tui: add left arrow back navigation in model selector (#14940)

cmd/tui/selector.go

@@ -242,6 +242,10 @@ func (m selectorModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			m.cancelled = true
 			return m, tea.Quit
 
+		case tea.KeyLeft:
+			m.cancelled = true
+			return m, tea.Quit
+
 		case tea.KeyEnter:
 			filtered := m.filteredItems()
 			if len(filtered) > 0 && m.cursor < len(filtered) {
@@ -354,7 +358,7 @@ func (m selectorModel) renderContent() string {
 	}
 
 	s.WriteString("\n")
-	help := "↑/↓ navigate • enter select • esc cancel"
+	help := "↑/↓ navigate • enter select • ← back"
 	if m.helpText != "" {
 		help = m.helpText
 	}
@@ -608,6 +612,10 @@ func (m multiSelectorModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			m.cancelled = true
 			return m, tea.Quit
 
+		case tea.KeyLeft:
+			m.cancelled = true
+			return m, tea.Quit
+
 		case tea.KeyTab:
 			m.multi = !m.multi
 
@@ -810,7 +818,7 @@ func (m multiSelectorModel) View() string {
 	s.WriteString("\n")
 
 	if !m.multi {
-		s.WriteString(selectorHelpStyle.Render("↑/↓ navigate • enter select • tab add multiple • esc cancel"))
+		s.WriteString(selectorHelpStyle.Render("↑/↓ navigate • enter select • tab add multiple • ← back"))
 	} else {
 		count := m.selectedCount()
 		if count == 0 {
@@ -819,7 +827,7 @@ func (m multiSelectorModel) View() string {
 			s.WriteString(selectorDescStyle.Render(fmt.Sprintf("  %d selected - press enter to continue", count)))
 		}
 		s.WriteString("\n\n")
-		s.WriteString(selectorHelpStyle.Render("↑/↓ navigate • space toggle • tab select single • enter confirm • esc cancel"))
+		s.WriteString(selectorHelpStyle.Render("↑/↓ navigate • space toggle • tab select single • enter confirm • ← back"))
 	}
 
 	result := s.String()

cmd/tui/selector_test.go

@@ -782,6 +782,9 @@ func TestMulti_MultiModeHelpText(t *testing.T) {
 	if !strings.Contains(content, "tab select single") {
 		t.Error("multi mode should show 'tab select single' in help")
 	}
+	if !strings.Contains(content, "← back") {
+		t.Error("multi mode should show '← back' in help")
+	}
 }
 
 // --- preChecked initialization order ---
@@ -868,6 +871,46 @@ func TestMulti_UncheckingTopDefaultFallsBackToNearestCheckedBelow(t *testing.T)
 	}
 }
 
+// --- Left arrow back navigation ---
+
+func TestSelectorLeftArrowCancelsWhenNoFilter(t *testing.T) {
+	m := selectorModelWithCurrent("Pick:", items("a", "b", "c"), "")
+	updated, _ := m.Update(tea.KeyMsg{Type: tea.KeyLeft})
+	got := updated.(selectorModel)
+	if !got.cancelled {
+		t.Error("left arrow with empty filter should cancel (go back)")
+	}
+}
+
+func TestSelectorLeftArrowCancelsWhenFiltering(t *testing.T) {
+	m := selectorModelWithCurrent("Pick:", items("a", "b", "c"), "")
+	m.filter = "a"
+	updated, _ := m.Update(tea.KeyMsg{Type: tea.KeyLeft})
+	got := updated.(selectorModel)
+	if !got.cancelled {
+		t.Error("left arrow with active filter should still cancel (go back)")
+	}
+}
+
+func TestMultiSelectorLeftArrowCancelsWhenNoFilter(t *testing.T) {
+	m := newMultiSelectorModel("Pick:", items("a", "b", "c"), nil)
+	updated, _ := m.Update(tea.KeyMsg{Type: tea.KeyLeft})
+	got := updated.(multiSelectorModel)
+	if !got.cancelled {
+		t.Error("left arrow with empty filter should cancel (go back)")
+	}
+}
+
+func TestMultiSelectorLeftArrowCancelsWhenFiltering(t *testing.T) {
+	m := newMultiSelectorModel("Pick:", items("a", "b", "c"), nil)
+	m.filter = "a"
+	updated, _ := m.Update(tea.KeyMsg{Type: tea.KeyLeft})
+	got := updated.(multiSelectorModel)
+	if !got.cancelled {
+		t.Error("left arrow with active filter should still cancel (go back)")
+	}
+}
+
 // Key message helpers for testing
 
 type keyType = int