Add web search so the agent can cite current sources (#159)

fix

Unify dataset tools into single comprehensive hf_inspect_dataset tool

Added 2 dataset tools, one to list rows, the other one to download the dataset

github tools updated

poc github tools

main agent search has better vibes

added the explore subagent, quality ok but not perf

ported the hf jobs tool to python

a working mcp integration

minimal impl. of the agent