wmndilshan/Casprix — reverse-engineered prompt

I want this turned into a usable first version of Casprix, a modern compiled programming language that feels clean and fast to use. Please make the compiler build cleanly, let me write simple Casprix files and compile them into native executables, and make the basic developer flow feel solid with a clear command line, helpful errors, and a working hello world plus a few small example programs.

Keep the language experience focused on what already seems to be here, like static types, functions, simple ownership and borrow style safety, strings, and optimization support. If the VM and JIT paths are already partly implemented, wire them up enough that they can be tried without feeling broken, but do not invent big features that are not ready yet.

I would also like the package manager, standard library pieces, docs, and tests cleaned up so someone can clone the repo, build it on Windows, Linux, or macOS, and understand how to use it right away. Look up current docs online if you need to.