diff --git a/cmd/muyue/main.go b/cmd/muyue/main.go
index 61b69bb..e30b513 100644
--- a/cmd/muyue/main.go
+++ b/cmd/muyue/main.go
@@ -83,7 +83,7 @@ Commands:
   help               Show this help
 
 TUI Controls:
-  Ctrl+M             Open tab switcher (navigate with arrows, select with enter)
+  Ctrl+T             Open tab switcher (navigate with arrows, select with enter)
   Tab / Shift+Tab    Cycle tabs
   Ctrl+C             Show quit confirmation (press twice quickly to force quit)
 
diff --git a/internal/tui/app.go b/internal/tui/app.go
index b2b4b20..e880acc 100644
--- a/internal/tui/app.go
+++ b/internal/tui/app.go
@@ -37,42 +37,26 @@ const (
 	tabDashboard tab = iota
 	tabChat
 	tabWorkflow
+	tabTerminal
 	tabAgents
 	tabConfig
 	tabCount
 )
 
-var tabNames = []string{"Dashboard", "Chat", "Workflow", "Agents", "Config"}
+var tabNames = []string{"Dashboard", "Chat", "Workflow", "Terminal", "Agents", "Config"}
 
 var (
-	baseColor      = lipgloss.Color("#FF6B9D")
-	accentColor    = lipgloss.Color("#A0D2FF")
-	aiColor        = lipgloss.Color("#C4B5FD")
-	successColor   = lipgloss.Color("#4ADE80")
-	warningColor   = lipgloss.Color("#FBBF24")
-	errorColor     = lipgloss.Color("#FF6B6B")
-	mutedColor     = lipgloss.Color("#666680")
-	dimColor       = lipgloss.Color("#444460")
-	bgDark         = lipgloss.Color("#1A1A2E")
-	bgPanel        = lipgloss.Color("#16213E")
-	bgCard         = lipgloss.Color("#1F2937")
-
-	titleStyle = lipgloss.NewStyle().
-			Bold(true).
-			Foreground(lipgloss.Color("#FF6B9D")).
-			Background(bgDark).
-			Padding(0, 2)
-
-	tabStyle = lipgloss.NewStyle().
-			Padding(0, 2).
-			Foreground(mutedColor)
-
-	activeTabStyle = lipgloss.NewStyle().
-			Padding(0, 2).
-			Foreground(baseColor).
-			Border(lipgloss.NormalBorder(), false, false, true, false).
-			BorderForeground(baseColor).
-			Bold(true)
+	baseColor    = lipgloss.Color("#FF6B9D")
+	accentColor  = lipgloss.Color("#A0D2FF")
+	aiColor      = lipgloss.Color("#C4B5FD")
+	successColor = lipgloss.Color("#4ADE80")
+	warningColor = lipgloss.Color("#FBBF24")
+	errorColor   = lipgloss.Color("#FF6B6B")
+	mutedColor   = lipgloss.Color("#666680")
+	dimColor     = lipgloss.Color("#444460")
+	bgDark       = lipgloss.Color("#1A1A2E")
+	bgPanel      = lipgloss.Color("#16213E")
+	bgCard       = lipgloss.Color("#1F2937")
 
 	sectionStyle = lipgloss.NewStyle().
 			Foreground(accentColor).
@@ -102,10 +86,6 @@ var (
 	inputStyle = lipgloss.NewStyle().
 			Foreground(baseColor)
 
-	phaseStyle = lipgloss.NewStyle().
-			Foreground(warningColor).
-			Bold(true)
-
 	stepDoneStyle = lipgloss.NewStyle().
 			Foreground(successColor)
 
@@ -119,24 +99,18 @@ var (
 	stepErrorStyle = lipgloss.NewStyle().
 			Foreground(errorColor)
 
-	cardStyle = lipgloss.NewStyle().
-			Border(lipgloss.RoundedBorder()).
-			BorderForeground(dimColor).
-			Padding(0, 1).
-			BorderBackground(bgPanel)
-
 	statusBarStyle = lipgloss.NewStyle().
 			Background(bgDark).
 			Foreground(lipgloss.Color("#A0A0B0")).
 			Padding(0, 1)
 
 	confirmBoxStyle = lipgloss.NewStyle().
-			Border(lipgloss.RoundedBorder()).
-			BorderForeground(baseColor).
-			Background(bgCard).
-			Foreground(lipgloss.Color("#FFFFFF")).
-			Padding(1, 3).
-			Bold(true)
+				Border(lipgloss.RoundedBorder()).
+				BorderForeground(baseColor).
+				Background(bgCard).
+				Foreground(lipgloss.Color("#FFFFFF")).
+				Padding(1, 3).
+				Bold(true)
 
 	confirmYesStyle = lipgloss.NewStyle().
 			Foreground(successColor).
@@ -144,19 +118,6 @@ var (
 
 	confirmNoStyle = lipgloss.NewStyle().
 			Foreground(mutedColor)
-
-	gradientStyle = lipgloss.NewStyle().
-			Foreground(lipgloss.Color("#FF6B9D"))
-
-	logoStyle = lipgloss.NewStyle().
-			Foreground(baseColor).
-			Bold(true)
-
-	versionBadgeStyle = lipgloss.NewStyle().
-				Background(baseColor).
-				Foreground(lipgloss.Color("#FFFFFF")).
-				Padding(0, 1).
-				Bold(true)
 )
 
 type aiResponseMsg struct{ content string }
@@ -180,6 +141,9 @@ type skillsListMsg struct{ skills []skills.Skill }
 
 type spinnerTickMsg struct{ time time.Time }
 
+type termOutputMsg struct{ line string }
+type termExitMsg struct{}
+
 type Model struct {
 	config        *config.MuyueConfig
 	scanResult    *scanner.ScanResult
@@ -202,22 +166,28 @@ type Model struct {
 	mcpConfigured bool
 	skillList     []skills.Skill
 
-	helpModel     help.Model
-	progressBar   progress.Model
-	spinner       spinner.Model
+	helpModel   help.Model
+	progressBar progress.Model
+	spinner     spinner.Model
 
-	showingQuit   bool
-	confirmCursor int
+	showingQuit    bool
+	confirmCursor  int
 	showingTabMenu bool
 	tabMenuCursor  int
 
-	ctrlCCount   int
-	lastCtrlC    time.Time
+	ctrlCCount int
+	lastCtrlC  time.Time
 
-	installing      bool
-	installCurrent  int
-	installTotal    int
-	installTool     string
+	installing     bool
+	installCurrent int
+	installTotal   int
+	installTool    string
+
+	termCmd    *exec.Cmd
+	termInput  string
+	termLog    []string
+	termRunning bool
+	termCwd    string
 }
 
 type keyMap struct {
@@ -241,7 +211,7 @@ var keys = keyMap{
 	),
 	Prev: key.NewBinding(
 		key.WithKeys("shift+tab"),
-		key.WithHelp("⇧+tab", "prev tab"),
+		key.WithHelp("shift+tab", "prev tab"),
 	),
 	Quit: key.NewBinding(
 		key.WithKeys("ctrl+c"),
@@ -256,8 +226,8 @@ var keys = keyMap{
 		key.WithHelp("n/esc", "no"),
 	),
 	TabMenu: key.NewBinding(
-		key.WithKeys("ctrl+m"),
-		key.WithHelp("ctrl+m", "switch tab"),
+		key.WithKeys("ctrl+t"),
+		key.WithHelp("ctrl+t", "switch tab"),
 	),
 	Install: key.NewBinding(
 		key.WithKeys("i"),
@@ -277,7 +247,7 @@ var keys = keyMap{
 	),
 	Backspace: key.NewBinding(
 		key.WithKeys("backspace"),
-		key.WithHelp("⌫", "delete"),
+		key.WithHelp("backspace", "delete"),
 	),
 }
 
@@ -316,6 +286,8 @@ func NewModel(cfg *config.MuyueConfig, scan *scanner.ScanResult) Model {
 
 	prog := progress.New(progress.WithGradient("#FF6B9D", "#A0D2FF"))
 
+	cwd, _ := os.Getwd()
+
 	return Model{
 		config:        cfg,
 		scanResult:    scan,
@@ -339,6 +311,7 @@ func NewModel(cfg *config.MuyueConfig, scan *scanner.ScanResult) Model {
 		confirmCursor:  1,
 		showingTabMenu: false,
 		tabMenuCursor:  0,
+		termCwd:        cwd,
 	}
 }
 
@@ -358,6 +331,21 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		pm, cmd := m.progressBar.Update(msg)
 		m.progressBar = pm.(progress.Model)
 		return m, cmd
+	case termOutputMsg:
+		m.termLog = append(m.termLog, msg.line)
+		if m.activeTab == tabTerminal {
+			m.viewport.SetContent(m.renderContent())
+			m.viewport.GotoBottom()
+		}
+		return m, nil
+	case termExitMsg:
+		m.termRunning = false
+		m.termLog = append(m.termLog, lipgloss.NewStyle().Foreground(mutedColor).Render("(process exited)"))
+		m.termCmd = nil
+		if m.activeTab == tabTerminal {
+			m.viewport.SetContent(m.renderContent())
+		}
+		return m, nil
 	case aiResponseMsg:
 		m.chatLoading = false
 		content := msg.content
@@ -449,12 +437,15 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.width = msg.Width
 		m.height = msg.Height
 		m.helpModel.Width = msg.Width
-		headerH := 4
+		headerH := 1
 		footerH := 2
 		inputH := 0
 		if m.activeTab == tabChat || m.activeTab == tabWorkflow {
 			inputH = 2
 		}
+		if m.activeTab == tabTerminal {
+			inputH = 2
+		}
 		contentH := msg.Height - headerH - footerH - inputH
 		if contentH < 1 {
 			contentH = 1
@@ -478,6 +469,10 @@ func (m Model) handleKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		return m.handleTabMenu(msg)
 	}
 
+	if m.activeTab == tabTerminal {
+		return m.handleTerminalKey(msg)
+	}
+
 	switch msg.String() {
 	case "ctrl+c":
 		now := time.Now()
@@ -490,7 +485,7 @@ func (m Model) handleKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		m.confirmCursor = 1
 		m.viewport.SetContent(m.renderContent())
 		return m, nil
-	case "ctrl+m":
+	case "ctrl+t":
 		m.showingTabMenu = true
 		m.tabMenuCursor = int(m.activeTab)
 		m.viewport.SetContent(m.renderContent())
@@ -532,6 +527,108 @@ func (m Model) handleKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	return m, nil
 }
 
+func (m Model) handleTerminalKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
+	switch msg.String() {
+	case "ctrl+c":
+		if m.termCmd != nil && m.termCmd.Process != nil {
+			m.termCmd.Process.Kill()
+			m.termRunning = false
+			m.termLog = append(m.termLog, lipgloss.NewStyle().Foreground(errorColor).Render("^C"))
+			m.termCmd = nil
+			m.viewport.SetContent(m.renderContent())
+			return m, nil
+		}
+		now := time.Now()
+		if m.ctrlCCount > 0 && now.Sub(m.lastCtrlC) < 2*time.Second {
+			return m, tea.Quit
+		}
+		m.ctrlCCount++
+		m.lastCtrlC = now
+		m.showingQuit = true
+		m.confirmCursor = 1
+		m.viewport.SetContent(m.renderContent())
+		return m, nil
+	case "ctrl+t":
+		m.showingTabMenu = true
+		m.tabMenuCursor = int(m.activeTab)
+		return m, nil
+	case "enter":
+		if m.termRunning {
+			return m, nil
+		}
+		input := strings.TrimSpace(m.termInput)
+		m.termInput = ""
+		if input == "" {
+			return m, nil
+		}
+		if input == "exit" || input == "quit" {
+			return m, nil
+		}
+		if input == "clear" {
+			m.termLog = nil
+			m.viewport.SetContent(m.renderContent())
+			return m, nil
+		}
+		if strings.HasPrefix(input, "cd ") {
+			dir := strings.TrimPrefix(input, "cd ")
+			dir = strings.TrimSpace(dir)
+			if dir == "~" {
+				home, _ := os.UserHomeDir()
+				dir = home
+			}
+			if err := os.Chdir(dir); err == nil {
+				m.termCwd, _ = os.Getwd()
+				m.termLog = append(m.termLog, lipgloss.NewStyle().Foreground(dimColor).Render(m.termCwd+" $ "+input))
+			} else {
+				m.termLog = append(m.termLog, errMsgStyle.Render("cd: "+err.Error()))
+			}
+			m.viewport.SetContent(m.renderContent())
+			m.viewport.GotoBottom()
+			return m, nil
+		}
+		m.termLog = append(m.termLog, lipgloss.NewStyle().Foreground(dimColor).Render(m.termCwd+" $ ")+input)
+		m.viewport.SetContent(m.renderContent())
+		m.viewport.GotoBottom()
+		return m, m.runTermCommand(input)
+	case "backspace":
+		if len(m.termInput) > 0 {
+			m.termInput = m.termInput[:len(m.termInput)-1]
+			m.viewport.SetContent(m.renderContent())
+		}
+		return m, nil
+	case "tab":
+		m.activeTab = (m.activeTab + 1) % tabCount
+		m.resizeViewport()
+		return m, nil
+	case "shift+tab":
+		m.activeTab = (m.activeTab - 1 + tabCount) % tabCount
+		m.resizeViewport()
+		return m, nil
+	default:
+		if len(msg.String()) == 1 {
+			m.termInput += msg.String()
+			m.viewport.SetContent(m.renderContent())
+		}
+	}
+	return m, nil
+}
+
+func (m Model) runTermCommand(input string) tea.Cmd {
+	return tea.Cmd(func() tea.Msg {
+		shell := os.Getenv("SHELL")
+		if shell == "" {
+			shell = "/bin/sh"
+		}
+		cmd := exec.Command(shell, "-c", input)
+		cmd.Dir = m.termCwd
+		out, err := cmd.CombinedOutput()
+		if err != nil {
+			return termOutputMsg{line: string(out) + errMsgStyle.Render(err.Error())}
+		}
+		return termOutputMsg{line: string(out)}
+	})
+}
+
 func (m Model) handleQuitConfirm(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	switch msg.String() {
 	case "y", "Y", "o", "O":
@@ -587,31 +684,15 @@ func (m Model) handleTabMenu(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		m.showingTabMenu = false
 		m.resizeViewport()
 		return m, nil
-	case "1":
-		m.activeTab = tabDashboard
-		m.showingTabMenu = false
-		m.resizeViewport()
-		return m, nil
-	case "2":
-		m.activeTab = tabChat
-		m.showingTabMenu = false
-		m.resizeViewport()
-		return m, nil
-	case "3":
-		m.activeTab = tabWorkflow
-		m.showingTabMenu = false
-		m.resizeViewport()
-		return m, nil
-	case "4":
-		m.activeTab = tabAgents
-		m.showingTabMenu = false
-		m.resizeViewport()
-		return m, nil
-	case "5":
-		m.activeTab = tabConfig
-		m.showingTabMenu = false
-		m.resizeViewport()
-		return m, nil
+	default:
+		for i := 0; i < int(tabCount); i++ {
+			if msg.String() == fmt.Sprintf("%d", i+1) {
+				m.activeTab = tab(i)
+				m.showingTabMenu = false
+				m.resizeViewport()
+				return m, nil
+			}
+		}
 	}
 	return m, nil
 }
@@ -638,10 +719,9 @@ func (m Model) renderTabMenuOverlay() string {
 		Width(4)
 
 	var items []string
-	icons := []string{"Dashboard", "Chat", "Workflow", "Agents", "Config"}
-	descs := []string{"system overview & tools", "AI chat & conversation", "plan & execute workflows", "background AI agents", "profile & settings"}
+	descs := []string{"system overview & tools", "AI chat & conversation", "plan & execute workflows", "integrated shell", "background AI agents", "profile & settings"}
 
-	for i, name := range icons {
+	for i, name := range tabNames {
 		num := tabNumStyle.Render(fmt.Sprintf(" %d.", i+1))
 		if i == m.tabMenuCursor {
 			item := fmt.Sprintf("%s %-12s %s", num, name, lipgloss.NewStyle().Foreground(mutedColor).Render(descs[i]))
@@ -656,7 +736,7 @@ func (m Model) renderTabMenuOverlay() string {
 		"\n\n" +
 		strings.Join(items, "\n") +
 		"\n\n" +
-		lipgloss.NewStyle().Foreground(dimColor).Render("↑↓ navigate  enter/select  esc cancel")
+		lipgloss.NewStyle().Foreground(dimColor).Render("up/down navigate  enter/select  esc cancel")
 
 	box := tabMenuStyle.Render(content)
 
@@ -826,12 +906,15 @@ func (m *Model) handlePreview(files []workflow.PreviewFile) {
 }
 
 func (m *Model) resizeViewport() {
-	headerH := 4
+	headerH := 1
 	footerH := 2
 	inputH := 0
 	if m.activeTab == tabChat || m.activeTab == tabWorkflow {
 		inputH = 2
 	}
+	if m.activeTab == tabTerminal {
+		inputH = 2
+	}
 	contentH := m.height - headerH - footerH - inputH
 	if contentH < 1 {
 		contentH = 1
@@ -983,6 +1066,10 @@ func (m Model) View() string {
 		return m.renderQuitOverlay()
 	}
 
+	if m.showingTabMenu {
+		return m.renderTabMenuOverlay()
+	}
+
 	var b strings.Builder
 	b.WriteString(m.renderHeader())
 	b.WriteString("\n")
@@ -991,14 +1078,13 @@ func (m Model) View() string {
 		b.WriteString("\n")
 		b.WriteString(m.renderChatInput())
 	}
+	if m.activeTab == tabTerminal {
+		b.WriteString("\n")
+		b.WriteString(m.renderTermInput())
+	}
 	b.WriteString("\n")
 	b.WriteString(m.renderFooter())
 
-	if m.showingTabMenu {
-		b = strings.Builder{}
-		b.WriteString(m.renderTabMenuOverlay())
-	}
-
 	return b.String()
 }
 
@@ -1026,23 +1112,25 @@ func (m Model) renderQuitOverlay() string {
 }
 
 func (m Model) renderHeader() string {
+	logoStyle := lipgloss.NewStyle().Foreground(baseColor).Bold(true)
+	badgeStyle := lipgloss.NewStyle().
+		Background(baseColor).
+		Foreground(lipgloss.Color("#FFFFFF")).
+		Padding(0, 1)
+
 	logo := logoStyle.Render("muyue")
-	badge := versionBadgeStyle.Render(" v" + version.Version + " ")
-	separator := lipgloss.NewStyle().Foreground(dimColor).Render(strings.Repeat("─", max(m.width-lipgloss.Width(logo)-lipgloss.Width(badge)-4, 0)))
+	badge := badgeStyle.Render("v" + version.Version)
 
-	topLine := lipgloss.JoinHorizontal(lipgloss.Center, " ", logo, " ", badge, " ", separator)
+	activeTabName := lipgloss.NewStyle().Foreground(accentColor).Bold(true).Render(tabNames[m.activeTab])
+	separator := lipgloss.NewStyle().Foreground(dimColor).Render(" · ")
 
-	tabs := make([]string, len(tabNames))
-	for i, name := range tabNames {
-		if tab(i) == m.activeTab {
-			tabs[i] = activeTabStyle.Render(name)
-		} else {
-			tabs[i] = tabStyle.Render(name)
-		}
-	}
-	tabsRow := lipgloss.JoinHorizontal(lipgloss.Bottom, tabs...)
+	rightPart := separator + activeTabName
 
-	return lipgloss.JoinVertical(lipgloss.Left, topLine, tabsRow)
+	line := lipgloss.NewStyle().Background(bgDark).Padding(0, 1).Render(
+		lipgloss.JoinHorizontal(lipgloss.Center, logo, " ", badge, rightPart),
+	)
+
+	return line
 }
 
 func (m Model) renderContent() string {
@@ -1053,6 +1141,8 @@ func (m Model) renderContent() string {
 		return m.renderChat()
 	case tabWorkflow:
 		return m.renderWorkflow()
+	case tabTerminal:
+		return m.renderTerminal()
 	case tabAgents:
 		return m.renderAgents()
 	case tabConfig:
@@ -1062,6 +1152,26 @@ func (m Model) renderContent() string {
 	}
 }
 
+func (m Model) renderTerminal() string {
+	var b strings.Builder
+
+	b.WriteString(sectionStyle.Render("Terminal"))
+	b.WriteString("  ")
+	b.WriteString(lipgloss.NewStyle().Foreground(dimColor).Render(m.termCwd))
+	b.WriteString("\n\n")
+
+	for _, line := range m.termLog {
+		b.WriteString(line + "\n")
+	}
+
+	return b.String()
+}
+
+func (m Model) renderTermInput() string {
+	prompt := lipgloss.NewStyle().Foreground(successColor).Render("$ ")
+	return prompt + m.termInput + lipgloss.NewStyle().Foreground(baseColor).Render("")
+}
+
 func (m Model) renderDashboard() string {
 	var b strings.Builder
 
@@ -1574,13 +1684,15 @@ func (m Model) renderFooter() string {
 	var helpText string
 	switch m.activeTab {
 	case tabDashboard:
-		helpText = "[i] install  [u] update  [s] scan  [l] lsp  [m] mcp"
+		helpText = "[i] install  [u] update  [s] scan"
 	case tabChat, tabWorkflow:
-		helpText = "[ctrl+m] switch tab  [tab] next  [ctrl+c] quit"
+		helpText = "[ctrl+t] tabs  [tab] next  [ctrl+c] quit"
+	case tabTerminal:
+		helpText = "[enter] run  [ctrl+c] kill  [clear] clear"
 	case tabAgents:
 		helpText = "[c] crush  [l] claude"
 	default:
-		helpText = "[ctrl+m] switch tab  [tab] next  [ctrl+c] quit"
+		helpText = "[ctrl+t] tabs  [tab] next  [ctrl+c] quit"
 	}
 	rightR := statusBarStyle.Render(helpText)