fix: Don't use PersistentPreRunE. Caused the actuall runRollup function to never run.

.tool-versions

@@ -1 +1 @@
-golang 1.23.0
+golang 1.23.1

cmd/root.go

@@ -27,7 +27,7 @@ var rootCmd = &cobra.Command{
 	Long: `Rollup is a tool that writes the contents of all files (with target custom file types provided)
 in a given project, current path or a custom path, to a single timestamped markdown file
 whose name is <project-directory-name>-rollup-<timestamp>.md.`,
-	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
+	RunE: func(cmd *cobra.Command, args []string) error {
 		// Skip config loading and rollup execution for help command
 		if cmd.Name() == "help" {
 			return nil