fix: add better comment

Author: archandatta

cmd/extensions.go

@@ -3,6 +3,7 @@ package cmd
 import (
 	"bytes"
 	"context"
+	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
@@ -76,7 +77,12 @@ func (e ExtensionsCmd) List(ctx context.Context, in ExtensionsListInput) error {
 			fmt.Println("[]")
 			return nil
 		}
-		return util.PrintPrettyJSONSlice(*items)
+		bs, err := json.MarshalIndent(*items, "", "  ")
+		if err != nil {
+			return err
+		}
+		fmt.Println(string(bs))
+		return nil
 	}
 
 	if items == nil || len(*items) == 0 {
@@ -320,7 +326,12 @@ func (e ExtensionsCmd) Upload(ctx context.Context, in ExtensionsUploadInput) err
 	}
 
 	if in.Output == "json" {
-		return util.PrintPrettyJSON(item)
+		bs, err := json.MarshalIndent(item, "", "  ")
+		if err != nil {
+			return err
+		}
+		fmt.Println(string(bs))
+		return nil
 	}
 
 	name := item.Name
@@ -479,5 +490,5 @@ func init() {
 	extensionsBuildWebBotAuthCmd.Flags().String("url", "http://127.0.0.1:10001", "Base URL for update.xml and policy templates")
 	extensionsBuildWebBotAuthCmd.Flags().String("key", "", "Path to Ed25519 private key file (JWK or PEM format)")
 	extensionsBuildWebBotAuthCmd.Flags().String("upload", "", "Upload extension to Kernel with specified name (e.g., --upload web-bot-auth)")
-	extensionsBuildWebBotAuthCmd.Flags().String("signature-agent", "", "URL of the signature agent")
+	extensionsBuildWebBotAuthCmd.Flags().String("signature-agent", "", "Base URL of the signature agent (e.g., https://agent.example.com). Verifiers will look up /.well-known/http-message-signatures-directory at this URL.")
 }