Row header
Numeric row gutter with click-to-select, freeze toggle, and bottom height-resize handle.
Production answer
Row header is a reusable Oak Flats Muffler Men UI primitive with documented states, accessibility expectations, theme behavior, and implementation evidence.
Primary CTAReview Row header states
Generative search brief
Row header: Numeric row gutter with click-to-select, freeze toggle, and bottom height-resize handle.
Quote totals worksheet · gutter column
Behaviour
Click the number to select the whole row. Freeze toggle pins the row to the top of the viewport. Bottom edge exposes a row-resize handle that fires onResizeStart.