Method update

pkg/tui/tui.go:686–1205

(msg tea.Msg)

}

func (m *appModel) update(msg tea.Msg) (tea.Model, tea.Cmd) {
	// In lean mode, silently drop messages for features that don't exist.
	if m.leanMode {
		switch msg.(type) {
		case messages.SpawnSessionMsg, messages.SwitchTabMsg,
			messages.CloseTabMsg, messages.ReorderTabMsg,
			messages.ToggleSidebarMsg:
			return m, nil
		}
	}

	switch msg := msg.(type) {
	// --- Routing & Animation ---

	case messages.RoutedMsg:
		return m.handleRoutedMsg(msg)

	case animation.TickMsg:
		// Drop the tick (and let the chain die) while we're blurred.
		// animation.StartTick re-arms the chain on the next FocusMsg so
		// spinners resume immediately when the user comes back.
		if m.tickPaused {
			return m, nil
		}
		cmds := []tea.Cmd{m.updateChatCmd(msg)}
		// Update working spinner
		if m.chatPage.IsWorking() {
			model, cmd := m.workingSpinner.Update(msg)
			m.workingSpinner = model.(spinner.Spinner)
			cmds = append(cmds, cmd)
		}
		// Track frame for window-title spinner (tmux activity detection)
		m.animFrame = msg.Frame
		// Forward frame to tab bar for running indicator animation
		m.tabBar.SetAnimFrame(msg.Frame)
		if animation.HasActive() {
			cmds = append(cmds, animation.StartTick())
		}
		return m, tea.Batch(cmds...)

	// --- Tab management ---

	case messages.TabsUpdatedMsg:
		prevHeight := m.tabBar.Height()
		m.tabBar.SetTabs(msg.Tabs, msg.ActiveIdx)
		m.statusBar.SetShowNewTab(m.tabBar.Height() == 0)
		if m.tabBar.Height() != prevHeight {
			cmd := m.resizeAll()
			return m, cmd
		}
		return m, nil

	case messages.SpawnSessionMsg:
		return m.handleSpawnSession(msg.WorkingDir)

	case messages.SwitchTabMsg:
		return m.handleSwitchTab(msg.SessionID)