Production's Content-Security-Policy has no script-src, so it falls
back to default-src 'self' and blocks inline scripts. The inline head
script that applied the saved theme never ran on prod, leaving the
page on the system theme while the selector showed the saved choice.
Move it to resources/js/theme-init.js, built by esbuild alongside
app.js into a minified, source-mapped file loaded as a blocking script
in the head. ThemeSelector now also applies the saved colour scheme,
so the page and buttons can't disagree.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>