Bindings between boa-cat (JS engine) and the DOM (html-cat tree) plus fetch (net-cat). v0.7.14 adds `getElementsByTagName(name)` (with `'*'` universal and empty-input-yields-empty per spec) and `getElementsByClassName(classNames)` (whitespace-separated; ALL classes must match) on both `Element` and `document`. Both reuse the v0.7.11 selector machinery -- they're typed wrappers around `find_all_descendants` with the input rewritten as a selector string. Empty / whitespace-only inputs short-circuit to an empty NodeList without invoking the matcher (spec requires this; the underlying matcher would otherwise match everything). Seventh sub-crate of a Servo-replacement webview runtime targeting Tauri.