feat(tui): show reasoning effort in statusbar

Author: lvillani

internal/tui/model.go

@@ -73,7 +73,7 @@ func initialModel(agent *agent.Agent) model {
 	return model{
 		agent:     agent,
 		spinner:   s,
-		statusbar: statusbar.New(agent.Chat.Model, modelContextWindow(agent.ModelInfo)),
+		statusbar: statusbar.New(agent.Chat.Model, string(agent.Chat.ReasoningEffort), modelContextWindow(agent.ModelInfo)),
 		help:      help.New(),
 		textarea:  t,
 		keys:      defaultKeyMap(),

internal/tui/statusbar/statusbar.go

@@ -20,6 +20,7 @@ var style = lipgloss.NewStyle().Faint(true)
 type Model struct {
 	directory       string
 	model           string
+	reasoningEffort string
 	messageCount    int
 	usage           Usage
 	contextWindow   int64
@@ -34,17 +35,19 @@ type Usage struct {
 	CachedTokensRatio float64
 }
 
-// New creates a status bar that shows the current working directory and model name.
-func New(modelName string, contextWindow int64) Model {
+// New creates a status bar that shows the current working directory, model name, and
+// reasoning effort.
+func New(modelName, reasoningEffort string, contextWindow int64) Model {
 	directory, err := os.Getwd()
 	if err != nil {
 		directory = ""
 	}
 
 	return Model{
-		directory:     shortenHome(directory, homeDirectory()),
-		model:         modelName,
-		contextWindow: contextWindow,
+		directory:       shortenHome(directory, homeDirectory()),
+		model:           modelName,
+		reasoningEffort: reasoningEffort,
+		contextWindow:   contextWindow,
 		contextProgress: progress.New(
 			progress.WithColors(lipgloss.BrightBlack, lipgloss.BrightBlack),
 			progress.WithoutPercentage(),
@@ -79,6 +82,9 @@ func (m Model) View() string {
 	if m.model != "" {
 		parts = append(parts, m.model)
 	}
+	if m.reasoningEffort != "" {
+		parts = append(parts, m.reasoningEffort)
+	}
 
 	return style.Render(strings.Join(parts, " · ")) + "\n" + m.usageSummary()
 }

internal/tui/statusbar/statusbar_test.go

@@ -50,9 +50,9 @@ func TestShortenHome(t *testing.T) {
 }
 
 func TestViewShowsModel(t *testing.T) {
-	m := Model{directory: "~/Development/thing", model: "gpt-4o"}
+	m := Model{directory: "~/Development/thing", model: "gpt-4o", reasoningEffort: "high"}
 
-	if got := m.View(); !strings.Contains(got, "~/Development/thing · gpt-4o") {
+	if got := m.View(); !strings.Contains(got, "~/Development/thing · gpt-4o · high") {
 		t.Errorf("View() = %q, want directory and model", got)
 	}
 }
@@ -78,7 +78,7 @@ func TestFormatTokens(t *testing.T) {
 }
 
 func TestViewShowsStats(t *testing.T) {
-	m := New("gpt-4o", 1000)
+	m := New("gpt-4o", "high", 1000)
 	m.directory = "~/thing"
 	m.SetStats(5, Usage{
 		PromptTokens:      100,