AutoSizeOrigin

type AutoSizeOrigin = "top-left" | "center";

Reference point that stays fixed when an auto-sized element's measured size changes. Mirrors CSS transform-origin semantics.

• 'top-left' (default): element grows right/down, top-left stays put.
• 'center': element grows symmetrically, geometric center stays put.

Only affects writes from the useMeasureElement pipeline. Manual cell.resize(), interactive resize tools, and direct cell.set('size', ...) calls are unaffected.