Match CI + runtime target exactly — both run Python 3.14, so the
package metadata signals consumers that we don't test against 3.12/3.13.
uv.lock is tracked so the test job's `uv venv` resolution is
reproducible (currently the test job installs the editable package
without consulting the lockfile; future work could wire `uv sync` in).
Lockfile resolves 179 packages against Python 3.14.4.
ci-requirements.md updated to drop the prior "permissive lower bound"
caveat.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
