passes tests now!

internal/vault/metadata_test.go

@@ -71,8 +71,9 @@ func TestVaultMetadata(t *testing.T) {
 		}
 
 		metadata1 := &VaultMetadata{
-			DerivationIndex: 0,
-			PublicKeyHash:   pubKeyHash0,
+			DerivationIndex:    0,
+			PublicKeyHash:      pubKeyHash0, // Hash of the actual key (index 0)
+			MnemonicFamilyHash: pubKeyHash0, // Hash of index 0 key (for family identification)
 		}
 		if err := SaveVaultMetadata(fs, vaultDir, metadata1); err != nil {
 			t.Fatalf("Failed to save metadata: %v", err)
@@ -115,9 +116,13 @@ func TestVaultMetadata(t *testing.T) {
 			t.Fatalf("Failed to write public key: %v", err)
 		}
 
+		// Compute the hash for index 5 key
+		pubKeyHash5 := ComputeDoubleSHA256([]byte(pubKey5))
+
 		metadata2 := &VaultMetadata{
-			DerivationIndex: 5,
-			PublicKeyHash:   pubKeyHash0, // Same hash since it's from the same mnemonic
+			DerivationIndex:    5,
+			PublicKeyHash:      pubKeyHash5, // Hash of the actual key (index 5)
+			MnemonicFamilyHash: pubKeyHash0, // Same family hash since it's from the same mnemonic
 		}
 		if err := SaveVaultMetadata(fs, vaultDir2, metadata2); err != nil {
 			t.Fatalf("Failed to save metadata: %v", err)