Xiangyu-Hu

SPHinXsim config schema and update-patch guidance for Pydantic models, validation patterns, patch operations, and testing conventions. Invoke by default for any task that edits or debugs files under sphinxsim/config.

SPHinXsim visualization guidance for preview architecture, rendering modes, annotations, constraints, and testing patterns. Invoke by default for any task that edits or debugs files under sphinxsim/visualization.