How I shipped the rewriter side of an AI tell detector in 30 minutes (Claude + Next.js + Vercel)

Yesterday I shipped a free detector for the 12 most reliable AI writing fingerprints. The story behind it: my reddit account got 2 public "all comments are AI generated" callouts in one day. Mods removed 3 posts. I was running everything through Claude. The em-dashes and "delve" gave me away in seconds. Detector traction was fine. 100+ scans day one, sat at 12 page views from a Dev.to post overnight. But every single piece of feedback I got was the same: "ok cool, now how do I fix it without rew