v0.3.0 — Resource blocking (proxy bandwidth saving)

Block whole resource categories (images/CSS/fonts/media/...) to cut proxy bandwidth — often 90%+ on heavy pages. Uses the same CDP Fetch interceptor as anti-redirect.

let (browser, handler) = launch(LaunchOptions {
    block_resources: vec!["image".into(), "css".into(), "font".into(), "media".into()],
    ..Default::default()
}).await?;

Verified live: blocking img/css/font/media cut a Wikipedia page from 416KB to 0.3KB.