Fix 'secret get' to output to stdout instead of stderr

- Add Print method to CLI Instance that uses cmd.OutOrStdout()
- Update GetSecretWithVersion to use cli.Print instead of cmd.Print
- Add test to verify secret values go to stdout, not stderr
- Store command reference in Instance for proper output handling

internal/cli/secrets.go

@@ -278,6 +278,9 @@ func (cli *Instance) GetSecret(cmd *cobra.Command, secretName string) error {
 func (cli *Instance) GetSecretWithVersion(cmd *cobra.Command, secretName string, version string) error {
 	secret.Debug("GetSecretWithVersion called", "secretName", secretName, "version", version)
 
+	// Store the command for output
+	cli.cmd = cmd
+
 	// Get current vault
 	vlt, err := vault.GetCurrentVault(cli.fs, cli.stateDir)
 	if err != nil {
@@ -302,8 +305,8 @@ func (cli *Instance) GetSecretWithVersion(cmd *cobra.Command, secretName string,
 	secret.Debug("Got secret value", "valueLength", len(value))
 
 	// Print the secret value to stdout
-	cmd.Print(string(value))
-	secret.Debug("Printed value to cmd")
+	_, _ = cli.Print(string(value))
+	secret.Debug("Printed value to stdout")
 
 	// Debug: Log what we're actually printing
 	secret.Debug("Secret retrieval debug info",