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. v3.22.0 picks up web-api-cat 0.7.8: user-supplied webview scripts get an extended `querySelector` grammar covering comma-separated selector lists, multi-class compounds, attribute selectors (`[attr]` / `[attr=val]` / `[attr^=val]` / `[attr$=val]` / `[attr*=val]`), the universal `*`, and whitespace + `>` combinators. No tauri-runtime-servocat source change beyond the manifest. Seventh sub-crate of a Servo-replacement webview runtime targeting Tauri.