`picker.layout` オプションを変更する。
```lua
opts = {
picker = {
layout = {
cycle = true,
preset = "vertical",
layout = {
backdrop = false,
width = 120,
min_width = 80,
height = 0.9,
min_height = 30,
box = "vertical",
border = "rounded",
title = "{title} {live} {flags}",
title_pos = "center",
-- ここから表示順. プレビューを上半分にして、入力と候補は下に表示
{ win = "preview", title = "{preview}", height = 0.5, border = "bottom" },
{ win = "input", height = 1, border = "bottom" },
{ win = "list", border = "none" },
},
},
},
},
```