tauri-runtime-servocat 1.7.0

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. v1.7.0 adds per-window `WindowFlags` bookkeeping so `is_enabled` / `is_maximizable` / `is_minimizable` / `is_closable` / `is_always_on_top` / `is_focusable` round-trip real values from their matching setters; webview `bounds` / `position` / `size` queries now return tracked values updated by `set_bounds` / `set_size` / `set_position`. The Servo no-AI policy disqualifies upstream contribution; this is the AI-built parallel.