Bug fixes:

• Fixed test builds with installed Eigen 5 by improving Eigen3 CMake package detection.
  #6036

• Fixed move semantics of scoped_ostream_redirect to preserve buffered output and avoid crashes when moved redirects restore stream buffers.
  #6033

• Fixed py::dynamic_attr() traversal on Python 3.13+ to correctly propagate PyObject_VisitManagedDict() results.
  #6032

• Fixed std::shared_ptr<T> fallback casting to avoid unnecessary copy-constructor instantiation in reference_internal paths.
  #6028

CI:

• Updated setup-uv to the maintained GitHub Action tag scheme.
  #6035

• Updated pre-commit hooks.
  #6029

• Updated GitHub Actions dependencies, including actions-setup-cmake and cibuildwheel.
  #6027