refactor(cmd): improve testability and error handling in CLI commands

cmd/root.go

@@ -12,10 +12,12 @@ var (
 	buildTime = "unknown"
 )
 
-var rootCmd = &cobra.Command{
-	Use:   "lnk",
-	Short: "🔗 Dotfiles, linked. No fluff.",
-	Long: `🔗 Lnk - Git-native dotfiles management that doesn't suck.
+// NewRootCommand creates a new root command (testable)
+func NewRootCommand() *cobra.Command {
+	rootCmd := &cobra.Command{
+		Use:   "lnk",
+		Short: "🔗 Dotfiles, linked. No fluff.",
+		Long: `🔗 Lnk - Git-native dotfiles management that doesn't suck.
 
 Move your dotfiles to ~/.config/lnk, symlink them back, and use Git like normal.
 That's it.
@@ -28,17 +30,29 @@ That's it.
   lnk pull                    # Get latest changes
 
 🎯 Simple, fast, and Git-native.`,
-	SilenceUsage: true,
+		SilenceUsage: true,
+		Version:      fmt.Sprintf("%s (built %s)", version, buildTime),
+	}
+
+	// Add subcommands
+	rootCmd.AddCommand(newInitCmd())
+	rootCmd.AddCommand(newAddCmd())
+	rootCmd.AddCommand(newRemoveCmd())
+	rootCmd.AddCommand(newStatusCmd())
+	rootCmd.AddCommand(newPushCmd())
+	rootCmd.AddCommand(newPullCmd())
+
+	return rootCmd
 }
 
 // SetVersion sets the version information for the CLI
 func SetVersion(v, bt string) {
 	version = v
 	buildTime = bt
-	rootCmd.Version = fmt.Sprintf("%s (built %s)", version, buildTime)
 }
 
 func Execute() {
+	rootCmd := NewRootCommand()
 	if err := rootCmd.Execute(); err != nil {
 		fmt.Fprintln(os.Stderr, err)
 		os.Exit(1)