Free the right pane for the lead once its inbox empties or task merges

internal/agents/lead_test.go

@@ -88,6 +88,18 @@ func TestLeadSignalsAndShow(t *testing.T) {
 	if f.Tab != api.TabInbox {
 		t.Fatalf("focus moved while the pane was focused: %+v", f)
 	}
+
+	err = e.store.WithdrawItem(e.ctx, created[len(created)-1].Payload["id"].(string))
+	if err != nil {
+		t.Fatalf("withdraw report: %v", err)
+	}
+	_, err = m.MessageLead(e.ctx, e.user, "Call the show tool with task_id "+e.task.Id+", tabs [\"changes\"] and tab \"changes\". Then say done.", "", nil)
+	if err != nil {
+		t.Fatalf("message lead: %v", err)
+	}
+	e.waitFor("show allowed on an emptied inbox", func(ev api.Event) bool {
+		return ev.Kind == "focus.updated" && ev.Actor == login+" (lead)" && ev.Payload["tab"] == string(api.TabChanges)
+	})
 }
 
 func TestFocusProject(t *testing.T) {