update naming and directory structure

src/main.mjs

@@ -1,5 +1,6 @@
 import {PlayerCharacterDataModel} from "./module/character/character.mjs";
 import {DsaActor} from "./module/Actors/dsa-actor.mjs";
+import {Skill} from "./module/Items/Skill.mjs"
 
 Hooks.once("init", () => {
     // Configure custom Document implementations.
@@ -10,5 +11,9 @@ Hooks.once("init", () => {
         character: PlayerCharacterDataModel,
     };
 
+    CONFIG.Item.dataModels = {
+        skills: Skill
+    }
+
     console.log("DSA 4.1 is ready for development!")
 })

src/module/Items/Skill.mjs

@@ -4,15 +4,18 @@ export default class Skill extends foundry.abstract.TypeDataModel {
 
     static defineSchema() {
         return {
-            name: StringField({required: true}),
+            name: StringField({ required: true }),
-            category: StringField({required: true}),
+            category: StringField({ required: true }),
             attributeReference1: StringField(), // References one of the eight attributes by name
             attributeReference2: StringField(), // References one of the eight attributes by name
             attributeReference3: StringField(), // References one of the eight attributes by name
-            skillValue: NumberField(), // TaW
             handicapValue: NumberField(), // BE-X
             complexity: NumberField(), // In case of languages
+            derivedAttribute1: NumberField(),
+            derivedAttribute2: NumberField(),
+            derivedAttribute3: NumberField(),
+            derivedSkillValue: NumberField(), // TaW
+            
         }
     }
-
 }

src/module/Items/SkillSheet.mjs

@@ -1,4 +1,4 @@
-export class SkillItemSheet extends ItemSheet {
+export class SkillSheet extends ItemSheet {
     /**@override */
     static get defaultOptions() {
         return foundry.utils.mergeObject(super.defaultOptions, {