dtourolle
2afc2a7890
`changed columns` fires on a change, and a first evaluation is not one: a grid built after the window had settled at its size never said how wide it was, so Rust placed month headings for the one column it was told about at start-up — every month began a row, and was announced wherever its first cell fell, mid-row included. Opening a collection showed "October 2025" stranded over a row of August.