feat(custom-fields) : invalide le cache de suggestions apres save

Apres chaque save reussi de champs perso (machine via
useMachineCustomFieldDefs, ModelType via useEntityTypes), on invalide
le cache useCustomFieldNameSuggestions pour que les noms nouvellement
crees apparaissent dans les futures autocomplete.

Note : le plan mentionnait ModelTypeForm.vue, mais le save reel se
fait dans useEntityTypes (le composant ne fait qu'emit 'submit').

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/app/composables/useEntityTypes.ts

@@ -7,6 +7,7 @@
 
 import { ref, type Ref } from 'vue'
 import { useToast } from './useToast'
+import { useCustomFieldNameSuggestions } from './useCustomFieldNameSuggestions'
 import { humanizeError } from '~/shared/utils/errorMessages'
 import {
   listModelTypes,
@@ -79,6 +80,7 @@ export function invalidateEntityTypeCache(category: ModelCategory) {
 export function useEntityTypes(config: EntityTypeConfig) {
   const { category, label } = config
   const { showSuccess, showError } = useToast()
+  const { invalidate: invalidateCustomFieldNames } = useCustomFieldNameSuggestions()
   const state = getOrCreateState(category)
 
   const normalizeItem = (item: ModelType): EntityType => ({
@@ -124,6 +126,7 @@ export function useEntityTypes(config: EntityTypeConfig) {
       })
       const normalized = normalizeItem(data)
       state.types.value.push(normalized)
+      invalidateCustomFieldNames()
       showSuccess(`Type de ${label} "${data.name}" créé`)
       return { success: true, data: normalized }
     } catch (error) {
@@ -150,6 +153,7 @@ export function useEntityTypes(config: EntityTypeConfig) {
       const normalized = normalizeItem(data)
       const index = state.types.value.findIndex((t) => t.id === id)
       if (index !== -1) state.types.value[index] = normalized
+      invalidateCustomFieldNames()
       showSuccess(`Type de ${label} "${data.name}" mis à jour`)
       return { success: true, data: normalized }
     } catch (error) {

frontend/app/composables/useMachineCustomFieldDefs.ts

@@ -1,5 +1,6 @@
 import { reactive, ref } from 'vue'
 import { useApi } from '~/composables/useApi'
+import { useCustomFieldNameSuggestions } from '~/composables/useCustomFieldNameSuggestions'
 import { useToast } from '~/composables/useToast'
 
 // --- Types ---
@@ -88,6 +89,7 @@ const parseOptions = (optionsText: string): string[] =>
 export function useMachineCustomFieldDefs(deps: Deps) {
   const { apiCall } = useApi()
   const { showSuccess, showError } = useToast()
+  const { invalidate: invalidateCustomFieldNames } = useCustomFieldNameSuggestions()
 
   // --- State ---
 
@@ -294,6 +296,7 @@ export function useMachineCustomFieldDefs(deps: Deps) {
       }
 
       showSuccess('Champs personnalisés sauvegardés avec succès')
+      invalidateCustomFieldNames()
       await deps.onSaved()
     } catch {
       showError('Erreur inattendue lors de la sauvegarde des champs personnalisés')