Added option to run local (rsync) or cloud (rclone) backups, in case you prefer a "full" copy with hardlinks via rsync, or latest/incremental snapshots via rclone

cmd/root.go

@@ -0,0 +1,66 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+var (
+	cfgFile string
+
+	rootCmd = &cobra.Command{
+		Use:   "goblin-store",
+		Short: "A fast, concurrent backup utility",
+		Long:  `A multi-threaded incremental backup CLI supporting cloud and local targets.`,
+	}
+)
+
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func init() {
+	cobra.OnInitialize(initConfig)
+
+	// Global flags available across all commands
+	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is ~/.config/goblin-store.yaml)")
+	rootCmd.PersistentFlags().BoolP("verbose", "v", false, "enable verbose output")
+
+	_ = viper.BindPFlag("verbose", rootCmd.PersistentFlags().Lookup("verbose"))
+}
+
+func initConfig() {
+	if cfgFile != "" {
+		// Explicit config file passed via --config flag
+		viper.SetConfigFile(cfgFile)
+	} else {
+		// 1. Check OS user config directory (~/.config on Linux)
+		if configDir, err := os.UserConfigDir(); err == nil {
+			viper.AddConfigPath(configDir) // Searches ~/.config/goblin-store.yaml
+		}
+
+		// 2. Check current working directory as fallback
+		viper.AddConfigPath(".")
+
+		// File base name (without extension) and format
+		viper.SetConfigName("goblin-store")
+		viper.SetConfigType("yaml")
+	}
+
+	viper.SetEnvPrefix("GSBACKUP")
+	viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_", ".", "_"))
+	viper.AutomaticEnv()
+
+	if err := viper.ReadInConfig(); err == nil {
+		if viper.GetBool("verbose") {
+			fmt.Printf("Using config file: %s\n", viper.ConfigFileUsed())
+		}
+	}
+}