vlang/v — reverse-engineered prompt

I want you to get this V language repo working end to end on my machine. Build it from source the normal way for my OS, handle any missing setup, and make sure I finish with a usable v compiler I can run locally. After it builds, verify it actually works by running a simple hello world example, showing the version, and opening the REPL if that is available.

If there are platform specific steps for Windows, Mac, Linux, BSD, WSL, Docker, or Termux, detect what makes sense here and use the right path. If the build needs a C compiler or other basic tools, set that up too. Please keep the project itself intact and follow the repo’s preferred install method.

Once it is working, give me a short plain English summary of what you did, where the executable ended up, how I can run a V file, how to update it later, and any caveats if this language is still pre 1.0. Look up current docs online if you need to.