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Load the early theme script from a file so the CSP allows it

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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>
This commit is contained in:
Jonny Barnes 2026-11-07 15:33:13 +00:00
commit 7dbf4a3311
Signed by: jonny
SSH key fingerprint: SHA256:CTuSlns5U7qlD9jqHvtnVmfYV3Zwl2Z7WnJ4/dqOaL8
1 changed files with 31 additions and 13 deletions
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12
resources/js/theme-init.js Normal file
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@ -0,0 +1,12 @@
/*
* Apply a saved theme choice before first paint to avoid a flash of the system theme.
* Loaded as a blocking external script (not inline) so it passes the site's CSP.
*/
try {
const theme = localStorage.getItem('theme');
if (theme === 'light' || theme === 'dark') {
document.documentElement.style.setProperty('color-scheme', theme);
}
} catch {
/* storage unavailable, fall back to the system theme */
}