tauri-runtime-servocat 3.6.0

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. v3.6.0 wires the v0.3 `web-api-cat::{set_document_cookie, get_document_cookie}` helpers into `WebviewState::eval`: before each script the JS-visible portion of the jar (non-`HttpOnly`, non-expired entries) is pushed into `document.cookie`; after the script, any JS write is parsed via `Cookie::split_parse` and merged back by name. `HttpOnly` cookies are now hidden from `document.cookie` while still being sent on the wire (per RFC 6265 §5.2.6). The Servo no-AI policy disqualifies upstream contribution; this is the AI-built parallel.