ensure that a ty warning creates an error

Author: svlandeg

pyproject.toml

@@ -151,3 +151,6 @@ known-third-party = ["sqlmodel", "sqlalchemy", "pydantic", "fastapi"]
 [tool.ruff.lint.pyupgrade]
 # Preserve types, even if a file imports `from __future__ import annotations`.
 keep-runtime-typing = true
+
+[tool.ty.terminal]
+error-on-warning = true