refactor: fix redundant metadata fields across the codebase - Removed VaultMetadata.Name (redundant with directory structure) - Removed SecretMetadata.Name (redundant with Secret.Name field) - Removed AgePublicKey and AgeRecipient from PGPUnlockerMetadata - Removed AgePublicKey from KeychainUnlockerMetadata - Changed PGP and Keychain unlockers to store recipient in pub.txt instead of pub.age - Fixed all tests to reflect these changes - Follows DRY principle and prevents data inconsistency

internal/secret/secret.go

@@ -55,7 +55,6 @@ func NewSecret(vault VaultInterface, name string) *Secret {
 		Directory: secretDir,
 		vault:     vault,
 		Metadata: SecretMetadata{
-			Name:      name,
 			CreatedAt: time.Now(),
 			UpdatedAt: time.Now(),
 		},
@@ -218,7 +217,6 @@ func (s *Secret) LoadMetadata() error {
 	// For backward compatibility, we'll populate with basic info
 	now := time.Now()
 	s.Metadata = SecretMetadata{
-		Name:      s.Name,
 		CreatedAt: now,
 		UpdatedAt: now,
 	}