Add root command to open depository with $EDITOR

- Implement openDepository function in cmd/root.go to open the depository directory in $EDITOR
- Falls back to vi if $EDITOR is not set
- Update README.md with new usage section documenting bare 'jade' command
- Include config.go changes that move config location to depository/.jade/

jade-depo/cmd/root.go

@@ -3,6 +3,7 @@ package cmd
 import (
 	"fmt"
 	"os"
+	"os/exec"
 
 	"git.jnss.me/joakim/jadedepo/internal/engine"
 	"github.com/spf13/cobra"
@@ -11,6 +12,7 @@ import (
 var (
 	rootCmd = &cobra.Command{
 		Short: "Jade CLI is a note-manager and orchestrator.",
+		Run:   openDepository,
 	}
 )
 
@@ -27,11 +29,36 @@ func init() {
 		}
 	})
 
-	rootCmd.PersistentFlags().StringVar(&cfgPath, "config", "", "Configuration path. Default $HOME/.config/jade")
+	rootCmd.PersistentFlags().StringVar(&cfgPath, "config", "", "Configuration file path. Default <depo>/.jade/config.yml")
 	rootCmd.PersistentFlags().StringVar(&depoPath, "depo", "", "Depository path. Default $HOME/jade-depository")
 
 }
 
+func openDepository(cmd *cobra.Command, args []string) {
+	jd, err := engine.GetInstance()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Get editor from environment variable, fallback to vi
+	editor := os.Getenv("EDITOR")
+	if editor == "" {
+		editor = "vi"
+	}
+
+	// Open the depository directory with the editor
+	editorCmd := exec.Command(editor, jd.Config.DepoPath)
+	editorCmd.Stdin = os.Stdin
+	editorCmd.Stdout = os.Stdout
+	editorCmd.Stderr = os.Stderr
+
+	if err := editorCmd.Run(); err != nil {
+		fmt.Fprintf(os.Stderr, "Error opening depository: %v\n", err)
+		os.Exit(1)
+	}
+}
+
 func Execute() {
 	if err := rootCmd.Execute(); err != nil {
 		fmt.Println(err)