refactor: fix code smells

backend/internal/utils/aaguid_util_test.go

@@ -47,16 +47,14 @@ func TestFormatAAGUID(t *testing.T) {
 func TestGetAuthenticatorName(t *testing.T) {
 	// Reset the aaguidMap for testing
 	originalMap := aaguidMap
-	originalOnce := aaguidMapOnce
 	defer func() {
 		aaguidMap = originalMap
-		aaguidMapOnce = originalOnce
 	}()
 
 	// Inject a test AAGUID map
 	aaguidMap = map[string]string{
-		"adce0002-35bc-c60a-648b-0b25f1f05503": "Test Authenticator",
-		"00000000-0000-0000-0000-000000000000": "Zero Authenticator",
+		"adce0002-35bc-c60a-648b-m0b25f1f05503": "Test Authenticator",
+		"00000000-0000-0000-0000-000000000000":  "Zero Authenticator",
 	}
 	aaguidMapOnce = sync.Once{}
 	aaguidMapOnce.Do(func() {}) // Mark as done to avoid loading from file

backend/internal/utils/image/profile_picture.go

@@ -32,7 +32,7 @@ func CreateProfilePicture(file io.Reader) (io.Reader, error) {
 	go func() {
 		err = imaging.Encode(pw, img, imaging.PNG)
 		if err != nil {
-			_ = pw.CloseWithError(fmt.Errorf("failed to encode image: %v", err))
+			_ = pw.CloseWithError(fmt.Errorf("failed to encode image: %w", err))
 			return
 		}
 		pw.Close()