Changed paths:
M .github/workflows/test-installer.yml
M tests/conftest.py
Log Message:
-----------
Tests: run arm64 CI natively, log msiexec failures, accept arm64/x86 build names
On windows-11-arm uv picked an x86_64 CPython, so the tests drove Windows
Installer from an emulated process; use the image's native arm64 Python.
msiexec now writes a verbose log whose tail is printed on failure.