For Jekyll’s documentation we opted for the DocSearch service because GitHub Pages do not support this plugin by default.
The plugin is still in development and currently already handles indexation at build time, for the front-end you still have to use a library like InstantSearch. Maybe the plugin will allow easier integration in the future.
Looks great! Sorry for my late reply, been quite busy. I’d like to test it out on a project that justifies it. I’m doing my best to keep my themes working well both in and out of the GitHub Page ecosystem so I’m not so keen to add it to them, sorry.
The new plugin has been officially released, it has been tested by some members of the community so it’s already pretty solid. The indexation is now smarter and will save operations on your quota, that also makes updates faster. You’re encouraged to upgrade