Add a dark mode to the dashboard

[dchacke]

Donating some tokens so my eyes don’t hurt looking at the dashboard past 10pm… Here’s what my clanker wrote:

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The dashboard now switches to a dark theme when the operating system is in dark mode. Light mode looks the same as before.

How

A prefers-color-scheme: dark media query at the end of _style.html.erb remaps the color utilities the views already use to darker shades from the Tailwind palette. It also sets color-scheme: light dark, so scrollbars and other browser-drawn controls match.

I went this way rather than adding dark: variants to the markup because the backtrace’s Application/Full toggle swaps text-blue-500 and text-gray-500 in JavaScript. A permanent dark:text-gray-400 on those buttons would override the selected one’s blue. With the remap, no view or script changes.

Screenshots

Testing

• Looked at the error list, the resolved tab and the error page with a full backtrace, in dark and light mode.
• bundle exec rake test passes.

🤖 Generated with Claude Code