ci(windows): build and publish PyPI wheels

[IvanaGyro]

Stack

master → #1110 → codex/windows-msvc-cuda-stack (#1116 patch) → #1117 → #1118 → #1119 → #1113

This workflow-only PR depends on #1119. Its own diff is limited to the two existing PyPI workflow files.

Summary

• add Windows Server 2022 CPU and CUDA wheel jobs using the locked wheel-cpu and wheel-cuda Pixi environments;
• run prepare-windows before CPU wheels and prepare-cuda before CUDA wheels, creating ARPACK/CUDA import libraries before CMake configures;
• build CPython 3.10 through 3.14 win_amd64 wheels;
• cache compilation output and upload Windows artifacts separately;
• include Windows artifacts in stable PyPI publication while leaving nightly/Conda behavior unchanged;
• retain the existing Linux and macOS jobs.

Prior failure and fix

The split Windows CUDA job reached native linking but failed in device LTO against the PyPI CUDA/NVVM layout. #1119 now disables IPO only for Windows CUDA release wheels while preserving Linux LTO. The earlier Windows MODULE install issue is fixed in #1118.

Validation

• both workflow files pass repository-pinned hooks and git diff --check;
• the top-layer diff contains only the two workflow files;
• local locked CPU/CUDA environments, all-target MSVC builds, wheel tooling, downstream package consumption, and release-manifest tests pass in the implementation layers;
• fresh GitHub checks were triggered by the rebase onto current master.

Part of #1114.

[gemini-code-assist]

Caution

The consumer version of Gemini Code Assist on GitHub has been sunset. All code review activity has officially ceased.

[gemini-code-assist]

Caution

The consumer version of Gemini Code Assist on GitHub has been sunset. All code review activity has officially ceased.

[yingjerkao]

I thought we don't support native Windows?

[IvanaGyro]

I thought we don't support native Windows?

It is just a proposal. If we really exclude supporting Windows, the PR chain can be close. Only partially #1109 and partially #1116 are needed.

[yingjerkao]

I thought we don't support native Windows?

It is just a proposal. If we really exclude supporting Windows, the PR chain can be close. Only partially #1109 and partially #1116 are needed

I will approve this PR chain as a whole.