I actually thought about that. Not a framework but an ultra-efficient web-server. Going reductionist, a static serving web-server is just a key-value storage accessible via HTTP.
So I can run a Python script that gathers all the key-value pairs (names and pages), makes an optimized search tree out of them and spawns is out as an LLVM sheet of code. Then I only have to embed it into a trivial HTTP "answering machine", assemble it all under the target architecture as part of the deployment - and that's it.
I have more fun things to do right now, but my hosting contract expires in a year or so so I'd look for the alternatives by then.