Use Go for cross platform tools

Jasonelle ships helper tools (such as tools/icon) that must run on macOS, Linux, and Windows, both on developer machines and in CI. Writing them as shell scripts or platform-specific binaries duplicates code and complicates distribution. Which language should be used for these cross platform tools?

Chosen option: "Use Go", because it compiles to a single static native binary for each target platform with one toolchain, its standard library covers the common needs (CLI flags, files, images, JSON), and it is simple to read and build. Positive consequences: tools distribute as prebuilt binaries per platform, CI builds are fast and repeatable, and tests run with the standard go test tool. Negative consequences: an additional toolchain to install for developers who build the tools from source.

Go is the best option, because a cross compiled binary can be produced for macOS, Linux, and Windows with a single command and no runtime dependency. If Rust was chosen, tooling would be more powerful but compilation and the toolchain are heavier. If Elixir scripts were kept, each target machine would need the Erlang/OTP runtime installed, which complicates distribution.