Let the lead reorder tabs on what the pane already shows

internal/agents/lead_test.go

@@ -2,6 +2,7 @@ package agents_test
 
 import (
 	"fmt"
+	"slices"
 	"strings"
 	"testing"
 	"time"
@@ -89,6 +90,22 @@ func TestLeadSignalsAndShow(t *testing.T) {
 		t.Fatalf("focus moved while the pane was focused: %+v", f)
 	}
 
+	_, err = m.MessageLead(e.ctx, e.user, "Call the show tool with task_id "+e.task.Id+", tabs [\"inbox\", \"changes\"] and tab \"inbox\". Then say done.", "", nil)
+	if err != nil {
+		t.Fatalf("message lead: %v", err)
+	}
+	e.waitFor("show of what is already shown", func(ev api.Event) bool {
+		return ev.Kind == "agent.tool_result" && ev.Owner != nil && strings.Contains(fmt.Sprint(ev.Payload), "Already shown")
+	})
+	e.waitFor("lead idle after already-shown show", leadIdle)
+	f, err = e.store.GetFocus(e.ctx, login)
+	if err != nil {
+		t.Fatalf("get focus: %v", err)
+	}
+	if f.Tab != api.TabInbox || !slices.Equal(f.Tabs, []api.TaskTab{api.TabInbox, api.TabChanges}) {
+		t.Fatalf("tabs not reordered on the shown tab: %+v", f)
+	}
+
 	err = e.store.WithdrawItem(e.ctx, created[len(created)-1].Payload["id"].(string))
 	if err != nil {
 		t.Fatalf("withdraw report: %v", err)