feat: add API optimizations, cache invalidation and comprehensive test suite

- Add abort controllers and request deduplication to composables
- Add entity type cache invalidation on create/update/delete flows
- Add 179 new tests (utilities, services, composables, components)
- Fix Vue runtime warnings in structure editors

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/pages/component-category/new.vue

@@ -32,6 +32,7 @@ import { ref } from 'vue'
 import { useHead, useRouter } from '#imports'
 import ModelTypeForm from '~/components/model-types/ModelTypeForm.vue'
 import { createModelType } from '~/services/modelTypes'
+import { invalidateEntityTypeCache } from '~/composables/useEntityTypes'
 import { useToast } from '~/composables/useToast'
 
 useHead(() => ({
@@ -56,6 +57,7 @@ const handleSubmit = async (payload: Parameters<typeof createModelType>[0]) => {
       description: payload.notes ?? null,
     }
     await createModelType(enrichedPayload)
+    invalidateEntityTypeCache('COMPONENT')
     showSuccess('Catégorie de composant créée avec succès.')
     await router.push('/component-category')
   } catch (error: any) {