Rewrite docs/USER_GUIDE.md, docs/DEPLOYMENT.md, docs/DEPLOY_FROM_SCRATCH.md,
and DEPLOYMENT_CHECKLIST.md to drop AI-generated tells: bold-colon feature
walls, Title Case headings, em dashes, and rule-of-three lists. Facts
(commands, paths, ports, URLs) are unchanged. Historical scratch docs
(PHOTO_VIEWER_*, FIX_*, *_REVIEW, *_PLAN, etc.) and the cPanel-specific
runbooks are untouched.
ilia