diff --git a/README.md b/README.md
index 0416213..6633461 100644
--- a/README.md
+++ b/README.md
@@ -145,14 +145,38 @@ ktui [flags]
 ktui status [flags]
 ktui export <markdown|csv|json> [flags]
 ktui config <init|path|show|set|help>
-ktui profile <list|current|use|add|rename|remove>
-ktui update <check|install>
+ktui keys
+ktui profile <list|current|use|add|rename|remove|help>
+ktui update <check|install|help>
+ktui completion <bash|zsh|fish|powershell>
 ktui version
-ktui help [status|config|profile|keys|update|export]
+ktui help [command]
 ```
 
 连接到多个 Komari 站点时使用 `ktui profile ...` 管理，并可用 `--profile name` 临时选择。TUI 专属显示参数使用 `--mode sheet|line`。`--realtime-window 1m|5m|10m` 控制 realtime 图表横轴时间范围。一次性拉取摘要使用 `ktui status`，更新检查和安装分别使用 `ktui update check`、`ktui update install`。
 
+## Shell 补全
+
+`ktui completion` 可以生成 Tab 补全脚本。加载后可以补全子命令、常用 flags、枚举值、配置键和已保存的 profile 名称。
+
+当前终端临时启用：
+
+```sh
+source <(ktui completion bash)
+# zsh:
+source <(ktui completion zsh)
+# fish:
+ktui completion fish | source
+```
+
+PowerShell：
+
+```powershell
+ktui completion powershell | Out-String | Invoke-Expression
+```
+
+持久启用时，把对应命令放进 `~/.bashrc`、`~/.zshrc`、fish 配置或 PowerShell profile；也可以把 `ktui completion zsh` 输出保存为 `$fpath` 目录里的 `_ktui` 文件。
+
 ## 配置文件
 
 初始化配置：
diff --git a/cmd/ktui/cobra.go b/cmd/ktui/cobra.go
new file mode 100644
index 0000000..c10bbc5
--- /dev/null
+++ b/cmd/ktui/cobra.go
@@ -0,0 +1,541 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+
+	"ktui/internal/config"
+	"ktui/internal/update"
+)
+
+var (
+	completionShells = []string{"bash", "zsh", "fish", "powershell"}
+
+	cobraExportFormats = []string{"markdown", "csv", "json"}
+	cobraConfigKeys    = []string{
+		"profile",
+		"url",
+		"api-key",
+		"interval",
+		"timeout",
+		"realtime-window",
+		"chart-y-axis",
+		"warn-cpu",
+		"warn-ram",
+		"warn-disk",
+		"warn-expiry-days",
+		"mode",
+		"ascii",
+		"no-color",
+	}
+)
+
+func execute() error {
+	return newRootCommand().Execute()
+}
+
+func newRootCommand() *cobra.Command {
+	root := &cobra.Command{
+		Use:           "ktui",
+		Short:         "Komari terminal UI",
+		SilenceErrors: true,
+		SilenceUsage:  true,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return handleTUI(changedFlagArgs(cmd))
+		},
+	}
+	root.CompletionOptions.DisableDefaultCmd = true
+	root.PersistentFlags().String("config", defaultConfigPath(), "config file path")
+	must(root.MarkPersistentFlagFilename("config"))
+
+	addTUIFlags(root)
+	addConnectionFlagCompletions(root)
+	addTUIFlagCompletions(root)
+
+	root.PersistentPreRunE = func(cmd *cobra.Command, args []string) error {
+		return setConfigEnvFromCommand(cmd)
+	}
+
+	root.AddCommand(
+		newStatusCommand(),
+		newExportCommand(),
+		newConfigCommand(),
+		newProfileCommand(),
+		newUpdateCommand(),
+		newVersionCommand(),
+		newKeysCommand(),
+		newCompletionCommand(),
+	)
+	return root
+}
+
+func newStatusCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "status",
+		Short: "Fetch once and print a node summary",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return handleStatus(changedFlagArgs(cmd))
+		},
+	}
+	addStatusFlags(cmd)
+	addConnectionFlagCompletions(cmd)
+	return cmd
+}
+
+func newExportCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:       "export <markdown|csv|json>",
+		Short:     "Export current node status",
+		ValidArgs: cobraExportFormats,
+		Args:      cobra.RangeArgs(0, 1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if len(args) == 0 {
+				return handleExport(nil)
+			}
+			next := append([]string{args[0]}, changedFlagArgs(cmd)...)
+			return handleExport(next)
+		},
+	}
+	addStatusFlags(cmd)
+	cmd.Flags().StringP("output", "o", "", "write export to a file instead of stdout")
+	must(cmd.MarkFlagFilename("output"))
+	addConnectionFlagCompletions(cmd)
+	return cmd
+}
+
+func newConfigCommand() *cobra.Command {
+	initCmd := &cobra.Command{
+		Use:   "init",
+		Short: "Create the config file",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return handleConfig(append([]string{"init"}, changedFlagArgs(cmd)...))
+		},
+	}
+	initCmd.Flags().Bool("force", false, "overwrite existing config")
+	must(initCmd.RegisterFlagCompletionFunc("force", cobra.NoFileCompletions))
+
+	cmd := &cobra.Command{
+		Use:   "config",
+		Short: "Manage persistent settings",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return handleConfig(nil)
+		},
+	}
+	cmd.AddCommand(
+		initCmd,
+		&cobra.Command{
+			Use:   "path",
+			Short: "Print the config path",
+			Args:  cobra.NoArgs,
+			RunE: func(cmd *cobra.Command, args []string) error {
+				return handleConfig([]string{"path"})
+			},
+		},
+		&cobra.Command{
+			Use:   "show",
+			Short: "Print the config file with secrets redacted",
+			Args:  cobra.NoArgs,
+			RunE: func(cmd *cobra.Command, args []string) error {
+				return handleConfig([]string{"show"})
+			},
+		},
+		&cobra.Command{
+			Use:               "set <key> <value>",
+			Short:             "Set a config value",
+			Args:              cobra.ExactArgs(2),
+			ValidArgsFunction: configSetCompletions,
+			RunE: func(cmd *cobra.Command, args []string) error {
+				return handleConfig([]string{"set", args[0], args[1]})
+			},
+		},
+		&cobra.Command{
+			Use:   "help",
+			Short: "Show config help",
+			Args:  cobra.NoArgs,
+			RunE: func(cmd *cobra.Command, args []string) error {
+				return handleConfig([]string{"help"})
+			},
+		},
+	)
+	return cmd
+}
+
+func newProfileCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "profile",
+		Short: "Manage Komari connection profiles",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return handleProfile(nil)
+		},
+	}
+	cmd.AddCommand(
+		&cobra.Command{
+			Use:   "list",
+			Short: "List configured profiles",
+			Args:  cobra.NoArgs,
+			RunE: func(cmd *cobra.Command, args []string) error {
+				return handleProfile([]string{"list"})
+			},
+		},
+		&cobra.Command{
+			Use:   "current",
+			Short: "Print the active profile",
+			Args:  cobra.NoArgs,
+			RunE: func(cmd *cobra.Command, args []string) error {
+				return handleProfile([]string{"current"})
+			},
+		},
+		&cobra.Command{
+			Use:               "use <name>",
+			Short:             "Switch active profile",
+			Args:              cobra.ExactArgs(1),
+			ValidArgsFunction: profileNameArgCompletions,
+			RunE: func(cmd *cobra.Command, args []string) error {
+				return handleProfile([]string{"use", args[0]})
+			},
+		},
+		newProfileAddCommand(),
+		&cobra.Command{
+			Use:               "rename <old> <new>",
+			Short:             "Rename a profile",
+			Args:              cobra.ExactArgs(2),
+			ValidArgsFunction: profileRenameArgCompletions,
+			RunE: func(cmd *cobra.Command, args []string) error {
+				return handleProfile([]string{"rename", args[0], args[1]})
+			},
+		},
+		&cobra.Command{
+			Use:               "remove <name>",
+			Short:             "Remove a profile",
+			Args:              cobra.ExactArgs(1),
+			ValidArgsFunction: profileNameArgCompletions,
+			RunE: func(cmd *cobra.Command, args []string) error {
+				return handleProfile([]string{"remove", args[0]})
+			},
+		},
+		&cobra.Command{
+			Use:   "help",
+			Short: "Show profile help",
+			Args:  cobra.NoArgs,
+			RunE: func(cmd *cobra.Command, args []string) error {
+				return handleProfile([]string{"help"})
+			},
+		},
+	)
+	return cmd
+}
+
+func newProfileAddCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "add <name>",
+		Short: "Add a profile",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			next := append([]string{"add", args[0]}, changedFlagArgs(cmd)...)
+			return handleProfile(next)
+		},
+	}
+	cmd.Flags().String("url", "", "Komari base URL")
+	cmd.Flags().String("api-key", "", "Komari API key")
+	cmd.Flags().Bool("use", false, "make this profile active")
+	must(cmd.RegisterFlagCompletionFunc("url", cobra.NoFileCompletions))
+	must(cmd.RegisterFlagCompletionFunc("api-key", cobra.NoFileCompletions))
+	must(cmd.RegisterFlagCompletionFunc("use", cobra.NoFileCompletions))
+	cmd.ValidArgsFunction = cobra.NoFileCompletions
+	return cmd
+}
+
+func newUpdateCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "update",
+		Short: "Check or install ktui updates",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return handleUpdate(nil)
+		},
+	}
+	cmd.AddCommand(
+		newUpdateCheckCommand(),
+		newUpdateInstallCommand(),
+		&cobra.Command{
+			Use:   "help",
+			Short: "Show update help",
+			Args:  cobra.NoArgs,
+			RunE: func(cmd *cobra.Command, args []string) error {
+				return handleUpdate([]string{"help"})
+			},
+		},
+	)
+	return cmd
+}
+
+func newUpdateCheckCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "check",
+		Short: "Check for a ktui update",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return handleUpdate(append([]string{"check"}, changedFlagArgs(cmd)...))
+		},
+	}
+	addUpdateFlags(cmd, false)
+	return cmd
+}
+
+func newUpdateInstallCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "install",
+		Short: "Install a ktui update",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return handleUpdate(append([]string{"install"}, changedFlagArgs(cmd)...))
+		},
+	}
+	addUpdateFlags(cmd, true)
+	return cmd
+}
+
+func newVersionCommand() *cobra.Command {
+	return &cobra.Command{
+		Use:   "version",
+		Short: "Print version information",
+		Args:  cobra.NoArgs,
+		Run: func(cmd *cobra.Command, args []string) {
+			printVersion()
+		},
+	}
+}
+
+func newKeysCommand() *cobra.Command {
+	return &cobra.Command{
+		Use:   "keys",
+		Short: "Show TUI key bindings",
+		Args:  cobra.NoArgs,
+		Run: func(cmd *cobra.Command, args []string) {
+			printKeysHelp()
+		},
+	}
+}
+
+func newCompletionCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:                   "completion <bash|zsh|fish|powershell>",
+		Short:                 "Generate shell completion scripts",
+		ValidArgs:             completionShells,
+		Args:                  cobra.RangeArgs(0, 1),
+		DisableFlagsInUseLine: true,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if len(args) == 0 {
+				return cmd.Help()
+			}
+			switch args[0] {
+			case "bash":
+				return cmd.Root().GenBashCompletion(os.Stdout)
+			case "zsh":
+				return cmd.Root().GenZshCompletion(os.Stdout)
+			case "fish":
+				return cmd.Root().GenFishCompletion(os.Stdout, true)
+			case "powershell":
+				return cmd.Root().GenPowerShellCompletionWithDesc(os.Stdout)
+			default:
+				return fmt.Errorf("unknown completion shell %q: use bash, zsh, fish, or powershell", args[0])
+			}
+		},
+	}
+	return cmd
+}
+
+func addTUIFlags(cmd *cobra.Command) {
+	flags := cmd.Flags()
+	addConnectionFlags(flags, 10*time.Second)
+	flags.Duration("interval", 5*time.Second, "refresh interval")
+	flags.Duration("realtime-window", time.Minute, "realtime chart time window: 1m, 5m, or 10m")
+	flags.String("chart-y-axis", "absolute", "percent chart Y axis mode: absolute or relative")
+	flags.String("mode", "sheet", "view mode: sheet or line")
+	flags.Bool("ascii", false, "use ASCII-only rendering for terminals/fonts with Unicode issues")
+	flags.Bool("no-color", false, "disable ANSI color and inverse video")
+}
+
+func addStatusFlags(cmd *cobra.Command) {
+	addConnectionFlags(cmd.Flags(), 10*time.Second)
+}
+
+func addConnectionFlags(flags *pflag.FlagSet, timeoutDefault time.Duration) {
+	flags.String("profile", config.DefaultProfile, "profile name")
+	flags.String("url", "", "Komari base URL")
+	flags.String("api-key", "", "Komari API key (sent as Bearer token)")
+	flags.Duration("timeout", timeoutDefault, "HTTP timeout")
+}
+
+func addUpdateFlags(cmd *cobra.Command, withTag bool) {
+	cmd.Flags().String("api-url", update.DefaultAPIBaseURL, "Gitea repository API URL")
+	cmd.Flags().Duration("timeout", 60*time.Second, "update HTTP timeout")
+	if withTag {
+		cmd.Flags().String("tag", "", "install a specific release tag instead of the latest release")
+		must(cmd.RegisterFlagCompletionFunc("tag", cobra.NoFileCompletions))
+	}
+	must(cmd.RegisterFlagCompletionFunc("api-url", cobra.NoFileCompletions))
+	must(cmd.RegisterFlagCompletionFunc("timeout", cobra.NoFileCompletions))
+}
+
+func addConnectionFlagCompletions(cmd *cobra.Command) {
+	must(cmd.RegisterFlagCompletionFunc("profile", profileFlagCompletions))
+	must(cmd.RegisterFlagCompletionFunc("url", cobra.NoFileCompletions))
+	must(cmd.RegisterFlagCompletionFunc("api-key", cobra.NoFileCompletions))
+	must(cmd.RegisterFlagCompletionFunc("timeout", cobra.NoFileCompletions))
+}
+
+func addTUIFlagCompletions(cmd *cobra.Command) {
+	must(cmd.RegisterFlagCompletionFunc("interval", cobra.NoFileCompletions))
+	must(cmd.RegisterFlagCompletionFunc("realtime-window", cobra.FixedCompletions([]cobra.Completion{"1m", "5m", "10m"}, cobra.ShellCompDirectiveNoFileComp)))
+	must(cmd.RegisterFlagCompletionFunc("chart-y-axis", cobra.FixedCompletions([]cobra.Completion{"absolute", "relative"}, cobra.ShellCompDirectiveNoFileComp)))
+	must(cmd.RegisterFlagCompletionFunc("mode", cobra.FixedCompletions([]cobra.Completion{"sheet", "line"}, cobra.ShellCompDirectiveNoFileComp)))
+	must(cmd.RegisterFlagCompletionFunc("ascii", cobra.NoFileCompletions))
+	must(cmd.RegisterFlagCompletionFunc("no-color", cobra.NoFileCompletions))
+}
+
+func changedFlagArgs(cmd *cobra.Command) []string {
+	args := []string{}
+	cmd.Flags().Visit(func(flag *pflag.Flag) {
+		if flag.Name == "config" {
+			return
+		}
+		args = append(args, "--"+flag.Name+"="+flag.Value.String())
+	})
+	return args
+}
+
+func setConfigEnvFromCommand(cmd *cobra.Command) error {
+	value, err := cmd.Flags().GetString("config")
+	if err != nil {
+		return err
+	}
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return nil
+	}
+	return os.Setenv("KTUI_CONFIG", value)
+}
+
+func defaultConfigPath() string {
+	path, err := config.Path()
+	if err != nil {
+		return ""
+	}
+	return path
+}
+
+func profileFlagCompletions(cmd *cobra.Command, args []string, toComplete string) ([]cobra.Completion, cobra.ShellCompDirective) {
+	return profileCompletions(cmd, toComplete), cobra.ShellCompDirectiveNoFileComp
+}
+
+func profileNameArgCompletions(cmd *cobra.Command, args []string, toComplete string) ([]cobra.Completion, cobra.ShellCompDirective) {
+	if len(args) > 0 {
+		return nil, cobra.ShellCompDirectiveNoFileComp
+	}
+	return profileCompletions(cmd, toComplete), cobra.ShellCompDirectiveNoFileComp
+}
+
+func profileRenameArgCompletions(cmd *cobra.Command, args []string, toComplete string) ([]cobra.Completion, cobra.ShellCompDirective) {
+	if len(args) == 0 {
+		return profileCompletions(cmd, toComplete), cobra.ShellCompDirectiveNoFileComp
+	}
+	if len(args) == 1 {
+		return profileCompletionsExcept(cmd, toComplete, args[0]), cobra.ShellCompDirectiveNoFileComp
+	}
+	return nil, cobra.ShellCompDirectiveNoFileComp
+}
+
+func configSetCompletions(cmd *cobra.Command, args []string, toComplete string) ([]cobra.Completion, cobra.ShellCompDirective) {
+	if len(args) == 0 {
+		return filterCompletions(cobraConfigKeys, toComplete), cobra.ShellCompDirectiveNoFileComp
+	}
+	if len(args) == 1 {
+		return filterCompletions(configValueCompletionsForCobra(cmd, args[0]), toComplete), cobra.ShellCompDirectiveNoFileComp
+	}
+	return nil, cobra.ShellCompDirectiveNoFileComp
+}
+
+func configValueCompletionsForCobra(cmd *cobra.Command, key string) []string {
+	switch strings.TrimSpace(strings.ToLower(key)) {
+	case "profile":
+		return completionProfileNamesForCommand(cmd)
+	case "mode":
+		return []string{"sheet", "line"}
+	case "realtime-window", "realtime_window":
+		return []string{"1m", "5m", "10m"}
+	case "chart-y-axis", "chart_y_axis":
+		return []string{"absolute", "relative"}
+	case "ascii", "no-color", "no_color":
+		return []string{"true", "false"}
+	default:
+		return nil
+	}
+}
+
+func profileCompletions(cmd *cobra.Command, toComplete string) []cobra.Completion {
+	return filterCompletions(completionProfileNamesForCommand(cmd), toComplete)
+}
+
+func profileCompletionsExcept(cmd *cobra.Command, toComplete string, exclude string) []cobra.Completion {
+	names := completionProfileNamesForCommand(cmd)
+	out := make([]string, 0, len(names))
+	for _, name := range names {
+		if name != exclude {
+			out = append(out, name)
+		}
+	}
+	return filterCompletions(out, toComplete)
+}
+
+func completionProfileNamesForCommand(cmd *cobra.Command) []string {
+	cfg, err := loadCompletionConfig(cmd)
+	if err != nil {
+		return []string{config.DefaultProfile}
+	}
+	return cfg.ProfileNames()
+}
+
+func loadCompletionConfig(cmd *cobra.Command) (config.Config, error) {
+	path, _ := cmd.Flags().GetString("config")
+	path = strings.TrimSpace(path)
+	if path == "" {
+		cfg, _, err := config.Load()
+		return cfg, err
+	}
+	old, hadOld := os.LookupEnv("KTUI_CONFIG")
+	if err := os.Setenv("KTUI_CONFIG", path); err != nil {
+		return config.Config{}, err
+	}
+	defer func() {
+		if hadOld {
+			_ = os.Setenv("KTUI_CONFIG", old)
+		} else {
+			_ = os.Unsetenv("KTUI_CONFIG")
+		}
+	}()
+	cfg, _, err := config.Load()
+	return cfg, err
+}
+
+func filterCompletions(values []string, prefix string) []cobra.Completion {
+	out := make([]cobra.Completion, 0, len(values))
+	for _, value := range values {
+		if strings.HasPrefix(value, prefix) {
+			out = append(out, value)
+		}
+	}
+	return out
+}
+
+func must(err error) {
+	if err != nil {
+		panic(err)
+	}
+}
diff --git a/cmd/ktui/cobra_test.go b/cmd/ktui/cobra_test.go
new file mode 100644
index 0000000..9823071
--- /dev/null
+++ b/cmd/ktui/cobra_test.go
@@ -0,0 +1,101 @@
+package main
+
+import (
+	"bytes"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"ktui/internal/config"
+)
+
+func TestCobraRootCommandTree(t *testing.T) {
+	root := newRootCommand()
+	for _, name := range []string{"status", "export", "config", "profile", "update", "version", "keys", "completion"} {
+		cmd, _, err := root.Find([]string{name})
+		if err != nil {
+			t.Fatalf("find %q error = %v", name, err)
+		}
+		if cmd == nil || cmd.Name() != name {
+			t.Fatalf("find %q = %v", name, cmd)
+		}
+	}
+}
+
+func TestCobraChangedFlagArgsSkipsConfig(t *testing.T) {
+	root := newRootCommand()
+	if err := root.ParseFlags([]string{"--mode", "line", "--config", "custom.json", "--ascii"}); err != nil {
+		t.Fatal(err)
+	}
+	args := changedFlagArgs(root)
+	if !hasString(args, "--mode=line") || !hasString(args, "--ascii=true") {
+		t.Fatalf("changedFlagArgs = %#v, want changed root flags", args)
+	}
+	for _, arg := range args {
+		if strings.HasPrefix(arg, "--config=") {
+			t.Fatalf("changedFlagArgs should skip config: %#v", args)
+		}
+	}
+}
+
+func TestCobraCompletionUsesConfiguredProfiles(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "config.json")
+
+	cfg, err := config.AddProfile(config.Default(), "prod", "https://prod.example.com", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Setenv("KTUI_CONFIG", path)
+	if _, err := config.Save(cfg); err != nil {
+		t.Fatal(err)
+	}
+
+	root := newRootCommand()
+	status, _, err := root.Find([]string{"status"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := status.ParseFlags([]string{"--config", path}); err != nil {
+		t.Fatal(err)
+	}
+	got := profileCompletions(status, "pr")
+	if !hasCompletion(got, "prod") {
+		t.Fatalf("profile completions = %#v, want prod", got)
+	}
+}
+
+func TestCobraHiddenCompletionCommand(t *testing.T) {
+	root := newRootCommand()
+	var out bytes.Buffer
+	root.SetOut(&out)
+	root.SetErr(&out)
+	root.SetArgs([]string{"__complete", "completion", ""})
+
+	if err := root.Execute(); err != nil {
+		t.Fatal(err)
+	}
+	text := out.String()
+	for _, want := range []string{"bash", "zsh", "fish", "powershell"} {
+		if !strings.Contains(text, want) {
+			t.Fatalf("hidden completion output missing %q:\n%s", want, text)
+		}
+	}
+}
+
+func hasString(values []string, want string) bool {
+	for _, value := range values {
+		if value == want {
+			return true
+		}
+	}
+	return false
+}
+
+func hasCompletion(values []string, want string) bool {
+	for _, value := range values {
+		if value == want {
+			return true
+		}
+	}
+	return false
+}
diff --git a/cmd/ktui/main.go b/cmd/ktui/main.go
index b237d9f..ce41827 100644
--- a/cmd/ktui/main.go
+++ b/cmd/ktui/main.go
@@ -30,13 +30,7 @@ const (
 )
 
 func main() {
-	args, configPath := splitConfigArg(os.Args[1:])
-	if configPath != "" {
-		if err := os.Setenv("KTUI_CONFIG", configPath); err != nil {
-			fatal(err)
-		}
-	}
-	if err := handleCommand(args); err != nil {
+	if err := execute(); err != nil {
 		fatal(err)
 	}
 }
@@ -802,7 +796,7 @@ func handleProfile(args []string) error {
 
 func handleHelp(args []string) error {
 	if len(args) > 1 {
-		return fmt.Errorf("usage: ktui help [status|config|profile|keys|update|export]")
+		return fmt.Errorf("usage: ktui help [status|config|profile|keys|update|export|completion]")
 	}
 	if len(args) == 0 {
 		printHelp()
@@ -880,8 +874,9 @@ Usage:
   ktui config <init|path|show|set|help>
   ktui profile <list|current|use|add|rename|remove>
   ktui update <check|install>
+  ktui completion <bash|zsh|fish|powershell>
   ktui version
-  ktui help [status|config|profile|keys|update|export]
+  ktui help [status|config|profile|keys|update|export|completion]
 
 Connection flags:
   --profile NAME    profile name
@@ -908,6 +903,7 @@ Examples:
   ktui version
   ktui update check
   ktui update install
+  ktui completion bash
   ktui export markdown
   ktui export csv --output nodes.csv
   ktui config init
diff --git a/cmd/ktui/main_test.go b/cmd/ktui/main_test.go
index 8017b61..0d6e95a 100644
--- a/cmd/ktui/main_test.go
+++ b/cmd/ktui/main_test.go
@@ -62,11 +62,13 @@ func TestHelpTextUsesRefactoredCommands(t *testing.T) {
 		"ktui export <markdown|csv|json> [flags]",
 		"ktui profile <list|current|use|add|rename|remove>",
 		"ktui update <check|install>",
+		"ktui completion <bash|zsh|fish|powershell>",
 		"--profile NAME",
 		"--mode MODE",
 		"--realtime-window DURATION",
 		"ktui update check",
 		"ktui update install",
+		"ktui completion bash",
 	} {
 		if !strings.Contains(helpText, want) {
 			t.Fatalf("help text missing %q:\n%s", want, helpText)
diff --git a/go.mod b/go.mod
index aff62ed..483d279 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,10 @@
 module ktui
 
 go 1.26
+
+require (
+	github.com/spf13/cobra v1.10.2
+	github.com/spf13/pflag v1.0.9
+)
+
+require github.com/inconshreveable/mousetrap v1.1.0 // indirect
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..a6ee3e0
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,10 @@
+github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/spf13/cobra v1.10.2 h1:DMTTonx5m65Ic0GOoRY2c16WCbHxOOw6xxezuLaBpcU=
+github.com/spf13/cobra v1.10.2/go.mod h1:7C1pvHqHw5A4vrJfjNwvOdzYu0Gml16OCs2GRiTUUS4=
+github.com/spf13/pflag v1.0.9 h1:9exaQaMOCwffKiiiYk6/BndUBv+iRViNW+4lEMi0PvY=
+github.com/spf13/pflag v1.0.9/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=