Misc small improvements.

tui/asset/asset.go

@@ -148,9 +148,9 @@ type update struct {
 type stopIndicator struct{}
 
 func (m Model) refresh() tea.Msg {
-	ctx, cancel := context.WithDeadline(
+	ctx, cancel := context.WithTimeout(
 		context.Background(),
-		time.Now().Add(refreshDeadline))
+		refreshTimeout)
 	defer cancel()
 	err := m.math.Refresh(ctx)
 	if err != nil {
@@ -183,7 +183,7 @@ func (m Model) stopIndicator() tea.Cmd {
 }
 
 var refreshInterval = time.Second * 30
-var refreshDeadline = time.Second * 15
+var refreshTimeout = time.Second * 15
 var stopIndicatorDelay = time.Millisecond * 500
 
 func refillProperties(m *Model) {