Bindings between boa-cat (JS engine) and the DOM (html-cat tree) plus fetch (net-cat). v0.7.7 adds `Element.dataset`: a snapshot Object on each parsed element whose properties are the camelCase suffixes of all `data-*` attributes. `<div data-user-name='alice'>` becomes `el.dataset.userName === 'alice'`. `createElement` output starts with an empty dataset. Snapshot semantics: runtime `setAttribute('data-foo', 'x')` and `el.dataset.foo = 'x'` don't sync to each other (no Proxy support). `inline_style::kebab_to_camel` promoted to `pub` for the dataset builder. Seventh sub-crate of a Servo-replacement webview runtime targeting Tauri.