Alternative docs theme experiment (with builtin dark mode)

Hi,
I’ve been using Syncthing recently and spent some time browsing the documentation. I noticed the docs are still using an older Sphinx theme, which is, of course, completely fine and functional. But I have also noticed a few tickets asking for dark mode.

Recently, I have created a new Clarity theme for Sphinx. Out of curiosity, I made a small fork where I tried rendering the same documentation with the Clarity theme, just as a side experiment.

I’m not suggesting any change, but I thought I’d share the preview in case you find it interesting or useful to look at.

– new docs: https://showcase.readcraft.io/syncthing/ (version switching doesn't work because I have used only the latest version for this experiment)
– fork: https://github.com/ReadCraft-io/showcase-synching

I could send a PR. Or, if this isn’t something you want to consider, feel free to ignore this — I just wanted to share the experiment.

Thanks for creating Syncthing 🙏

Review the linked preview and the ReadCraft-io/showcase-synching fork to understand the proposed Sphinx theme experiment. Compare it with the current documentation setup; the issue names no file, test, or acceptance criterion, so clarify whether a theme integration is wanted before defining what done means.