Servo-replacement runtime for Tauri: wires html-cat, css-cat, dom-cat, layout-cat, paint-cat, net-cat, boa-cat, ecma-runtime-cat, and web-api-cat into a single rendering + scripting pipeline. v2.2.0 closes the cookie loop: `http://` navigates now parse `Set-Cookie` response headers and merge them into the webview's jar (replace-by-name semantics), so a navigation that sets a cookie persists for the next request without the host having to call `set_cookie` from Rust. The Servo no-AI policy disqualifies upstream contribution; this is the AI-built parallel.