Reuse a matching ARM64 Visual Studio environment instead of growing its paths on each initialization. Preserve Rust and Cargo homes before isolating bundle state. Hand the private Termux assembly directory to its container user and restore host ownership afterward.
Verified targeted tests, real ARM64 SDK/OpenSSL execution, Rust compilation, and container facts publication. Full release packages were not rebuilt. The Windows x64 source-build timeout and the unchanged Termux linkage fixture failure remain unresolved.