The Blade was using Tailwind utility classes (text-gray-900,
dark:text-gray-100, bg-emerald-100, etc.) but those only end up
in the host app's compiled CSS if the host's tailwind.config.js
content paths include vendor/d3vnz/issuetracker/resources/views.
Most consuming v3 apps don't, so dark-mode left the title text
unreadable (light text was the only fallback).

Now the Blade ships its own scoped <style> block with CSS
variables that flip on .dark or [data-theme="dark"]. Badge colours
are inline styles (don't depend on host theme). Result: works on
any host regardless of their Tailwind setup.