This product includes algorithms transcribed from browser-use
(https://github.com/browser-use/browser-use), MIT License,
Copyright (c) 2024 Gregor Zunic.

The transcribed sources, with the upstream commit recorded in each file header, are:

  src/core/perception/containment.ts
    from browser_use/dom/serializer/serializer.py at cfe10a2
      DEFAULT_CONTAINMENT_THRESHOLD, PROPAGATING_ELEMENTS, _is_contained,
      and the five exception rules that keep a contained child.

  src/core/perception/occlusion.ts
    from browser_use/dom/serializer/paint_order.py at cfe10a2
      the question (is this control covered?), answered here by a native
      hit test rather than their paint-order rectangle union.

The rest of the perception pipeline — collection, refs, ranking — is original.