-- 'tokens', 'admin-dashboard', and 'admin-product-editor' are no longer
-- customizable (see PageStyle::CUSTOMIZABLE_PAGES -- design.php's per-page
-- upload panels only cover the two frontend content pages now; colors/fonts
-- are folded into those instead of having their own separate upload, and
-- the admin panel is never themed via upload, only via the built-in
-- Default/Light/Steam palettes). Any admin-uploaded custom CSS previously
-- saved for these three keys is now permanently unreachable -- clean it up
-- rather than leave dead rows behind.

DELETE FROM page_styles WHERE style_key IN ('tokens', 'admin-dashboard', 'admin-product-editor');
