Release 1.14.0

Documentation

• Add an optional uv contributor quickstart with editable installation and full-suite or single-country tests
  (#473).

• Check published PyPI packages with uv on Python 3.9 and 3.14 on demand, and document the post-release check
  (#472).

• Add a runnable uv script and isolated wheel-install CI checks for the script and README one-liner
  (#471).

• Document project, virtual-environment, one-off and standalone-script usage with uv in the README
  (#470).