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. v1.3.0 round-trips state-query methods on `WindowDispatch` (inner_size / outer_size / scale_factor / title / is_visible / is_focused / is_maximized / is_minimized / is_fullscreen / theme / ...) through the event loop via reply channels, so callers see real values from the live winit window instead of zero placeholders; `WebviewDispatch::eval_script_with_callback` now delivers the JS return value back through the supplied callback. The Servo no-AI policy disqualifies upstream contribution; this is the AI-built parallel.