A few questions about how browse.feddit.de works/updates

I really like the Lemmy Community Browser at browse.feddit.de for locating communities across instances.

When I first stood up my instance, I guess it was crawled and my community showed up there. Awesome!

I've since rebuilt on a new domain and federated again, and my old instance dropped off (as expected). However, a day or so later, my new instance still isn't showing up there. The new instance is known to join-lemmy.org and fediverse.observer, so it is discoverable.

I'm curious if anyone knows how often it updates and if that tool is based on a project I can clone to spin up another instance. I'm interested in both running a replica of it to act as another entry point as well as using it as a base to develop some quality of life enhancements. e.g. a click to subscribe option that ties into your home instance and does the initial search and subscribe steps.