ikura

https://github.com/haruna-tsujita/ikura

Ikura is a minimal Turbo Stream implementation built from scratch using Ruby Wasm and Ruby's built-in TCPServer — no Rails, no frontend framework, no external runtime dependencies. Click anywhere on the gunkan-maki sushi in the browser to place ikura (salmon roe); click events run in Ruby via WebAssembly and DOM updates arrive as Turbo Streams.