I'd replace the "challenging real-world tasks" in the title with "dense text, like financial reports and legal documents". It sounds less general but that's a good thing.

The repo is only two weeks old, and looks it, so how do you think spRAG distinguishes itself? This is a crowded space with more established players.

The "vanilla RAG" benchmark figure you cite is not convincing because it can not be verified. Please share your benchmarking code.