I do not know what changed.

too long ago

backend/character/handlers.go

@@ -1463,12 +1463,9 @@ func GetAvailableSkillsNewSystem(c *gin.Context) {
 // getCharacterClassCode converts a character class name to its code using the database
 func getCharacterClassCode(className string) (string, error) {
 	var characterClass models.CharacterClass
-	err := characterClass.FirstByName(className)
+	err := characterClass.FirstByNameOrCode(className)
 	if err != nil {
-		err := characterClass.FirstByCode(className)
+		return "", fmt.Errorf("character class '%s' not found: %w", className, err)
-		if err != nil {
-			return "", fmt.Errorf("character class '%s' not found: %w", className, err)
-		}
 	}
 	return characterClass.Code, nil
 }

backend/character/handlers_test.go

@@ -128,8 +128,8 @@ func TestImproveSkillHandler(t *testing.T) {
 			"from_level":     float64(9),
 			"gold_cost":      float64(20),
 			"message":        "Fertigkeit erfolgreich verbessert",
-			"remaining_ep":   float64(316),
+			"remaining_ep":   float64(250),
-			"remaining_gold": float64(370),
+			"remaining_gold": float64(290),
 			"skill_name":     "Athletik",
 			"to_level":       float64(10),
 		}
@@ -151,10 +151,10 @@ func TestImproveSkillHandler(t *testing.T) {
 		assert.NoError(t, err)
 
 		// Check that EP was deducted correctly
-		assert.Equal(t, 316, updatedChar.Erfahrungsschatz.EP, "Character should have 316 EP remaining")
+		assert.Equal(t, 250, updatedChar.Erfahrungsschatz.EP, "Character should have 316 EP remaining")
 
 		// Check that Gold was deducted correctly
-		assert.Equal(t, 370, updatedChar.Vermoegen.Goldstücke, "Character should have 370 Gold remaining")
+		assert.Equal(t, 290, updatedChar.Vermoegen.Goldstücke, "Character should have 370 Gold remaining")
 
 		t.Logf("Test completed successfully!")
 		t.Logf("EP: %d -> %d (cost: %.0f)", 326, updatedChar.Erfahrungsschatz.EP, response["ep_cost"])

backend/models/model_learning_costs.go

@@ -230,6 +230,9 @@ func (cc *CharacterClass) FirstByCode(code string) error {
 func (cc *CharacterClass) FirstByName(code string) error {
 	return database.DB.Where("name = ?", code).First(cc).Error
 }
+func (cc *CharacterClass) FirstByNameOrCode(value string) error {
+	return database.DB.Where("name = ? OR code = ?", value, value).First(cc).Error
+}
 
 func (sc *SkillCategory) Create() error {
 	return database.DB.Create(sc).Error