The sheet stays in step
Center is a spreadsheet of contacts. The daily loop is cells, keyboard, and the row you already have open — so the grid has to feel like a sheet you live in, not a table that happens to scroll.
This round is about that loop staying honest while you move. The header no longer belongs to the left edge of the viewport: it belongs to the columns. The active cell is a selection, not a highlight that leaks.
Nothing about who is on the list changed. The list just became a better place to look.
Improvements
Grid
The header now travels with horizontal scrolling, so column names stay on the fields you are looking at.
Grid
The active cell uses a 2px mark border and paper fill, closer to how a spreadsheet treats the selection.
Grid
Double-click edits a cell. Shift and meta extend the selection the way they do in a sheet.
Fixes
Grid
The active cell now clips its text like every other cell, instead of letting long values spill into the next column.
Grid
A drag that ends where it began, and drops nowhere, is treated as the click it was meant to be — lists navigate, field rows toggle.