Bug reports now bring the scene of the crime
Report a bug, and the issue that lands on GitHub now carries your browser, OS, viewport, and color scheme folded into a table of its own. Maintainers see your setup without you typing a word about it.

You type /bug to turn a draft into a bug report, describe what broke, and send it. The issue opens on GitHub, and above the credit line sits a folded Environment table. Expand it and there are your browser and version, your OS, your viewport, your pixel ratio, your language, whether you are in light or dark mode, and the page you were on.
Credit goes to cannonsh, who taught the composer to look around before it sends. It gathers seven facts, and the server accepts only those seven, each up to 100 characters. Backticks, pipes, and newlines get scrubbed before the rows go in, and there is no full user-agent string, timezone, or IP address in the table. The badge beside the command warns that the details are coming along for the ride.
One catch. The color scheme comes from your operating system's dark-mode preference, not the theme you chose on the site. Force the site to light while your machine is set to dark, and the issue still reports dark.