also update pyproject.toml

AGENTS.md

@@ -16,5 +16,5 @@
 - Health probes log spawn command, args, PYTHONPATH, and cwd; use Space logs to debug import issues.
 
 ## When changing dependencies
-- Update `requirements.txt` and the Dockerfile install layer together; avoid drift.
+- Update `requirements.txt` and `pyproject.toml` and the Dockerfile install layer together; avoid drift. These files exist on a per-project level (mcp/ and demo/), be sure to update the correct ones.