Not today, but the architecture isn't fundamentally incompatible. The page grouping and seekable compression would translate well to browser fetch + range GETs. It would need a new storage backend targeting OPFS/fetch instead of S3/disk. I'm happy to discuss more if you'd like to open a Github issue - abstracting the storage API seems like a decent idea in itself.
correct it will be handled via backend which will just proxy requests to R2(its S3 compatible). i already have something working with vhttpfs but you have implemented some great ideas like optimizing request count instead of byte efficiency, i wanted something like that in vhttpfs but it will become another project for me.
I think it can be great frontend tool as well since you have decoupled storage with db engine.