Suppression item Attribut : redondant avec le DataModel personnage

- DataModel CelestopolAttribute supprimé (items.mjs)
- CelestopolAttributeSheet supprimée (item-sheets.mjs)
- Imports/registrations retirés (fvtt-celestopol.mjs)
- Section 'Attributs' supprimée de character-competences.hbs
- Action createAttribute + contexte attributes retirés (character-sheet.mjs)
- Template attribute.hbs supprimé
- Clés i18n attribute/attributes/newAttribute supprimées (fr.json)
- Type 'attribute' retiré des htmlFields (system.json)
- htmlFields anomaly corrigés : technique/narratif/exemples

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

module/applications/sheets/character-sheet.mjs

@@ -10,7 +10,6 @@ export default class CelestopolCharacterSheet extends CelestopolActorSheet {
     actions: {
       createAnomaly:    CelestopolCharacterSheet.#onCreateAnomaly,
       createAspect:     CelestopolCharacterSheet.#onCreateAspect,
-      createAttribute:  CelestopolCharacterSheet.#onCreateAttribute,
       createEquipment:  CelestopolCharacterSheet.#onCreateEquipment,
       useAnomaly:       CelestopolCharacterSheet.#onUseAnomaly,
       resetAnomalyUses: CelestopolCharacterSheet.#onResetAnomalyUses,
@@ -68,7 +67,6 @@ export default class CelestopolCharacterSheet extends CelestopolActorSheet {
         context.tab = context.tabs.competences
         context.anomaly    = doc.itemTypes.anomaly[0] ?? null
         context.aspects    = doc.itemTypes.aspect
-        context.attributes = doc.itemTypes.attribute
         if (context.anomaly) {
           const def = SYSTEM.ANOMALY_DEFINITIONS[context.anomaly.system.subtype] ?? SYSTEM.ANOMALY_DEFINITIONS.none
           context.anomalySkillLabels = def.technicalSkills.map(key => {
@@ -120,12 +118,6 @@ export default class CelestopolCharacterSheet extends CelestopolActorSheet {
     }])
   }
 
-  static #onCreateAttribute() {
-    this.document.createEmbeddedDocuments("Item", [{
-      name: game.i18n.localize("CELESTOPOL.Item.newAttribute"), type: "attribute",
-    }])
-  }
-
   static #onCreateEquipment() {
     this.document.createEmbeddedDocuments("Item", [{
       name: game.i18n.localize("CELESTOPOL.Item.newEquipment"), type: "equipment",