When the dashboard reloads because the build version hash changed, surface that
on the loading screen instead of the generic "Initializing dashboard..." so the
user understands why they bounced.
Carry the signal across the hard reload via a sessionStorage flag set in
versionCheck just before reloadOnce(), and consume-and-clear it once on the
loader's first render.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Builds now emit version.json + a __BUILD_VERSION__ define. The client
re-checks the remote version on visibilitychange/focus and reloads on
mismatch, so a backgrounded tab doesn't hit a 404'd hashed chunk and
surface "'text/html' is not a valid JavaScript MIME type" when opening
Settings. ErrorBoundary catches stale-chunk errors as a safety net.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
