This started as my own sanity tool. Preflight.sh runs a suite of real-world checks (not unit tests) before deployment so you don’t find out about obvious flubs in prod. If you’ve ever shipped something only to realize minutes later “oh wait…”, this is for that exact moment. It scans your codebase for launch readiness before you ship. Preflight catches leaked secrets, broken configs, expired SSL, missing SEO tags, security gaps, and 70+ misconfigured services. Just run the command.