refactor(frontend) : extract shared components and reduce file sizes

- Extract CustomFieldInputGrid.vue from 6 duplicated template blocks (~70 lines each)
- Extract EntityHistorySection.vue from 3 identical history sections in edit pages
- Extract useDragReorder composable from 4 identical drag-and-drop implementations in StructureNodeEditor (~330 lines → ~30)
- Extract catalogDisplayUtils.ts (resolvePrimaryDocument, resolveSupplierNames, buildSuppliersDisplay)
- Remove redundant computed wrappers (historyEntries, loadingTypes, selectedFiles)
- Remove unused imports (fieldKey, historyActionLabel, formatHistoryDate, *HistoryEntry types)
- Move Intl.DateTimeFormat to module-level in date.ts

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

app/pages/component/[id]/edit.vue

@@ -275,78 +275,7 @@
               Mettez à jour les valeurs propres à ce composant.
             </p>
           </header>
-          <div class="grid grid-cols-1 gap-4 md:grid-cols-2">
-            <div
-              v-for="(field, index) in customFieldInputs"
-              :key="fieldKey(field, index)"
-              class="form-control"
-            >
-              <label class="label">
-                <span class="label-text">{{ field.name }}</span>
-                <span v-if="field.required" class="label-text-alt text-error">*</span>
-              </label>
-              <input
-                v-if="field.type === 'text'"
-                v-model="field.value"
-                type="text"
-                class="input input-bordered input-sm md:input-md"
-                :required="field.required"
-                :disabled="!canEdit || saving"
-              >
-              <input
-                v-else-if="field.type === 'number'"
-                v-model="field.value"
-                type="number"
-                step="0.01"
-                class="input input-bordered input-sm md:input-md"
-                :required="field.required"
-                :disabled="!canEdit || saving"
-              >
-              <select
-                v-else-if="field.type === 'select'"
-                v-model="field.value"
-                class="select select-bordered select-sm md:select-md"
-                :required="field.required"
-                :disabled="!canEdit || saving"
-              >
-                <option value="">Sélectionner...</option>
-                <option
-                  v-for="option in field.options"
-                  :key="option"
-                  :value="option"
-                >
-                  {{ option }}
-                </option>
-              </select>
-              <label v-else-if="field.type === 'boolean'" class="flex items-center gap-3 cursor-pointer">
-                <input
-                  v-model="field.value"
-                  type="checkbox"
-                  class="toggle toggle-primary toggle-sm md:toggle-md"
-                  true-value="true"
-                  false-value="false"
-                  :disabled="!canEdit || saving"
-                >
-                <span class="text-sm" :class="field.value === 'true' ? 'text-success font-medium' : 'text-base-content/60'">{{ field.value === 'true' ? 'Oui' : 'Non' }}</span>
-              </label>
-              <input
-                v-else-if="field.type === 'date'"
-                v-model="field.value"
-                type="date"
-                class="input input-bordered input-sm md:input-md"
-                :required="field.required"
-                :disabled="!canEdit || saving"
-              >
-              <input
-                v-else
-                v-model="field.value"
-                type="text"
-                class="input input-bordered input-sm md:input-md"
-                :required="field.required"
-                :disabled="!canEdit || saving"
-              >
-            </div>
-          </div>
+          <CustomFieldInputGrid :fields="customFieldInputs" :disabled="!canEdit || saving" />
         </div>
 
         <div class="space-y-4 rounded-lg border border-base-200 bg-base-200/40 p-4">
@@ -449,73 +378,12 @@
           </p>
         </div>
 
-        <section class="space-y-3 rounded-lg border border-base-200 bg-base-200/40 p-4">
-          <header class="flex items-center justify-between gap-3">
-            <div>
-              <h2 class="font-semibold text-base-content">Historique</h2>
-              <p class="text-xs text-base-content/70">
-                Qui a changé quoi, et quand.
-              </p>
-            </div>
-            <span v-if="historyEntries.length" class="badge badge-outline">
-              {{ historyEntries.length }} entrée{{ historyEntries.length > 1 ? 's' : '' }}
-            </span>
-          </header>
-
-          <div v-if="historyLoading" class="flex items-center gap-2 text-sm text-base-content/70">
-            <span class="loading loading-spinner loading-sm" aria-hidden="true" />
-            Chargement de l’historique…
-          </div>
-
-          <div v-else-if="historyError" class="alert alert-warning">
-            <span>{{ historyError }}</span>
-          </div>
-
-          <p v-else-if="historyEntries.length === 0" class="text-xs text-base-content/70">
-            Aucun changement enregistré pour le moment.
-          </p>
-
-          <ul v-else class="max-h-80 space-y-2 overflow-y-auto pr-1">
-            <li
-              v-for="entry in historyEntries"
-              :key="entry.id"
-              class="rounded-md border border-base-200 bg-base-100 px-3 py-2"
-            >
-              <div class="flex flex-wrap items-center justify-between gap-2 text-xs text-base-content/70">
-                <span class="font-medium text-base-content">
-                  {{ historyActionLabel(entry.action) }}
-                </span>
-                <span>{{ formatHistoryDate(entry.createdAt) }}</span>
-              </div>
-              <p class="mt-1 text-xs text-base-content/60">
-                Par {{ entry.actor?.label || 'Inconnu' }}
-              </p>
-
-              <ul
-                v-if="historyDiffEntries(entry).length"
-                class="mt-2 space-y-1 text-xs"
-              >
-                <li
-                  v-for="diffEntry in historyDiffEntries(entry)"
-                  :key="`${entry.id}-${diffEntry.field}`"
-                  class="flex flex-col gap-0.5"
-                >
-                  <span class="font-medium text-base-content/80">{{ diffEntry.label }}</span>
-                  <span class="text-base-content/60">
-                    {{ diffEntry.fromLabel }} → {{ diffEntry.toLabel }}
-                  </span>
-                </li>
-              </ul>
-
-              <p
-                v-else-if="entry.snapshot?.name"
-                class="mt-2 text-xs text-base-content/70"
-              >
-                {{ entry.snapshot.name }}
-              </p>
-            </li>
-          </ul>
-        </section>
+        <EntityHistorySection
+          :entries="history"
+          :loading="historyLoading"
+          :error="historyError"
+          :field-labels="historyFieldLabels"
+        />
 
         <div class="flex flex-col gap-3 md:flex-row md:justify-end">
           <NuxtLink to="/component-catalog" class="btn btn-ghost" :class="{ 'btn-disabled': saving }">
@@ -559,7 +427,7 @@ import { useToast } from '~/composables/useToast'
 import { extractRelationId } from '~/shared/apiRelations'
 import { useDocuments } from '~/composables/useDocuments'
 import { useConstructeurs } from '~/composables/useConstructeurs'
-import { useComponentHistory, type ComponentHistoryEntry } from '~/composables/useComponentHistory'
+import { useComponentHistory } from '~/composables/useComponentHistory'
 import { formatStructurePreview, normalizeStructureForEditor } from '~/shared/modelUtils'
 import { uniqueConstructeurIds } from '~/shared/constructeurUtils'
 import type { ComponentModelStructure } from '~/shared/types/inventory'
@@ -567,7 +435,6 @@ import type { ModelType } from '~/services/modelTypes'
 import { canPreviewDocument } from '~/utils/documentPreview'
 import {
   type CustomFieldInput,
-  fieldKey,
   buildCustomFieldInputs,
   requiredCustomFieldsFilled as _requiredCustomFieldsFilled,
   saveCustomFieldValues as _saveCustomFieldValues,
@@ -580,11 +447,6 @@ import {
   documentThumbnailClass,
   downloadDocument,
 } from '~/shared/utils/documentDisplayUtils'
-import {
-  historyActionLabel,
-  formatHistoryDate,
-  historyDiffEntries as _historyDiffEntries,
-} from '~/shared/utils/historyDisplayUtils'
 
 interface ComponentCatalogType extends ModelType {
   structure: ComponentModelStructure | null
@@ -622,8 +484,6 @@ const componentDocuments = ref<any[]>([])
 const previewDocument = ref<any | null>(null)
 const previewVisible = ref(false)
 
-const historyEntries = computed<ComponentHistoryEntry[]>(() => history.value)
-
 const historyFieldLabels: Record<string, string> = {
   name: 'Nom',
   reference: 'Référence',
@@ -634,8 +494,6 @@ const historyFieldLabels: Record<string, string> = {
   constructeurIds: 'Fournisseurs',
 }
 
-const historyDiffEntries = (entry: ComponentHistoryEntry) =>
-  _historyDiffEntries(entry, historyFieldLabels)
 const selectedTypeId = ref<string>('')
 const editionForm = reactive({
   name: '' as string,

app/pages/component/create.vue

@@ -241,78 +241,7 @@
               Renseignez les valeurs propres à ce composant selon le squelette choisi.
             </p>
           </header>
-          <div class="grid grid-cols-1 gap-4 md:grid-cols-2">
-            <div
-              v-for="(field, index) in customFieldInputs"
-              :key="fieldKey(field, index)"
-              class="form-control"
-            >
-              <label class="label">
-                <span class="label-text">{{ field.name }}</span>
-                <span v-if="field.required" class="label-text-alt text-error">*</span>
-              </label>
-              <input
-                v-if="field.type === 'text'"
-                v-model="field.value"
-                type="text"
-                class="input input-bordered input-sm md:input-md"
-                :required="field.required"
-                :disabled="!canEdit || submitting"
-              >
-              <input
-                v-else-if="field.type === 'number'"
-                v-model="field.value"
-                type="number"
-                step="0.01"
-                class="input input-bordered input-sm md:input-md"
-                :required="field.required"
-                :disabled="!canEdit || submitting"
-              >
-              <select
-                v-else-if="field.type === 'select'"
-                v-model="field.value"
-                class="select select-bordered select-sm md:select-md"
-                :required="field.required"
-                :disabled="!canEdit || submitting"
-              >
-                <option value="">Sélectionner...</option>
-                <option
-                  v-for="option in field.options"
-                  :key="option"
-                  :value="option"
-                >
-                  {{ option }}
-                </option>
-              </select>
-              <label v-else-if="field.type === 'boolean'" class="flex items-center gap-3 cursor-pointer">
-                <input
-                  v-model="field.value"
-                  type="checkbox"
-                  class="toggle toggle-primary toggle-sm md:toggle-md"
-                  true-value="true"
-                  false-value="false"
-                  :disabled="!canEdit || submitting"
-                >
-                <span class="text-sm" :class="field.value === 'true' ? 'text-success font-medium' : 'text-base-content/60'">{{ field.value === 'true' ? 'Oui' : 'Non' }}</span>
-              </label>
-              <input
-                v-else-if="field.type === 'date'"
-                v-model="field.value"
-                type="date"
-                class="input input-bordered input-sm md:input-md"
-                :required="field.required"
-                :disabled="!canEdit || submitting"
-              >
-              <input
-                v-else
-                v-model="field.value"
-                type="text"
-                class="input input-bordered input-sm md:input-md"
-                :required="field.required"
-                :disabled="!canEdit || submitting"
-              >
-            </div>
-          </div>
+          <CustomFieldInputGrid :fields="customFieldInputs" :disabled="!canEdit || submitting" />
         </div>
 
         <div class="space-y-4 rounded-lg border border-base-200 bg-base-200/40 p-4">
@@ -396,7 +325,7 @@ const route = useRoute()
 const router = useRouter()
 const { get } = useApi()
 
-const { componentTypes, loadComponentTypes, loadingComponentTypes } = useComponentTypes()
+const { componentTypes, loadComponentTypes, loadingComponentTypes: loadingTypes } = useComponentTypes()
 const { pieceTypes, loadPieceTypes } = usePieceTypes()
 const { productTypes, loadProductTypes } = useProductTypes()
 const {
@@ -487,7 +416,6 @@ watch(selectedTypeId, (id) => {
   router.replace({ path: route.path, query: nextQuery }).catch(() => {})
 })
 
-const loadingTypes = computed(() => loadingComponentTypes.value)
 const componentTypeList = computed<ComponentCatalogType[]>(() =>
   (componentTypes.value || [])
     .filter((item: any) => item?.category === 'COMPONENT') as ComponentCatalogType[],
@@ -1026,8 +954,6 @@ interface CustomFieldInput {
   orderIndex: number
 }
 
-const fieldKey = (field: CustomFieldInput, index: number) =>
-  field.customFieldValueId || field.id || `${field.name}-${index}`
 
 const normalizeCustomFieldInputs = (structure: ComponentModelStructure | null): CustomFieldInput[] => {
   if (!structure || typeof structure !== 'object') {