I want a small smoke test suite I can run against my live site immediately after every deploy, to catch the 'deploy succeeded but the site is broken' case. Write a set of fast, read-only checks against the production URL: 1. The homepage returns 200 and contains expected markup (not an error page or a blank shell). 2. The signup and login pages load. 3. Any health check endpoint I have (or should have) returns healthy. If I don't have one, create it as part of this work: a simple endpoint that verifies the app can reach its database and returns 200 only if so. 4. Key public API endpoints respond with expected shapes. 5. Critical static assets (the main JS and CSS bundles) return 200 and aren't HTML error pages served with the wrong content type. Constraints: these tests must be strictly read-only. No signups, no writes, no test payments against production. If a flow can't be verified without writing, verify the page loads and leave the write-path testing to my pre-production suite. Make the suite runnable as a single command I can fire from my terminal, with a clear pass/fail summary and a non-zero exit code on failure so I could wire it into a deploy script later. When done, run it against my production URL (I'll provide it) and show me the results.