Building and Testing vstest

Pre-Build: Environment Setup

Before building, verify the .dotnet toolchain matches the current OS. The repo bootstraps its own .NET SDK into .dotnet/.

Detect OS vs .dotnet Mismatch

Run this check before every first build in a session:

# Determine current OS
OS=$(uname -s)   # "Linux", "Darwin" (macOS), or contains "MINGW"/"MSYS" (Windows/Git Bash)