weight-fill-false-to-center-a-cluster

A weighted child occupies its whole slot even when its content measures narrower, which pins the sibling beside it to the far edge; weight(1f, fill = false) releases the unused width back to the row's arrangement so child, gap and sibling read as one cluster. Covers why the tell is the sibling rather than the weighted child, why the fix is two edits and not one, and why dropping the weight instead is a different…