This skill is the shared mental model referenced by all leaves. It explains what the scene graph is in PixiJS v8, how a differs from a leaf, and where each concept lives. It does not go deep on any single API; it frames the pieces and points to the skill or reference file that does. Quick Start Related skills: (Container API in detail), the leaf skills ( , , , , , , ), (hit testing traverses the scene graph), (cache, culling, render groups), (Matrix, toGlobal/toLocal detail). Core Concepts What the scene graph is The PixiJS scene graph is a tree of display objects rooted at . Each node has a…