Right now, you can enable reactions on the main post:

However, I'd like to expose only voting on the main post as it makes for a simpler, less distracting UI (no emojis). I'm referring to this button highlighted in yellow, which is currently not exposed anywhere on the Giscus UI:

This may be blocked by #31, but I don't know if the main post is also affected by this bug.

The UI could be something like this, where the message is customizable by the website administrator (as you may use different terminology depending on whether it's a blog or documentation site):

For context, this is something I'm exploring for https://github.com/godotengine/godot-docs-user-notes.