Clear screen before displaying panel in stats mode.

cardsim/terminalui.go

@@ -375,6 +375,7 @@ func statsMode[C StatsCollection](p *Player[C]) error {
 			} else if v <= 0 || v > n {
 				fmt.Println("There's no info panel with that index.")
 			} else {
+				cls()
 				err := displayOnePanel(p, p.InfoPanels[v-1])
 				errs.Add(err)
 				if IsSeriousError(err) {