Download htmx.org v1.9.10 into static/htmx.min.js and update all
references (layout.html, handlers.go fallback page, sw.js precache
list) to use the local copy. This enables the PWA to work fully
offline since the service worker can now cache htmx from the same
origin.
Bump service worker cache version to v2 so existing installations
pick up the new asset list.
Closesleeworks-agents/gitea-mobile#17
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>