The palette and light/dark choice now live in the account's JMAP Files
(ihasmail/settings.json), the same file and keys INBUXA webmail uses, so
the theme follows the user across devices and both apps. The admin
reads it at sign-in and writes only palette, mode and the derived
legacy theme, after a fresh read, keeping every other key. A palette
change keeps the stored mode. localStorage stays as the first-paint
cache.
jcoffey-dev
2e02532279