Steer agent to HF kernels instead of pip install flash-attn (#204)

fix: route all HF token usage through session.hf_token from OAuth

rewording

v3 prompt and tool desc rework

added whooooshing to api spec

file refactor, still works

pre simple impl

whoosh impl for docs search

integrated hf skills into the prompts

removing extra prints

main agent search has better vibes