feat(tui): add standalone mode and API-based log polling

- Implemented `--standalone` mode to launch an embedded server for TUI.
- Enhanced TUI client to support API-based log polling when log hooks are unavailable.
- Added authentication gate for password input and connection handling.
- Improved localization and UX for logs, authentication, and status bar rendering.

cmd/server/main.go

@@ -71,6 +71,7 @@ func main() {
 	var configPath string
 	var password string
 	var tuiMode bool
+	var standalone bool
 
 	// Define command-line flags for different operation modes.
 	flag.BoolVar(&login, "login", false, "Login Google Account")
@@ -88,6 +89,7 @@ func main() {
 	flag.StringVar(&vertexImport, "vertex-import", "", "Import Vertex service account key JSON file")
 	flag.StringVar(&password, "password", "", "")
 	flag.BoolVar(&tuiMode, "tui", false, "Start with terminal management UI")
+	flag.BoolVar(&standalone, "standalone", false, "In TUI mode, start an embedded local server")
 
 	flag.CommandLine.Usage = func() {
 		out := flag.CommandLine.Output()
@@ -483,72 +485,82 @@ func main() {
 			cmd.WaitForCloudDeploy()
 			return
 		}
-		// Start the main proxy service
-		managementasset.StartAutoUpdater(context.Background(), configFilePath)
 		if tuiMode {
-			// Install logrus hook to capture logs for TUI
+			if standalone {
+				// Standalone mode: start an embedded local server and connect TUI client to it.
+				managementasset.StartAutoUpdater(context.Background(), configFilePath)
 				hook := tui.NewLogHook(2000)
 				hook.SetFormatter(&logging.LogFormatter{})
 				log.AddHook(hook)
-			// Suppress logrus stdout output (TUI owns the terminal)
-			log.SetOutput(io.Discard)
 
-			// Redirect os.Stdout and os.Stderr to /dev/null so that
-			// stray fmt.Print* calls in the backend don't corrupt the TUI.
 				origStdout := os.Stdout
 				origStderr := os.Stderr
-			devNull, errNull := os.Open(os.DevNull)
-			if errNull == nil {
+				origLogOutput := log.StandardLogger().Out
+				log.SetOutput(io.Discard)
+
+				devNull, errOpenDevNull := os.Open(os.DevNull)
+				if errOpenDevNull == nil {
 					os.Stdout = devNull
 					os.Stderr = devNull
 				}
 
-			// Generate a random local password for management API authentication.
-			// This is passed to the server (accepted for localhost requests)
-			// and used by the TUI HTTP client as the Bearer token.
+				restoreIO := func() {
+					os.Stdout = origStdout
+					os.Stderr = origStderr
+					log.SetOutput(origLogOutput)
+					if devNull != nil {
+						_ = devNull.Close()
+					}
+				}
+
 				localMgmtPassword := fmt.Sprintf("tui-%d-%d", os.Getpid(), time.Now().UnixNano())
 				if password == "" {
 					password = localMgmtPassword
 				}
 
-			// Start server in background
 				cancel, done := cmd.StartServiceBackground(cfg, configFilePath, password)
 
-			// Wait for server to be ready by polling management API with exponential backoff
-			{
 				client := tui.NewClient(cfg.Port, password)
+				ready := false
 				backoff := 100 * time.Millisecond
-				// Try for up to ~10-15 seconds
 				for i := 0; i < 30; i++ {
-					if _, err := client.GetConfig(); err == nil {
+					if _, errGetConfig := client.GetConfig(); errGetConfig == nil {
+						ready = true
 						break
 					}
 					time.Sleep(backoff)
-					if backoff < 1*time.Second {
+					if backoff < time.Second {
 						backoff = time.Duration(float64(backoff) * 1.5)
 					}
 				}
+
+				if !ready {
+					restoreIO()
+					cancel()
+					<-done
+					fmt.Fprintf(os.Stderr, "TUI error: embedded server is not ready\n")
+					return
 				}
 
-			// Run TUI (blocking) — use the local password for API auth
-			if err := tui.Run(cfg.Port, password, hook, origStdout); err != nil {
-				// Restore stdout/stderr before printing error
-				os.Stdout = origStdout
-				os.Stderr = origStderr
-				fmt.Fprintf(os.Stderr, "TUI error: %v\n", err)
+				if errRun := tui.Run(cfg.Port, password, hook, origStdout); errRun != nil {
+					restoreIO()
+					fmt.Fprintf(os.Stderr, "TUI error: %v\n", errRun)
+				} else {
+					restoreIO()
 				}
 
-			// Restore stdout/stderr for shutdown messages
-			os.Stdout = origStdout
-			os.Stderr = origStderr
-			if devNull != nil {
-				_ = devNull.Close()
-			}
-
-			// Shutdown server
 				cancel()
 				<-done
 			} else {
+				// Default TUI mode: pure management client.
+				// The proxy server must already be running.
+				if errRun := tui.Run(cfg.Port, password, nil, os.Stdout); errRun != nil {
+					fmt.Fprintf(os.Stderr, "TUI error: %v\n", errRun)
+				}
+			}
+		} else {
+			// Start the main proxy service
+			managementasset.StartAutoUpdater(context.Background(), configFilePath)
 			cmd.StartService(cfg, configFilePath, password)
 		}
 	}

internal/tui/app.go

@@ -1,10 +1,12 @@
 package tui
 
 import (
+	"fmt"
 	"io"
 	"os"
 	"strings"
 
+	"github.com/charmbracelet/bubbles/textinput"
 	tea "github.com/charmbracelet/bubbletea"
 	"github.com/charmbracelet/lipgloss"
 )
@@ -25,6 +27,14 @@ type App struct {
 	activeTab int
 	tabs      []string
 
+	standalone  bool
+	logsEnabled bool
+
+	authenticated  bool
+	authInput      textinput.Model
+	authError      string
+	authConnecting bool
+
 	dashboard dashboardModel
 	config    configTabModel
 	auth      authTabModel
@@ -34,7 +44,7 @@ type App struct {
 	logs      logsTabModel
 
 	client *Client
-	hook   *LogHook
+
 	width  int
 	height int
 	ready  bool
@@ -43,32 +53,60 @@ type App struct {
 	initialized [7]bool
 }
 
+type authConnectMsg struct {
+	cfg map[string]any
+	err error
+}
+
 // NewApp creates the root TUI application model.
 func NewApp(port int, secretKey string, hook *LogHook) App {
+	standalone := hook != nil
+	authRequired := !standalone
+	ti := textinput.New()
+	ti.CharLimit = 512
+	ti.EchoMode = textinput.EchoPassword
+	ti.EchoCharacter = '*'
+	ti.SetValue(strings.TrimSpace(secretKey))
+	ti.Focus()
+
 	client := NewClient(port, secretKey)
-	return App{
+	app := App{
 		activeTab:     tabDashboard,
-		tabs:      TabNames(),
+		standalone:    standalone,
+		logsEnabled:   true,
+		authenticated: !authRequired,
+		authInput:     ti,
 		dashboard:     newDashboardModel(client),
 		config:        newConfigTabModel(client),
 		auth:          newAuthTabModel(client),
 		keys:          newKeysTabModel(client),
 		oauth:         newOAuthTabModel(client),
 		usage:         newUsageTabModel(client),
-		logs:      newLogsTabModel(hook),
+		logs:          newLogsTabModel(client, hook),
 		client:        client,
-		hook:      hook,
+		initialized: [7]bool{
+			tabDashboard: true,
+			tabLogs:      true,
+		},
 	}
+
+	app.refreshTabs()
+	if authRequired {
+		app.initialized = [7]bool{}
+	}
+	app.setAuthInputPrompt()
+	return app
 }
 
 func (a App) Init() tea.Cmd {
-	// Initialize dashboard and logs on start
-	a.initialized[tabDashboard] = true
-	a.initialized[tabLogs] = true
-	return tea.Batch(
-		a.dashboard.Init(),
-		a.logs.Init(),
-	)
+	if !a.authenticated {
+		return textinput.Blink
+	}
+	cmds := []tea.Cmd{a.dashboard.Init()}
+	if a.logsEnabled {
+		cmds = append(cmds, a.logs.Init())
+	}
+	return tea.Batch(cmds...)
 }
 
 func (a App) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
@@ -77,6 +115,9 @@ func (a App) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		a.width = msg.Width
 		a.height = msg.Height
 		a.ready = true
+		if a.width > 0 {
+			a.authInput.Width = a.width - 6
+		}
 		contentH := a.height - 4 // tab bar + status bar
 		if contentH < 1 {
 			contentH = 1
@@ -91,32 +132,119 @@ func (a App) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		a.logs.SetSize(contentW, contentH)
 		return a, nil
 
+	case authConnectMsg:
+		a.authConnecting = false
+		if msg.err != nil {
+			a.authError = fmt.Sprintf(T("auth_gate_connect_fail"), msg.err.Error())
+			return a, nil
+		}
+		a.authError = ""
+		a.authenticated = true
+		a.logsEnabled = a.standalone || isLogsEnabledFromConfig(msg.cfg)
+		a.refreshTabs()
+		a.initialized = [7]bool{}
+		a.initialized[tabDashboard] = true
+		cmds := []tea.Cmd{a.dashboard.Init()}
+		if a.logsEnabled {
+			a.initialized[tabLogs] = true
+			cmds = append(cmds, a.logs.Init())
+		}
+		return a, tea.Batch(cmds...)
+
+	case configUpdateMsg:
+		var cmdLogs tea.Cmd
+		if !a.standalone && msg.err == nil && msg.path == "logging-to-file" {
+			logsEnabledConfig, okConfig := msg.value.(bool)
+			if okConfig {
+				logsEnabledBefore := a.logsEnabled
+				a.logsEnabled = logsEnabledConfig
+				if logsEnabledBefore != a.logsEnabled {
+					a.refreshTabs()
+				}
+				if !a.logsEnabled {
+					a.initialized[tabLogs] = false
+				}
+				if !logsEnabledBefore && a.logsEnabled {
+					a.initialized[tabLogs] = true
+					cmdLogs = a.logs.Init()
+				}
+			}
+		}
+
+		var cmdConfig tea.Cmd
+		a.config, cmdConfig = a.config.Update(msg)
+		if cmdConfig != nil && cmdLogs != nil {
+			return a, tea.Batch(cmdConfig, cmdLogs)
+		}
+		if cmdConfig != nil {
+			return a, cmdConfig
+		}
+		return a, cmdLogs
+
 	case tea.KeyMsg:
+		if !a.authenticated {
+			switch msg.String() {
+			case "ctrl+c", "q":
+				return a, tea.Quit
+			case "L":
+				ToggleLocale()
+				a.refreshTabs()
+				a.setAuthInputPrompt()
+				return a, nil
+			case "enter":
+				if a.authConnecting {
+					return a, nil
+				}
+				password := strings.TrimSpace(a.authInput.Value())
+				if password == "" {
+					a.authError = T("auth_gate_password_required")
+					return a, nil
+				}
+				a.authError = ""
+				a.authConnecting = true
+				return a, a.connectWithPassword(password)
+			default:
+				var cmd tea.Cmd
+				a.authInput, cmd = a.authInput.Update(msg)
+				return a, cmd
+			}
+		}
+
 		switch msg.String() {
 		case "ctrl+c":
 			return a, tea.Quit
 		case "q":
 			// Only quit if not in logs tab (where 'q' might be useful)
-			if a.activeTab != tabLogs {
+			if !a.logsEnabled || a.activeTab != tabLogs {
 				return a, tea.Quit
 			}
 		case "L":
 			ToggleLocale()
-			a.tabs = TabNames()
+			a.refreshTabs()
 			return a.broadcastToAllTabs(localeChangedMsg{})
 		case "tab":
+			if len(a.tabs) == 0 {
+				return a, nil
+			}
 			prevTab := a.activeTab
 			a.activeTab = (a.activeTab + 1) % len(a.tabs)
-			a.tabs = TabNames()
 			return a, a.initTabIfNeeded(prevTab)
 		case "shift+tab":
+			if len(a.tabs) == 0 {
+				return a, nil
+			}
 			prevTab := a.activeTab
 			a.activeTab = (a.activeTab - 1 + len(a.tabs)) % len(a.tabs)
-			a.tabs = TabNames()
 			return a, a.initTabIfNeeded(prevTab)
 		}
 	}
 
+	if !a.authenticated {
+		var cmd tea.Cmd
+		a.authInput, cmd = a.authInput.Update(msg)
+		return a, cmd
+	}
+
 	// Route msg to active tab
 	var cmd tea.Cmd
 	switch a.activeTab {
@@ -136,15 +264,17 @@ func (a App) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		a.logs, cmd = a.logs.Update(msg)
 	}
 
-	// Always route logLineMsg to logs tab even if not active,
-	// AND capture the returned cmd to maintain the waitForLog chain.
-	if _, ok := msg.(logLineMsg); ok && a.activeTab != tabLogs {
+	// Keep logs polling alive even when logs tab is not active.
+	if a.logsEnabled && a.activeTab != tabLogs {
+		switch msg.(type) {
+		case logsPollMsg, logsTickMsg, logLineMsg:
 			var logCmd tea.Cmd
 			a.logs, logCmd = a.logs.Update(msg)
 			if logCmd != nil {
 				cmd = logCmd
 			}
 		}
+	}
 
 	return a, cmd
 }
@@ -152,6 +282,30 @@ func (a App) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 // localeChangedMsg is broadcast to all tabs when the user toggles locale.
 type localeChangedMsg struct{}
 
+func (a *App) refreshTabs() {
+	names := TabNames()
+	if a.logsEnabled {
+		a.tabs = names
+	} else {
+		filtered := make([]string, 0, len(names)-1)
+		for idx, name := range names {
+			if idx == tabLogs {
+				continue
+			}
+			filtered = append(filtered, name)
+		}
+		a.tabs = filtered
+	}
+
+	if len(a.tabs) == 0 {
+		a.activeTab = tabDashboard
+		return
+	}
+	if a.activeTab >= len(a.tabs) {
+		a.activeTab = len(a.tabs) - 1
+	}
+}
+
 func (a *App) initTabIfNeeded(_ int) tea.Cmd {
 	if a.initialized[a.activeTab] {
 		return nil
@@ -171,12 +325,19 @@ func (a *App) initTabIfNeeded(_ int) tea.Cmd {
 	case tabUsage:
 		return a.usage.Init()
 	case tabLogs:
+		if !a.logsEnabled {
+			return nil
+		}
 		return a.logs.Init()
 	}
 	return nil
 }
 
 func (a App) View() string {
+	if !a.authenticated {
+		return a.renderAuthView()
+	}
+
 	if !a.ready {
 		return T("initializing_tui")
 	}
@@ -202,8 +363,10 @@ func (a App) View() string {
 	case tabUsage:
 		sb.WriteString(a.usage.View())
 	case tabLogs:
+		if a.logsEnabled {
 			sb.WriteString(a.logs.View())
 		}
+	}
 
 	// Status bar
 	sb.WriteString("\n")
@@ -212,6 +375,27 @@ func (a App) View() string {
 	return sb.String()
 }
 
+func (a App) renderAuthView() string {
+	var sb strings.Builder
+
+	sb.WriteString(titleStyle.Render(T("auth_gate_title")))
+	sb.WriteString("\n")
+	sb.WriteString(helpStyle.Render(T("auth_gate_help")))
+	sb.WriteString("\n\n")
+	if a.authConnecting {
+		sb.WriteString(warningStyle.Render(T("auth_gate_connecting")))
+		sb.WriteString("\n\n")
+	}
+	if strings.TrimSpace(a.authError) != "" {
+		sb.WriteString(errorStyle.Render(a.authError))
+		sb.WriteString("\n\n")
+	}
+	sb.WriteString(a.authInput.View())
+	sb.WriteString("\n")
+	sb.WriteString(helpStyle.Render(T("auth_gate_enter")))
+	return sb.String()
+}
+
 func (a App) renderTabBar() string {
 	var tabs []string
 	for i, name := range a.tabs {
@@ -226,18 +410,91 @@ func (a App) renderTabBar() string {
 }
 
 func (a App) renderStatusBar() string {
-	left := T("status_left")
-	right := T("status_right")
-	gap := a.width - lipgloss.Width(left) - lipgloss.Width(right)
+	left := strings.TrimRight(T("status_left"), " ")
+	right := strings.TrimRight(T("status_right"), " ")
+
+	width := a.width
+	if width < 1 {
+		width = 1
+	}
+
+	// statusBarStyle has left/right padding(1), so content area is width-2.
+	contentWidth := width - 2
+	if contentWidth < 0 {
+		contentWidth = 0
+	}
+
+	if lipgloss.Width(left) > contentWidth {
+		left = fitStringWidth(left, contentWidth)
+		right = ""
+	}
+
+	remaining := contentWidth - lipgloss.Width(left)
+	if remaining < 0 {
+		remaining = 0
+	}
+	if lipgloss.Width(right) > remaining {
+		right = fitStringWidth(right, remaining)
+	}
+
+	gap := contentWidth - lipgloss.Width(left) - lipgloss.Width(right)
 	if gap < 0 {
 		gap = 0
 	}
-	return statusBarStyle.Width(a.width).Render(left + strings.Repeat(" ", gap) + right)
+	return statusBarStyle.Width(width).Render(left + strings.Repeat(" ", gap) + right)
+}
+
+func fitStringWidth(text string, maxWidth int) string {
+	if maxWidth <= 0 {
+		return ""
+	}
+	if lipgloss.Width(text) <= maxWidth {
+		return text
+	}
+
+	out := ""
+	for _, r := range text {
+		next := out + string(r)
+		if lipgloss.Width(next) > maxWidth {
+			break
+		}
+		out = next
+	}
+	return out
+}
+
+func isLogsEnabledFromConfig(cfg map[string]any) bool {
+	if cfg == nil {
+		return true
+	}
+	value, ok := cfg["logging-to-file"]
+	if !ok {
+		return true
+	}
+	enabled, ok := value.(bool)
+	if !ok {
+		return true
+	}
+	return enabled
+}
+
+func (a *App) setAuthInputPrompt() {
+	if a == nil {
+		return
+	}
+	a.authInput.Prompt = fmt.Sprintf("  %s: ", T("auth_gate_password"))
+}
+
+func (a App) connectWithPassword(password string) tea.Cmd {
+	return func() tea.Msg {
+		a.client.SetSecretKey(password)
+		cfg, errGetConfig := a.client.GetConfig()
+		return authConnectMsg{cfg: cfg, err: errGetConfig}
+	}
 }
 
 // Run starts the TUI application.
 // output specifies where bubbletea renders. If nil, defaults to os.Stdout.
-// Pass the real terminal stdout here when os.Stdout has been redirected.
 func Run(port int, secretKey string, hook *LogHook, output io.Writer) error {
 	if output == nil {
 		output = os.Stdout

internal/tui/client.go

@@ -5,6 +5,8 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/url"
+	"strconv"
 	"strings"
 	"time"
 )
@@ -20,13 +22,18 @@ type Client struct {
 func NewClient(port int, secretKey string) *Client {
 	return &Client{
 		baseURL:   fmt.Sprintf("http://127.0.0.1:%d", port),
-		secretKey: secretKey,
+		secretKey: strings.TrimSpace(secretKey),
 		http: &http.Client{
 			Timeout: 10 * time.Second,
 		},
 	}
 }
 
+// SetSecretKey updates management API bearer token used by this client.
+func (c *Client) SetSecretKey(secretKey string) {
+	c.secretKey = strings.TrimSpace(secretKey)
+}
+
 func (c *Client) doRequest(method, path string, body io.Reader) ([]byte, int, error) {
 	url := c.baseURL + path
 	req, err := http.NewRequest(method, url, body)
@@ -150,7 +157,10 @@ func (c *Client) GetAuthFiles() ([]map[string]any, error) {
 
 // DeleteAuthFile deletes a single auth file by name.
 func (c *Client) DeleteAuthFile(name string) error {
-	_, code, err := c.doRequest("DELETE", "/v0/management/auth-files?name="+name, nil)
+	query := url.Values{}
+	query.Set("name", name)
+	path := "/v0/management/auth-files?" + query.Encode()
+	_, code, err := c.doRequest("DELETE", path, nil)
 	if err != nil {
 		return err
 	}
@@ -176,12 +186,57 @@ func (c *Client) PatchAuthFileFields(name string, fields map[string]any) error {
 }
 
 // GetLogs fetches log lines from the server.
-func (c *Client) GetLogs(cutoff int64, limit int) (map[string]any, error) {
-	path := fmt.Sprintf("/v0/management/logs?limit=%d", limit)
-	if cutoff > 0 {
-		path += fmt.Sprintf("&cutoff=%d", cutoff)
+func (c *Client) GetLogs(after int64, limit int) ([]string, int64, error) {
+	query := url.Values{}
+	if limit > 0 {
+		query.Set("limit", strconv.Itoa(limit))
 	}
-	return c.getJSON(path)
+	if after > 0 {
+		query.Set("after", strconv.FormatInt(after, 10))
+	}
+
+	path := "/v0/management/logs"
+	encodedQuery := query.Encode()
+	if encodedQuery != "" {
+		path += "?" + encodedQuery
+	}
+
+	wrapper, err := c.getJSON(path)
+	if err != nil {
+		return nil, after, err
+	}
+
+	lines := []string{}
+	if rawLines, ok := wrapper["lines"]; ok && rawLines != nil {
+		rawJSON, errMarshal := json.Marshal(rawLines)
+		if errMarshal != nil {
+			return nil, after, errMarshal
+		}
+		if errUnmarshal := json.Unmarshal(rawJSON, &lines); errUnmarshal != nil {
+			return nil, after, errUnmarshal
+		}
+	}
+
+	latest := after
+	if rawLatest, ok := wrapper["latest-timestamp"]; ok {
+		switch value := rawLatest.(type) {
+		case float64:
+			latest = int64(value)
+		case json.Number:
+			if parsed, errParse := value.Int64(); errParse == nil {
+				latest = parsed
+			}
+		case int64:
+			latest = value
+		case int:
+			latest = int64(value)
+		}
+	}
+	if latest < after {
+		latest = after
+	}
+
+	return lines, latest, nil
 }
 
 // GetAPIKeys fetches the list of API keys.
@@ -303,7 +358,10 @@ func (c *Client) GetDebug() (bool, error) {
 // GetAuthStatus polls the OAuth session status.
 // Returns status ("wait", "ok", "error") and optional error message.
 func (c *Client) GetAuthStatus(state string) (string, string, error) {
-	wrapper, err := c.getJSON("/v0/management/get-auth-status?state=" + state)
+	query := url.Values{}
+	query.Set("state", state)
+	path := "/v0/management/get-auth-status?" + query.Encode()
+	wrapper, err := c.getJSON(path)
 	if err != nil {
 		return "", "", err
 	}

internal/tui/config_tab.go

@@ -41,6 +41,8 @@ type configDataMsg struct {
 }
 
 type configUpdateMsg struct {
+	path  string
+	value any
 	err   error
 }
 
@@ -132,7 +134,7 @@ func (m configTabModel) handleNormalKey(msg tea.KeyMsg) (configTabModel, tea.Cmd
 			}
 			// Start editing for int/string
 			m.editing = true
-			m.textInput.SetValue(f.value)
+			m.textInput.SetValue(configFieldEditValue(f))
 			m.textInput.Focus()
 			m.viewport.SetContent(m.renderContent())
 			return m, textinput.Blink
@@ -168,8 +170,13 @@ func (m configTabModel) toggleBool(idx int) tea.Cmd {
 	return func() tea.Msg {
 		f := m.fields[idx]
 		current := f.value == "true"
-		err := m.client.PutBoolField(f.apiPath, !current)
-		return configUpdateMsg{err: err}
+		newValue := !current
+		errPutBool := m.client.PutBoolField(f.apiPath, newValue)
+		return configUpdateMsg{
+			path:  f.apiPath,
+			value: newValue,
+			err:   errPutBool,
+		}
 	}
 }
 
@@ -177,19 +184,36 @@ func (m configTabModel) submitEdit(idx int, newValue string) tea.Cmd {
 	return func() tea.Msg {
 		f := m.fields[idx]
 		var err error
+		var value any
 		switch f.kind {
 		case "int":
-			v, parseErr := strconv.Atoi(newValue)
-			if parseErr != nil {
-				return configUpdateMsg{err: fmt.Errorf("%s: %s", T("invalid_int"), newValue)}
+			valueInt, errAtoi := strconv.Atoi(newValue)
+			if errAtoi != nil {
+				return configUpdateMsg{
+					path: f.apiPath,
+					err:  fmt.Errorf("%s: %s", T("invalid_int"), newValue),
 				}
-			err = m.client.PutIntField(f.apiPath, v)
+			}
+			value = valueInt
+			err = m.client.PutIntField(f.apiPath, valueInt)
 		case "string":
+			value = newValue
 			err = m.client.PutStringField(f.apiPath, newValue)
 		}
-		return configUpdateMsg{err: err}
+		return configUpdateMsg{
+			path:  f.apiPath,
+			value: value,
+			err:   err,
 		}
 	}
+}
+
+func configFieldEditValue(f configField) string {
+	if rawString, ok := f.rawValue.(string); ok {
+		return rawString
+	}
+	return f.value
+}
 
 func (m *configTabModel) SetSize(w, h int) {
 	m.width = w
@@ -334,8 +358,10 @@ func (m configTabModel) parseConfig(cfg map[string]any) []configField {
 
 	// AMP settings
 	if amp, ok := cfg["ampcode"].(map[string]any); ok {
-		fields = append(fields, configField{"AMP Upstream URL", "ampcode/upstream-url", "string", getString(amp, "upstream-url"), nil})
-		fields = append(fields, configField{"AMP Upstream API Key", "ampcode/upstream-api-key", "string", maskIfNotEmpty(getString(amp, "upstream-api-key")), nil})
+		upstreamURL := getString(amp, "upstream-url")
+		upstreamAPIKey := getString(amp, "upstream-api-key")
+		fields = append(fields, configField{"AMP Upstream URL", "ampcode/upstream-url", "string", upstreamURL, upstreamURL})
+		fields = append(fields, configField{"AMP Upstream API Key", "ampcode/upstream-api-key", "string", maskIfNotEmpty(upstreamAPIKey), upstreamAPIKey})
 		fields = append(fields, configField{"AMP Restrict Mgmt Localhost", "ampcode/restrict-management-to-localhost", "bool", fmt.Sprintf("%v", getBool(amp, "restrict-management-to-localhost")), nil})
 	}
 

internal/tui/i18n.go

@@ -86,6 +86,13 @@ var zhStrings = map[string]string{
 	"status_left":                 " CLIProxyAPI 管理终端",
 	"status_right":                "Tab/Shift+Tab: 切换 • L: 语言 • q/Ctrl+C: 退出 ",
 	"initializing_tui":            "正在初始化...",
+	"auth_gate_title":             "🔐 连接管理 API",
+	"auth_gate_help":              " 请输入管理密码并按 Enter 连接",
+	"auth_gate_password":          "密码",
+	"auth_gate_enter":             " Enter: 连接 • q/Ctrl+C: 退出 • L: 语言",
+	"auth_gate_connecting":        "正在连接...",
+	"auth_gate_connect_fail":      "连接失败：%s",
+	"auth_gate_password_required": "请输入密码",
 
 	// ── Dashboard ──
 	"dashboard_title":  "📊 仪表盘",
@@ -230,6 +237,13 @@ var enStrings = map[string]string{
 	"status_left":                 " CLIProxyAPI Management TUI",
 	"status_right":                "Tab/Shift+Tab: switch • L: lang • q/Ctrl+C: quit ",
 	"initializing_tui":            "Initializing...",
+	"auth_gate_title":             "🔐 Connect Management API",
+	"auth_gate_help":              " Enter management password and press Enter to connect",
+	"auth_gate_password":          "Password",
+	"auth_gate_enter":             " Enter: connect • q/Ctrl+C: quit • L: lang",
+	"auth_gate_connecting":        "Connecting...",
+	"auth_gate_connect_fail":      "Connection failed: %s",
+	"auth_gate_password_required": "password is required",
 
 	// ── Dashboard ──
 	"dashboard_title":  "📊 Dashboard",

internal/tui/logs_tab.go

@@ -3,13 +3,15 @@ package tui
 import (
 	"fmt"
 	"strings"
+	"time"
 
 	"github.com/charmbracelet/bubbles/viewport"
 	tea "github.com/charmbracelet/bubbletea"
 )
 
-// logsTabModel displays real-time log lines from the logrus hook.
+// logsTabModel displays real-time log lines from hook/API source.
 type logsTabModel struct {
+	client     *Client
 	hook       *LogHook
 	viewport   viewport.Model
 	lines      []string
@@ -19,13 +21,22 @@ type logsTabModel struct {
 	height     int
 	ready      bool
 	filter     string // "", "debug", "info", "warn", "error"
+	after      int64
+	lastErr    error
 }
 
-// logLineMsg carries a new log line from the logrus hook channel.
+type logsPollMsg struct {
+	lines  []string
+	latest int64
+	err    error
+}
+
+type logsTickMsg struct{}
 type logLineMsg string
 
-func newLogsTabModel(hook *LogHook) logsTabModel {
+func newLogsTabModel(client *Client, hook *LogHook) logsTabModel {
 	return logsTabModel{
+		client:     client,
 		hook:       hook,
 		maxLines:   5000,
 		autoScroll: true,
@@ -33,11 +44,31 @@ func newLogsTabModel(hook *LogHook) logsTabModel {
 }
 
 func (m logsTabModel) Init() tea.Cmd {
+	if m.hook != nil {
 		return m.waitForLog
 	}
+	return m.fetchLogs
+}
+
+func (m logsTabModel) fetchLogs() tea.Msg {
+	lines, latest, err := m.client.GetLogs(m.after, 200)
+	return logsPollMsg{
+		lines:  lines,
+		latest: latest,
+		err:    err,
+	}
+}
+
+func (m logsTabModel) waitForNextPoll() tea.Cmd {
+	return tea.Tick(2*time.Second, func(_ time.Time) tea.Msg {
+		return logsTickMsg{}
+	})
+}
 
-// waitForLog listens on the hook channel and returns a logLineMsg.
 func (m logsTabModel) waitForLog() tea.Msg {
+	if m.hook == nil {
+		return nil
+	}
 	line, ok := <-m.hook.Chan()
 	if !ok {
 		return nil
@@ -50,6 +81,32 @@ func (m logsTabModel) Update(msg tea.Msg) (logsTabModel, tea.Cmd) {
 	case localeChangedMsg:
 		m.viewport.SetContent(m.renderLogs())
 		return m, nil
+	case logsTickMsg:
+		if m.hook != nil {
+			return m, nil
+		}
+		return m, m.fetchLogs
+	case logsPollMsg:
+		if m.hook != nil {
+			return m, nil
+		}
+		if msg.err != nil {
+			m.lastErr = msg.err
+		} else {
+			m.lastErr = nil
+			m.after = msg.latest
+			if len(msg.lines) > 0 {
+				m.lines = append(m.lines, msg.lines...)
+				if len(m.lines) > m.maxLines {
+					m.lines = m.lines[len(m.lines)-m.maxLines:]
+				}
+			}
+		}
+		m.viewport.SetContent(m.renderLogs())
+		if m.autoScroll {
+			m.viewport.GotoBottom()
+		}
+		return m, m.waitForNextPoll()
 	case logLineMsg:
 		m.lines = append(m.lines, string(msg))
 		if len(m.lines) > m.maxLines {
@@ -71,6 +128,7 @@ func (m logsTabModel) Update(msg tea.Msg) (logsTabModel, tea.Cmd) {
 			return m, nil
 		case "c":
 			m.lines = nil
+			m.lastErr = nil
 			m.viewport.SetContent(m.renderLogs())
 			return m, nil
 		case "1":
@@ -151,6 +209,11 @@ func (m logsTabModel) renderLogs() string {
 	sb.WriteString(strings.Repeat("─", m.width))
 	sb.WriteString("\n")
 
+	if m.lastErr != nil {
+		sb.WriteString(errorStyle.Render("⚠ Error: " + m.lastErr.Error()))
+		sb.WriteString("\n")
+	}
+
 	if len(m.lines) == 0 {
 		sb.WriteString(subtitleStyle.Render(T("logs_waiting")))
 		return sb.String()