use sort_lastused in Snacks.picker.smart

[sohanscript]

Is there any way to sort the buffers in the smart picker by last used??

          Snacks.picker.smart({
            title = "",
            hidden = false,
            layout = "select",
            multi = { { source = "buffers", sort_lastused = true }, "files" },
            filter = { cwd = true },
            on_show = initial_normal,
          })

[drowning-cat]

smart = {
  title = "Smart ass",
  multi = { "buffers", "files" },
  transform = function(item, ctx)
    if require("snacks.picker.transform").unique_file(item, ctx) == false then
      return false
    end
    item.buf_lastused = item.info and item.info.lastused or 0
  end,
  sort = {
    fields = { "buf_lastused:desc", "score:desc", "#text", "idx" },
  },
},