docs: list team hf username

Co-authored-by: Codex <codex@openai.com>

README.md

@@ -48,6 +48,10 @@ task? The answer becomes a field notebook, not a benchmark.
 - Social post draft: [`docs/social-post.md`](docs/social-post.md)
 - Public X post: https://x.com/JacobLinCool/status/2066160425952334155
 
+## Team
+
+- HF username: [@JacobLinCool](https://huggingface.co/JacobLinCool)
+
 ## Who it is for
 
 Trace Field Notes is for developers, researchers, and hackathon builders who use