It is surprising that weather balloons don't have ADS-B out (or did this ballon have that and something about the system didn't work?). If it did work, ADS-B would have made this collision very avoidable.
Note that this one isn't open source: https://github.com/sqliteai/sqlite-vector/blob/main/LICENSE....
The announcement says:
> We believe the community could benefit from sqlite-vector, which is why we’ve made it entirely free for open-source projects.
But that's not really how this works. If my open source projects incorporate aspects of this project they're no longer open source!