release_web.py --deploy rsyncs the site to the VPS, where tools/web/serve.py (pm2's
snowbound-web) has index.html checked on every load and keeps b/HASH/ for good; the last
three builds stay for pages still running them. A page whose cached module and JavaScript
don't link reloads once afresh. The copyparty share's web/ folder is no longer published.

Assisted-by: claude-opus-5.5