If you hadn't already, I would have suggested vibe coding this. I've done a different thing also with OSM data (isochrone rather than point-to-point routing) a

If you hadn't already, I would have suggested vibe coding this. I've done a different thing also with OSM data (isochrone rather than point-to-point routing) and put it on github to avoid needing to care about bandwidth on my domain, because also around ten megabytes for Berlin's data, despite having a step to convert JSON to a much more compact form with only the data I needed: https://github.com/BenWheatley/Isochrone https://github.com/BenWheatley/Isochrone https://benwheatley.github.io/Isochrone/web/?region=berlin&node=557269&cycle=35&modes=walk%2Ccar https://benwheatley.github.io/Isochrone/web/?region=berlin&n...