Neovim soft wrap: cursorline highlights whole paragraph

With wrap+linebreak on, a long markdown line wraps into many screen rows. Plain cursorline then highlights every row of that line, and j/k skip the whole paragraph. Fix: vim.o.cursorlineopt = "screenline,number" highlights only the current screen row. Map j/k as expr v:count == 0 ? 'gj' : 'j' so counts like 5j still move by real lines (relative numbers keep working).