Source activation could not build cryptography because the setup shell
could not discover the installed OpenSSL development libraries.
Configure Visual Studio ARM64, Clang, Rust, and static OpenSSL before PM
runs. Reuse installed tools and install missing prerequisites. Select a
classic vcpkg with a ports tree and use an explicit installation root.
Report damaged shared libraries without deleting the shared installation.
Verified native PowerShell activation and deactivation on Promise, then
warm activation with no new dependency generation. Cryptography imported
with static OpenSSL. Real vcpkg checks covered installation into a path
with spaces, warm reuse, manifest mode, and damaged-package rejection.
The canonical Windows runner passed the helper and output-encoding tests.
Fresh Visual Studio and Rust installation were not exercised because
Promise already had those toolchains installed.
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