The post-deploy blank/slow load: new hashed chunks weren't in Cloudflare yet, so
the first visitor pulled them cold from the residential origin — AND the service
worker simultaneously precached ~30 of those cold assets (a request storm),
pushing past the 7s boot timeout.
* sync-static.sh now warms the CF edge cache (fetches every immutable asset
through the public domain) so the first visitor gets HITs, not cold-origin.
* Service worker no longer bulk-precaches on install (the browser already caches
immutable assets for a year); it caches the shell + assets lazily as used. No
more storm.
* Boot-recovery timeout 7s → 10s so a merely-slow load doesn't flash the card.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
thejayman77
370d62270b