tinygo-org/tinygo ? reverse-engineered prompt

Build me a clean setup for this TinyGo project so I can clone it and get it building and running without fighting the environment.

I want a simple developer workflow for compiling TinyGo from source, running the tests, and trying a basic example like blinking a board or building a small WebAssembly file. If anything in the repo is missing or fragile, please fix it so the main build and test path works smoothly on a normal machine.

Please make the instructions and scripts as straightforward as possible, and if you need to check current docs or dependencies online, go ahead and do that. I care most about being able to get from fresh clone to a working compiler build with minimal steps, then use it for microcontroller and WASM targets.