`cline doctor` command: terminal shift enter support + auto updates (#6883)

* terminal shift enter support

* not needed

* detecting windows

* removing enhancedkeyboard

* removing enhanced keyboard

* ghostty

* proper ghostty support

* docs for posterity

* better logging

* removing md

* doctor command

* adding arguments for sync/async for doctor and keyboard setup - and moved keyboard setup to doctor command

* doctor help

* cleaning up logging and making things more explicit

* language and positioning

cli/cmd/cline/main.go

@@ -99,12 +99,7 @@ see the manual page: man cline`,
 
 				// Check if user has credentials configured
 				if !isUserReadyToUse(ctx, instanceAddress) {
-					// Create renderer for welcome messages
-					renderer := display.NewRenderer(global.Config.OutputFormat)
-
-					markdown := "## hey there! looks like you're new here. let's get you set up"
-					rendered := renderer.RenderMarkdown(markdown)
-					fmt.Printf("\n%s\n\n", rendered)
+					fmt.Printf("\n\033[90mHey there! Looks like you're new here. Let's get you set up\033[0m\n\n")
 
 					if err := auth.HandleAuthMenuNoArgs(ctx); err != nil {
 						// Check if user cancelled - exit cleanly
@@ -119,9 +114,7 @@ see the manual page: man cline`,
 						return fmt.Errorf("credentials still not configured - please run 'cline auth' to complete setup")
 					}
 
-					markdown = "## ✓ setup complete, you can now use the cline cli"
-					rendered = renderer.RenderMarkdown(markdown)
-					fmt.Printf("\n%s\n\n", rendered)
+					fmt.Printf("\n\033[90m✓ Setup complete, you can now use the Cline CLI\033[0m\n\n")
 				}
 			} else {
 				// User specified --address flag, use that
@@ -187,6 +180,7 @@ see the manual page: man cline`,
 	rootCmd.AddCommand(cli.NewVersionCommand())
 	rootCmd.AddCommand(cli.NewAuthCommand())
 	rootCmd.AddCommand(cli.NewLogsCommand())
+	rootCmd.AddCommand(cli.NewDoctorCommand())
 
 	if err := rootCmd.ExecuteContext(context.Background()); err != nil {
 		os.Exit(1)

cli/go.mod

@@ -8,6 +8,7 @@ require (
 	github.com/charmbracelet/bubbletea v1.3.6
 	github.com/charmbracelet/glamour v0.10.0
 	github.com/charmbracelet/huh v0.7.1-0.20251005153135-a01a1e304532
+	github.com/charmbracelet/lipgloss v1.1.1-0.20250404203927-76690c660834
 	github.com/cline/grpc-go v0.0.0
 	github.com/glebarez/go-sqlite v1.22.0
 	github.com/spf13/cobra v1.8.0
@@ -24,7 +25,6 @@ require (
 	github.com/aymerick/douceur v0.2.0 // indirect
 	github.com/catppuccin/go v0.3.0 // indirect
 	github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc // indirect
-	github.com/charmbracelet/lipgloss v1.1.1-0.20250404203927-76690c660834 // indirect
 	github.com/charmbracelet/x/ansi v0.9.3 // indirect
 	github.com/charmbracelet/x/cellbuf v0.0.13 // indirect
 	github.com/charmbracelet/x/exp/slice v0.0.0-20250327172914-2fdc97757edf // indirect

cli/pkg/cli/doctor.go

@@ -0,0 +1,62 @@
+package cli
+
+import (
+	"fmt"
+
+	"github.com/cline/cli/pkg/cli/global"
+	"github.com/cline/cli/pkg/cli/terminal"
+	"github.com/cline/cli/pkg/cli/updater"
+	"github.com/spf13/cobra"
+)
+
+// NewDoctorCommand creates the doctor command
+func NewDoctorCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:     "doctor",
+		Aliases: []string{"d"},
+		Short:   "Check system health and diagnose problems",
+		Long: `Check the health of your Cline CLI installation and diagnose problems.
+
+Currently this command performs the following checks and fixes:
+
+Terminal Configuration:
+  - Detects your terminal emulator (VS Code, Cursor, Ghostty, Kitty, WezTerm, Alacritty)
+  - Configures shift+enter to insert newlines in multiline input
+  - Creates backups before modifying configuration files
+  - Supported terminals: VS Code, Cursor, Ghostty, Kitty, WezTerm, Alacritty
+  - iTerm2 works by default, Terminal.app requires manual setup
+
+CLI Updates:
+  - Checks npm registry for the latest version
+  - Automatically installs updates via npm if available
+  - Respects NO_AUTO_UPDATE environment variable
+  - Skipped in CI environments
+
+Note: Future versions will include additional health checks for Node.js version,
+npm availability, Cline Core connectivity, database integrity, and more.`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return runDoctorChecks()
+		},
+	}
+
+	return cmd
+}
+
+// runDoctorChecks performs all doctor diagnostics and configuration
+func runDoctorChecks() error {
+	fmt.Println("\n\033[1mCline Doctor - System Health Check\033[0m\n")
+
+	// Configure terminal keybindings (terminal.go prints its own status)
+	fmt.Println("\033[90m━━━ Terminal Configuration ━━━\033[0m\n")
+	terminal.SetupKeyboardSync()
+
+	// Check for updates (updater.go prints its own status)
+	fmt.Println("\n\033[90m━━━ CLI Updates ━━━\033[0m\n")
+	updater.CheckAndUpdateSync(global.Config.Verbose, true)
+
+	// Summary
+	fmt.Println("\n\033[90m━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\033[0m")
+	fmt.Println("\n\033[32m✓ Health check complete\033[0m\n")
+
+	return nil
+}

cli/pkg/cli/terminal/keyboard.go

@@ -0,0 +1,688 @@
+package terminal
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"sync"
+)
+
+// KeyboardProtocol manages enhanced keyboard protocol support for detecting
+// modified keys like shift+enter across all major terminals.
+type KeyboardProtocol struct {
+	enabled bool
+	mu      sync.Mutex
+}
+
+var globalProtocol = &KeyboardProtocol{}
+
+// EnableEnhancedKeyboard enables enhanced keyboard protocols to support
+// shift+enter and other modified keys across all major terminals:
+// - VS Code integrated terminal
+// - iTerm2
+// - Terminal.app
+// - Ghostty
+// - Kitty
+// - WezTerm
+// - Alacritty
+// - foot
+// - xterm
+//
+// This function is safe to call multiple times and handles cleanup automatically.
+// It enables both modifyOtherKeys (xterm protocol) and Kitty keyboard protocol
+// for maximum compatibility.
+func EnableEnhancedKeyboard() {
+	globalProtocol.mu.Lock()
+	defer globalProtocol.mu.Unlock()
+
+	if globalProtocol.enabled {
+		return // Already enabled
+	}
+
+	// Check if we're in a TTY (not piped/redirected)
+	if !isatty(os.Stdin.Fd()) {
+		return
+	}
+
+	// Enable modifyOtherKeys mode 2
+	// This tells xterm-compatible terminals (VS Code, iTerm2, Terminal.app, etc.)
+	// to send escape sequences for modified keys including shift+enter
+	// Format: CSI > 4 ; 2 m
+	// - Mode 2 enables for ALL keys including well-known ones
+	fmt.Print("\x1b[>4;2m")
+
+	// Also enable Kitty keyboard protocol for terminals that support it
+	// This is a more modern protocol supported by Kitty, Ghostty, WezTerm, foot, etc.
+	// Format: CSI = <flags> u where flags=1 means "disambiguate escape codes"
+	// This makes shift+enter distinguishable from plain enter
+	fmt.Print("\x1b[=1u")
+
+	globalProtocol.enabled = true
+}
+
+// DisableEnhancedKeyboard restores the terminal to its default keyboard mode.
+// This should be called on program exit to be a good citizen.
+func DisableEnhancedKeyboard() {
+	globalProtocol.mu.Lock()
+	defer globalProtocol.mu.Unlock()
+
+	if !globalProtocol.enabled {
+		return
+	}
+
+	// Disable modifyOtherKeys (restore to mode 0)
+	fmt.Print("\x1b[>4;0m")
+
+	// Disable Kitty keyboard protocol
+	fmt.Print("\x1b[<u")
+
+	globalProtocol.enabled = false
+}
+
+// isatty checks if a file descriptor is a terminal
+func isatty(fd uintptr) bool {
+	// Use the standard library's terminal package
+	// This works across all platforms (Unix, Windows, etc.)
+	fileInfo, err := os.Stdin.Stat()
+	if err != nil {
+		return false
+	}
+	return (fileInfo.Mode() & os.ModeCharDevice) != 0
+}
+
+// SetupKeyboard detects the current terminal and configures keybindings if needed.
+// Runs in background and doesn't block. Prints status when configs are modified.
+func SetupKeyboard() {
+	go setupKeyboardInternal()
+}
+
+// SetupKeyboardSync is the synchronous version used by doctor command.
+// Blocks until complete and prints status for all terminals.
+func SetupKeyboardSync() {
+	setupKeyboardInternal()
+}
+
+func setupKeyboardInternal() {
+	terminalName := DetectTerminal()
+
+	switch terminalName {
+	case "vscode":
+		// VS Code and Cursor use the same TERM_PROGRAM value
+		modified, path := SetupVSCodeKeybindings()
+		if modified {
+			fmt.Printf("\033[90mConfigured shift+enter for\033[0m VS Code \033[90mterminal\033[0m\n")
+			fmt.Printf("\033[90m  →\033[0m %s\n", path)
+		} else if path != "" {
+			fmt.Printf("\033[90m✓ VS Code shift+enter already configured\033[0m\n")
+			fmt.Printf("\033[90m  →\033[0m %s\n", path)
+		}
+
+		modified, path = SetupCursorKeybindings()
+		if modified {
+			fmt.Printf("\033[90mConfigured shift+enter for\033[0m Cursor \033[90mterminal\033[0m\n")
+			fmt.Printf("\033[90m  →\033[0m %s\n", path)
+		} else if path != "" {
+			fmt.Printf("\033[90m✓ Cursor shift+enter already configured\033[0m\n")
+			fmt.Printf("\033[90m  →\033[0m %s\n", path)
+		}
+
+	case "ghostty":
+		modified, path := SetupGhosttyKeybindings()
+		if modified {
+			fmt.Printf("\033[90mConfigured shift+enter for\033[0m Ghostty \033[90mterminal\033[0m\n")
+			fmt.Printf("\033[90m  →\033[0m %s\n", path)
+			fmt.Printf("\033[90m  Fully restart Ghostty (quit all windows) for changes to take effect\033[0m\n")
+		} else if path != "" {
+			fmt.Printf("\033[90m✓ Ghostty shift+enter already configured\033[0m\n")
+			fmt.Printf("\033[90m  →\033[0m %s\n", path)
+		}
+
+	case "wezterm":
+		modified, path := SetupWezTermKeybindings()
+		if modified {
+			fmt.Printf("\033[90mConfigured shift+enter for\033[0m WezTerm \033[90mterminal\033[0m\n")
+			fmt.Printf("\033[90m  →\033[0m %s\n", path)
+		} else if path != "" {
+			fmt.Printf("\033[90m✓ WezTerm shift+enter already configured\033[0m\n")
+			fmt.Printf("\033[90m  →\033[0m %s\n", path)
+		}
+
+	case "alacritty":
+		modified, path := SetupAlacrittyKeybindings()
+		if modified {
+			fmt.Printf("\033[90mConfigured shift+enter for\033[0m Alacritty \033[90mterminal\033[0m\n")
+			fmt.Printf("\033[90m  →\033[0m %s\n", path)
+		} else if path != "" {
+			fmt.Printf("\033[90m✓ Alacritty shift+enter already configured\033[0m\n")
+			fmt.Printf("\033[90m  →\033[0m %s\n", path)
+		}
+
+	case "kitty":
+		modified, path := SetupKittyKeybindings()
+		if modified {
+			fmt.Printf("\033[90mConfigured shift+enter for\033[0m Kitty \033[90mterminal\033[0m\n")
+			fmt.Printf("\033[90m  →\033[0m %s\n", path)
+		} else if path != "" {
+			fmt.Printf("\033[90m✓ Kitty shift+enter already configured\033[0m\n")
+			fmt.Printf("\033[90m  →\033[0m %s\n", path)
+		}
+
+	case "iterm2":
+		fmt.Printf("\033[90m✓ iTerm2 shift+enter works by default (maps to alt+enter)\033[0m\n")
+
+	case "terminal.app":
+		fmt.Printf("\033[90m⚠ Terminal.app requires manual configuration\033[0m\n")
+		fmt.Printf("\033[90m  See: Terminal → Preferences → Profiles → Keyboard\033[0m\n")
+
+	case "unknown":
+		fmt.Printf("\033[90mℹ Terminal not detected - use alt+enter or ctrl+j for newlines\033[0m\n")
+	}
+}
+
+// getVSCodeConfigPath returns the platform-specific path to VS Code's User directory
+func getVSCodeConfigPath() (string, error) {
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return "", err
+	}
+
+	switch runtime.GOOS {
+	case "darwin":
+		return filepath.Join(home, "Library", "Application Support", "Code", "User"), nil
+	case "windows":
+		appData := os.Getenv("APPDATA")
+		if appData == "" {
+			appData = filepath.Join(home, "AppData", "Roaming")
+		}
+		return filepath.Join(appData, "Code", "User"), nil
+	default: // linux, freebsd, etc.
+		return filepath.Join(home, ".config", "Code", "User"), nil
+	}
+}
+
+// getCursorConfigPath returns the platform-specific path to Cursor's User directory
+func getCursorConfigPath() (string, error) {
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return "", err
+	}
+
+	switch runtime.GOOS {
+	case "darwin":
+		return filepath.Join(home, "Library", "Application Support", "Cursor", "User"), nil
+	case "windows":
+		appData := os.Getenv("APPDATA")
+		if appData == "" {
+			appData = filepath.Join(home, "AppData", "Roaming")
+		}
+		return filepath.Join(appData, "Cursor", "User"), nil
+	default: // linux, freebsd, etc.
+		return filepath.Join(home, ".config", "Cursor", "User"), nil
+	}
+}
+
+// DetectTerminal identifies which terminal emulator is currently running
+func DetectTerminal() string {
+	// Check TERM_PROGRAM (works for most terminals)
+	termProgram := os.Getenv("TERM_PROGRAM")
+	switch termProgram {
+	case "vscode":
+		return "vscode" // Also covers Cursor (uses same value)
+	case "WezTerm":
+		return "wezterm"
+	case "ghostty":
+		return "ghostty"
+	case "iTerm.app":
+		return "iterm2"
+	case "Apple_Terminal":
+		return "terminal.app"
+	}
+
+	// Kitty doesn't set TERM_PROGRAM, check KITTY_WINDOW_ID
+	if os.Getenv("KITTY_WINDOW_ID") != "" {
+		return "kitty"
+	}
+
+	// Alacritty doesn't set TERM_PROGRAM, check ALACRITTY_SOCKET
+	if os.Getenv("ALACRITTY_SOCKET") != "" {
+		return "alacritty"
+	}
+
+	// Ghostty fallback (cross-platform - more reliable than TERM_PROGRAM)
+	if os.Getenv("GHOSTTY_RESOURCES_DIR") != "" {
+		return "ghostty"
+	}
+
+	// Alacritty fallback
+	if os.Getenv("ALACRITTY_LOG") != "" {
+		return "alacritty"
+	}
+
+	// Check TERM variable as last resort
+	term := os.Getenv("TERM")
+	if strings.Contains(term, "kitty") {
+		return "kitty"
+	}
+	if term == "alacritty" {
+		return "alacritty"
+	}
+	if term == "xterm-ghostty" {
+		return "ghostty"
+	}
+
+	return "unknown"
+}
+
+// VSCodeKeybinding represents a VS Code keyboard shortcut
+type VSCodeKeybinding struct {
+	Key     string                 `json:"key"`
+	Command string                 `json:"command"`
+	Args    map[string]interface{} `json:"args,omitempty"`
+	When    string                 `json:"when,omitempty"`
+}
+
+// SetupVSCodeKeybindings adds shift+enter support to VS Code's integrated terminal
+// by modifying the user's keybindings.json file.
+// Returns (wasModified, configPath) to allow caller to log the change.
+func SetupVSCodeKeybindings() (bool, string) {
+	// Get platform-specific VS Code config path
+	configDir, err := getVSCodeConfigPath()
+	if err != nil {
+		return false, ""
+	}
+
+	keybindingsPath := filepath.Join(configDir, "keybindings.json")
+
+	// Check if VS Code is installed (keybindings file or parent dir exists)
+	if _, err := os.Stat(filepath.Dir(keybindingsPath)); os.IsNotExist(err) {
+		// VS Code not installed, skip silently
+		return false, ""
+	}
+
+	// Read existing keybindings
+	var keybindings []VSCodeKeybinding
+
+	data, err := os.ReadFile(keybindingsPath)
+	if err != nil {
+		if !os.IsNotExist(err) {
+			return false, ""
+		}
+		// File doesn't exist, start with empty array
+		keybindings = []VSCodeKeybinding{}
+	} else {
+		// Parse existing keybindings
+		if err := json.Unmarshal(data, &keybindings); err != nil {
+			// If parse fails, don't modify the file
+			return false, ""
+		}
+	}
+
+	// Check if shift+enter binding already exists
+	for _, kb := range keybindings {
+		if kb.Key == "shift+enter" && kb.Command == "workbench.action.terminal.sendSequence" {
+			// Already configured
+			return false, keybindingsPath
+		}
+	}
+
+	// Add shift+enter keybinding
+	newBinding := VSCodeKeybinding{
+		Key:     "shift+enter",
+		Command: "workbench.action.terminal.sendSequence",
+		Args: map[string]interface{}{
+			"text": "\u001b\n", // ESC + newline (alt+enter sequence)
+		},
+		When: "terminalFocus",
+	}
+
+	keybindings = append(keybindings, newBinding)
+
+	// Create backup
+	if data != nil {
+		backupPath := keybindingsPath + ".backup"
+		_ = os.WriteFile(backupPath, data, 0644)
+	}
+
+	// Write updated keybindings
+	updatedData, err := json.MarshalIndent(keybindings, "", "  ")
+	if err != nil {
+		return false, ""
+	}
+
+	// Ensure parent directory exists
+	if err := os.MkdirAll(filepath.Dir(keybindingsPath), 0755); err != nil {
+		return false, ""
+	}
+
+	if err := os.WriteFile(keybindingsPath, updatedData, 0644); err != nil {
+		return false, ""
+	}
+
+	return true, keybindingsPath
+}
+
+// SetupCursorKeybindings adds shift+enter support to Cursor's integrated terminal
+// by modifying the user's keybindings.json file.
+// Cursor is a fork of VS Code, so it uses the same keybinding format.
+// Returns (wasModified, configPath) to allow caller to log the change.
+func SetupCursorKeybindings() (bool, string) {
+	// Get platform-specific Cursor config path
+	configDir, err := getCursorConfigPath()
+	if err != nil {
+		return false, ""
+	}
+
+	keybindingsPath := filepath.Join(configDir, "keybindings.json")
+
+	// Check if Cursor is installed (keybindings file or parent dir exists)
+	if _, err := os.Stat(filepath.Dir(keybindingsPath)); os.IsNotExist(err) {
+		// Cursor not installed, skip silently
+		return false, ""
+	}
+
+	// Read existing keybindings
+	var keybindings []VSCodeKeybinding
+
+	data, err := os.ReadFile(keybindingsPath)
+	if err != nil {
+		if !os.IsNotExist(err) {
+			return false, ""
+		}
+		// File doesn't exist, start with empty array
+		keybindings = []VSCodeKeybinding{}
+	} else {
+		// Parse existing keybindings
+		if err := json.Unmarshal(data, &keybindings); err != nil {
+			// If parse fails, don't modify the file
+			return false, ""
+		}
+	}
+
+	// Check if shift+enter binding already exists
+	for _, kb := range keybindings {
+		if kb.Key == "shift+enter" && kb.Command == "workbench.action.terminal.sendSequence" {
+			// Already configured
+			return false, keybindingsPath
+		}
+	}
+
+	// Add shift+enter keybinding
+	newBinding := VSCodeKeybinding{
+		Key:     "shift+enter",
+		Command: "workbench.action.terminal.sendSequence",
+		Args: map[string]interface{}{
+			"text": "\u001b\n", // ESC + newline (alt+enter sequence)
+		},
+		When: "terminalFocus",
+	}
+
+	keybindings = append(keybindings, newBinding)
+
+	// Create backup
+	if data != nil {
+		backupPath := keybindingsPath + ".backup"
+		_ = os.WriteFile(backupPath, data, 0644)
+	}
+
+	// Write updated keybindings
+	updatedData, err := json.MarshalIndent(keybindings, "", "  ")
+	if err != nil {
+		return false, ""
+	}
+
+	// Ensure parent directory exists
+	if err := os.MkdirAll(filepath.Dir(keybindingsPath), 0755); err != nil {
+		return false, ""
+	}
+
+	if err := os.WriteFile(keybindingsPath, updatedData, 0644); err != nil {
+		return false, ""
+	}
+
+	return true, keybindingsPath
+}
+
+// SetupGhosttyKeybindings adds shift+enter support to Ghostty terminal
+// by appending to the user's config file.
+// Returns (wasModified, configPath) to allow caller to log the change.
+func SetupGhosttyKeybindings() (bool, string) {
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return false, ""
+	}
+
+	// Ghostty config location: ~/.config/ghostty/config
+	configPath := filepath.Join(home, ".config", "ghostty", "config")
+
+	// Check if config directory exists
+	configDir := filepath.Dir(configPath)
+	if _, err := os.Stat(configDir); os.IsNotExist(err) {
+		// Ghostty not installed, skip silently
+		return false, ""
+	}
+
+	// Read existing config if it exists
+	var existingContent []byte
+	if data, err := os.ReadFile(configPath); err == nil {
+		existingContent = data
+		// Check if shift+enter already configured
+		if strings.Contains(string(data), "keybind = shift+enter") {
+			return false, configPath
+		}
+	}
+
+	// Keybinding to add - send newline character (0x0a)
+	// Ghostty requires \x0a hex escape syntax, verified working
+	keybinding := "keybind = shift+enter=text:\\x0a\n"
+
+	// Append to config
+	newContent := append(existingContent, []byte(keybinding)...)
+
+	// Ensure directory exists
+	if err := os.MkdirAll(configDir, 0755); err != nil {
+		return false, ""
+	}
+
+	// Create backup if file exists
+	if existingContent != nil {
+		backupPath := configPath + ".backup"
+		_ = os.WriteFile(backupPath, existingContent, 0644)
+	}
+
+	// Write updated config
+	if err := os.WriteFile(configPath, newContent, 0644); err != nil {
+		return false, ""
+	}
+
+	return true, configPath
+}
+
+// SetupWezTermKeybindings adds shift+enter support to WezTerm
+// by appending to the user's .wezterm.lua file.
+// Returns (wasModified, configPath)
+func SetupWezTermKeybindings() (bool, string) {
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return false, ""
+	}
+
+	configPath := filepath.Join(home, ".wezterm.lua")
+
+	// Check if WezTerm config exists
+	if _, err := os.Stat(configPath); os.IsNotExist(err) {
+		// WezTerm not configured, skip silently
+		return false, ""
+	}
+
+	// Read existing config
+	data, err := os.ReadFile(configPath)
+	if err != nil {
+		return false, ""
+	}
+
+	// Check if shift+enter already configured
+	if strings.Contains(string(data), "key = 'Enter'") && strings.Contains(string(data), "mods = 'SHIFT'") {
+		return false, configPath
+	}
+
+	// Create backup
+	backupPath := configPath + ".backup"
+	_ = os.WriteFile(backupPath, data, 0644)
+
+	// Keybinding to add (insert before final return statement)
+	keybinding := `
+-- Shift+Enter for newlines (added by Cline CLI)
+config.keys = config.keys or {}
+table.insert(config.keys, {
+  key = 'Enter',
+  mods = 'SHIFT',
+  action = wezterm.action.SendString '\x1b\n',
+})
+`
+
+	content := string(data)
+	// Try to insert before the final return statement
+	if strings.Contains(content, "return config") {
+		content = strings.Replace(content, "return config", keybinding+"\nreturn config", 1)
+	} else {
+		// No return statement, append at end
+		content += keybinding
+	}
+
+	// Write updated config
+	if err := os.WriteFile(configPath, []byte(content), 0644); err != nil {
+		return false, ""
+	}
+
+	return true, configPath
+}
+
+// SetupAlacrittyKeybindings adds shift+enter support to Alacritty
+// by appending to the user's alacritty.yml file.
+// Returns (wasModified, configPath)
+func SetupAlacrittyKeybindings() (bool, string) {
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return false, ""
+	}
+
+	// Try both possible locations
+	configPaths := []string{
+		filepath.Join(home, ".config", "alacritty", "alacritty.yml"),
+		filepath.Join(home, ".config", "alacritty", "alacritty.toml"),
+		filepath.Join(home, ".alacritty.yml"),
+	}
+
+	var configPath string
+	for _, path := range configPaths {
+		if _, err := os.Stat(path); err == nil {
+			configPath = path
+			break
+		}
+	}
+
+	if configPath == "" {
+		// Alacritty not configured, skip silently
+		return false, ""
+	}
+
+	// Read existing config
+	data, err := os.ReadFile(configPath)
+	if err != nil {
+		return false, ""
+	}
+
+	// Check if shift+enter already configured
+	if strings.Contains(string(data), "key: Return") && strings.Contains(string(data), "mods: Shift") {
+		return false, configPath
+	}
+
+	// Create backup
+	backupPath := configPath + ".backup"
+	_ = os.WriteFile(backupPath, data, 0644)
+
+	// Keybinding to add
+	var keybinding string
+	if strings.HasSuffix(configPath, ".yml") || strings.HasSuffix(configPath, ".yaml") {
+		keybinding = `
+# Shift+Enter for newlines (added by Cline CLI)
+key_bindings:
+  - { key: Return, mods: Shift, chars: "\x1b\n" }
+`
+	} else {
+		// TOML format
+		keybinding = `
+# Shift+Enter for newlines (added by Cline CLI)
+[[keyboard.bindings]]
+key = "Return"
+mods = "Shift"
+chars = "\x1b\n"
+`
+	}
+
+	// Append to config
+	newContent := append(data, []byte(keybinding)...)
+
+	// Write updated config
+	if err := os.WriteFile(configPath, newContent, 0644); err != nil {
+		return false, ""
+	}
+
+	return true, configPath
+}
+
+// SetupKittyKeybindings adds shift+enter support to Kitty terminal
+// by appending to the user's kitty.conf file.
+// Returns (wasModified, configPath)
+func SetupKittyKeybindings() (bool, string) {
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return false, ""
+	}
+
+	configPath := filepath.Join(home, ".config", "kitty", "kitty.conf")
+
+	// Check if config directory exists
+	configDir := filepath.Dir(configPath)
+	if _, err := os.Stat(configDir); os.IsNotExist(err) {
+		// Kitty not installed, skip silently
+		return false, ""
+	}
+
+	// Read existing config if it exists
+	var existingContent []byte
+	if data, err := os.ReadFile(configPath); err == nil {
+		existingContent = data
+		// Check if shift+enter already configured
+		if strings.Contains(string(data), "map shift+enter") {
+			return false, configPath
+		}
+	}
+
+	// Keybinding to add
+	keybinding := "# Shift+Enter for newlines (added by Cline CLI)\nmap shift+enter send_text all \\x1b\\n\n"
+
+	// Append to config
+	newContent := append(existingContent, []byte(keybinding)...)
+
+	// Ensure directory exists
+	if err := os.MkdirAll(configDir, 0755); err != nil {
+		return false, ""
+	}
+
+	// Create backup if file exists
+	if existingContent != nil {
+		backupPath := configPath + ".backup"
+		_ = os.WriteFile(backupPath, existingContent, 0644)
+	}
+
+	// Write updated config
+	if err := os.WriteFile(configPath, newContent, 0644); err != nil {
+		return false, ""
+	}
+
+	return true, configPath
+}

cli/pkg/cli/updater/updater.go

@@ -68,7 +68,7 @@ func CheckAndUpdate(isVerbose bool) {
 
 	// Run in background so we don't block CLI startup
 	go func() {
-		if err := checkAndUpdateSync(); err != nil {
+		if err := checkAndUpdateInternal(false); err != nil {
 			if verbose {
 				output.Printf("[updater] Update check failed: %v\n", err)
 			}
@@ -76,15 +76,49 @@ func CheckAndUpdate(isVerbose bool) {
 	}()
 }
 
-func checkAndUpdateSync() error {
+// CheckAndUpdateSync performs a synchronous update check (blocks until complete).
+// If bypassCache is true, ignores the 24-hour cache and always checks npm registry.
+// This is used by the doctor command.
+func CheckAndUpdateSync(isVerbose bool, bypassCache bool) {
+	verbose = isVerbose
+
+	// Skip in CI environments
+	if os.Getenv("CI") != "" {
+		if verbose {
+			output.Printf("[updater] Skipping update check (CI environment)\n")
+		}
+		return
+	}
+
+	// Skip if user disabled auto-updates
+	if os.Getenv("NO_AUTO_UPDATE") != "" {
+		if verbose {
+			output.Printf("[updater] Skipping update check (NO_AUTO_UPDATE set)\n")
+		}
+		return
+	}
+
+	if verbose {
+		output.Printf("[updater] Starting update check...\n")
+	}
+
+	// Run synchronously
+	if err := checkAndUpdateInternal(bypassCache); err != nil {
+		if verbose {
+			output.Printf("[updater] Update check failed: %v\n", err)
+		}
+	}
+}
+
+func checkAndUpdateInternal(bypassCache bool) error {
 	if verbose {
 		output.Printf("[updater] Loading update cache...\n")
 	}
 
 	// Load cache
 	cache, err := loadCache()
-	if err == nil && time.Since(cache.LastCheck) < checkInterval {
-		// Checked recently, skip
+	if !bypassCache && err == nil && time.Since(cache.LastCheck) < checkInterval {
+		// Checked recently, skip (unless cache is bypassed)
 		if verbose {
 			output.Printf("[updater] Cache is fresh (last checked %v ago), skipping\n", time.Since(cache.LastCheck))
 		}