Is your feature request related to a problem? Please describe.
It’s currently hard to quickly experiment with Formwerk features, test configurations, and share examples. the dev may often find himself setting up a new project just to try out simple use cases, which is time-consuming.

Describe the solution you'd like
A playground environment (hosted on the website,) where users can:

• Write and preview Formwerk code instantly.
• Try different form configurations without needing a local setup.
• Share reproducible examples with others when asking for support or filing issues.

Describe alternatives you've considered

• Using external sandboxes like CodeSandbox, but these don’t always reflect the latest Formwerk release and require extra setup.

Additional context
A built-in playground would greatly improve the developer experience, speed up learning, and make community support easier.