Refactor director data processing in FalukantService: Improved handling of null character references and added default values for character properties. This enhances data integrity and prevents potential runtime errors when processing director information.

backend/services/falukantService.js

@@ -2567,25 +2567,25 @@ class FalukantService extends BaseService {
             ],
             attributes: ['id', 'satisfaction', 'income'],
         });
-        return directors.map(director => {
-            // 1) avgKnowledge berechnen
-            const knowledges = director.character.knowledges || [];
+        return directors
+            .filter(director => director.character != null)
+            .map(director => {
+                const char = director.character;
+                const knowledges = char.knowledges || [];
                 const avgKnowledge = knowledges.length
-                ? knowledges.reduce((sum, k) => sum + k.knowledge, 0) / knowledges.length
+                    ? knowledges.reduce((sum, k) => sum + (k.knowledge || 0), 0) / knowledges.length
                     : 0;
-
-            // 2) wishedIncome anhand der JS-Formel
+                const nobleLevel = char.nobleTitle?.level ?? 1;
                 const wishedIncome = Math.round(
-                director.character.nobleTitle.level * Math.pow(1.231, avgKnowledge / 1.5)
+                    nobleLevel * Math.pow(1.231, avgKnowledge / 1.5)
                 );
-
                 return {
                     id: director.id,
                     satisfaction: director.satisfaction,
-                character: director.character,
-                age: calcAge(director.character.birthdate),
+                    character: char,
+                    age: calcAge(char.birthdate),
                     income: director.income,
-                region: director.character.region.name,
+                    region: char.region?.name ?? '',
                     wishedIncome,
                 };
             });