives with the project.