Add python-blueprint badge

Author: johnthagen

README.md

@@ -7,6 +7,7 @@
 [![Nox][nox-badge]](https://github.com/wntrblm/nox)
 [![Ruff][ruff-badge]](https://github.com/astral-sh/ruff)
 [![Type checked with mypy][mypy-badge]](https://mypy-lang.org/)
+[![Python Blueprint][python-blueprint-badge]](https://github.com/johnthagen/python-blueprint)
 
 [github-actions-badge]: https://github.com/dantebben/nox-uv/workflows/CI/badge.svg
 [pypi-version-badge]: https://img.shields.io/pypi/v/nox-uv.svg
@@ -15,6 +16,7 @@
 [nox-badge]: https://img.shields.io/badge/%F0%9F%A6%8A-Nox-D85E00.svg
 [ruff-badge]: https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json
 [mypy-badge]: https://www.mypy-lang.org/static/mypy_badge.svg
+[python-blueprint-badge]: https://img.shields.io/badge/%F0%9F%97%BA%EF%B8%8F-python--blueprint-2dcf59.svg
 
 `nox-uv` is a simple drop-in replacement for [nox](https://nox.thea.codes/)'s `@nox.session` that
 installs dependencies constrained by [uv](https://docs.astral.sh/uv/)'s lockfile.