diff --git a/app/components/DocumentUpload.vue b/app/components/DocumentUpload.vue
index 02920b5..ce9a188 100644
--- a/app/components/DocumentUpload.vue
+++ b/app/components/DocumentUpload.vue
@@ -130,7 +130,7 @@ const cleanupRemovedPreviews = (previousFiles = [], nextFiles = []) => {
   })
 }
 
-const selectedFiles = computed(() => internalFiles.value)
+const selectedFiles = internalFiles
 
 watch(
   () => props.modelValue,
diff --git a/app/components/StructureNodeEditor.vue b/app/components/StructureNodeEditor.vue
index 57052ad..8ae67d7 100644
--- a/app/components/StructureNodeEditor.vue
+++ b/app/components/StructureNodeEditor.vue
@@ -725,11 +725,6 @@ const handleProductTypeSelect = (product: ComponentModelProduct & Record<string,
   product.familyCode = option.code ?? product.familyCode ?? ''
 }
 
-const customFieldDragState = ref({
-  draggingIndex: null as number | null,
-  dropTargetIndex: null as number | null,
-})
-
 const reindexCustomFields = () => {
   if (!Array.isArray(props.node.customFields)) {
     return
@@ -742,59 +737,15 @@ const reindexCustomFields = () => {
   })
 }
 
-const resetCustomFieldDragState = () => {
-  customFieldDragState.value.draggingIndex = null
-  customFieldDragState.value.dropTargetIndex = null
-}
-
-const onCustomFieldDragStart = (index: number, event: DragEvent) => {
-  customFieldDragState.value.draggingIndex = index
-  customFieldDragState.value.dropTargetIndex = index
-  if (event.dataTransfer) {
-    event.dataTransfer.effectAllowed = 'move'
-  }
-}
-
-const onCustomFieldDragEnter = (index: number) => {
-  if (customFieldDragState.value.draggingIndex === null) {
-    return
-  }
-  customFieldDragState.value.dropTargetIndex = index
-}
-
-const onCustomFieldDrop = (index: number) => {
-  if (!Array.isArray(props.node.customFields)) {
-    resetCustomFieldDragState()
-    return
-  }
-  const from = customFieldDragState.value.draggingIndex
-  const to = index
-  if (from === null || to === null) {
-    resetCustomFieldDragState()
-    return
-  }
-  moveItemInPlace(props.node.customFields, from, to)
-  reindexCustomFields()
-  resetCustomFieldDragState()
-}
-
-const onCustomFieldDragEnd = () => {
-  resetCustomFieldDragState()
-}
-
-const customFieldReorderClass = (index: number) => {
-  if (customFieldDragState.value.draggingIndex === index) {
-    return 'border-dashed border-primary'
-  }
-  if (
-    customFieldDragState.value.draggingIndex !== null &&
-    customFieldDragState.value.dropTargetIndex === index &&
-    customFieldDragState.value.draggingIndex !== index
-  ) {
-    return 'border-primary border-dashed bg-primary/5'
-  }
-  return ''
-}
+const customFieldDrag = useDragReorder(
+  () => props.node.customFields,
+  { onReorder: reindexCustomFields },
+)
+const onCustomFieldDragStart = customFieldDrag.onDragStart
+const onCustomFieldDragEnter = customFieldDrag.onDragEnter
+const onCustomFieldDrop = customFieldDrag.onDrop
+const onCustomFieldDragEnd = customFieldDrag.onDragEnd
+const customFieldReorderClass = customFieldDrag.reorderClass
 
 const addCustomField = () => {
   ensureArray('customFields')
@@ -867,197 +818,32 @@ const removeSubComponent = (index: number) => {
   props.node.subcomponents.splice(index, 1)
 }
 
-const draggingPieceIndex = ref<number | null>(null)
-const pieceDropTargetIndex = ref<number | null>(null)
-const draggingProductIndex = ref<number | null>(null)
-const productDropTargetIndex = ref<number | null>(null)
-const draggingSubcomponentIndex = ref<number | null>(null)
-const subcomponentDropTargetIndex = ref<number | null>(null)
+const pieceDrag = useDragReorder(() => props.node.pieces)
+const onPieceDragStart = pieceDrag.onDragStart
+const onPieceDragEnter = pieceDrag.onDragEnter
+const onPieceDragOver = pieceDrag.onDragOver
+const onPieceDrop = pieceDrag.onDrop
+const onPieceDragEnd = pieceDrag.onDragEnd
+const pieceReorderClass = pieceDrag.reorderClass
 
-const moveItemInPlace = <T,>(list: T[], from: number, to: number) => {
-  if (from === to) {
-    return
-  }
-  if (from < 0 || to < 0 || from >= list.length || to >= list.length) {
-    return
-  }
-  const updated = list.slice()
-  const [item] = updated.splice(from, 1)
-  if (item === undefined) return
-  updated.splice(to, 0, item)
-  list.splice(0, list.length, ...updated)
-}
+const productDrag = useDragReorder(() => props.node.products)
+const onProductDragStart = productDrag.onDragStart
+const onProductDragEnter = productDrag.onDragEnter
+const onProductDragOver = productDrag.onDragOver
+const onProductDrop = productDrag.onDrop
+const onProductDragEnd = productDrag.onDragEnd
+const productReorderClass = productDrag.reorderClass
 
-const resetPieceDragState = () => {
-  draggingPieceIndex.value = null
-  pieceDropTargetIndex.value = null
-}
-
-const resetProductDragState = () => {
-  draggingProductIndex.value = null
-  productDropTargetIndex.value = null
-}
-
-const onPieceDragStart = (index: number, event: DragEvent) => {
-  draggingPieceIndex.value = index
-  pieceDropTargetIndex.value = index
-  if (event.dataTransfer) {
-    event.dataTransfer.effectAllowed = 'move'
-  }
-}
-
-const onPieceDragEnter = (index: number) => {
-  if (draggingPieceIndex.value === null) {
-    return
-  }
-  pieceDropTargetIndex.value = index
-}
-
-const onPieceDragOver = (event: DragEvent) => {
-  event.preventDefault()
-}
-
-const onPieceDrop = (index: number) => {
-  if (!Array.isArray(props.node.pieces)) {
-    resetPieceDragState()
-    return
-  }
-  const from = draggingPieceIndex.value
-  const to = index
-  if (from === null || to === null) {
-    resetPieceDragState()
-    return
-  }
-  moveItemInPlace(props.node.pieces, from, to)
-  resetPieceDragState()
-}
-
-const onPieceDragEnd = () => {
-  resetPieceDragState()
-}
-
-const pieceReorderClass = (index: number) => {
-  if (draggingPieceIndex.value === index) {
-    return 'border-dashed border-primary'
-  }
-  if (
-    draggingPieceIndex.value !== null &&
-    pieceDropTargetIndex.value === index &&
-    draggingPieceIndex.value !== index
-  ) {
-    return 'border-primary border-dashed bg-primary/5'
-  }
-  return ''
-}
-
-const onProductDragStart = (index: number, event: DragEvent) => {
-  draggingProductIndex.value = index
-  productDropTargetIndex.value = index
-  if (event.dataTransfer) {
-    event.dataTransfer.effectAllowed = 'move'
-  }
-}
-
-const onProductDragEnter = (index: number) => {
-  if (draggingProductIndex.value === null) {
-    return
-  }
-  productDropTargetIndex.value = index
-}
-
-const onProductDragOver = (event: DragEvent) => {
-  event.preventDefault()
-}
-
-const onProductDrop = (index: number) => {
-  if (!Array.isArray(props.node.products)) {
-    resetProductDragState()
-    return
-  }
-  const from = draggingProductIndex.value
-  const to = index
-  if (from === null || to === null) {
-    resetProductDragState()
-    return
-  }
-  moveItemInPlace(props.node.products, from, to)
-  resetProductDragState()
-}
-
-const onProductDragEnd = () => {
-  resetProductDragState()
-}
-
-const productReorderClass = (index: number) => {
-  if (draggingProductIndex.value === index) {
-    return 'border-dashed border-primary'
-  }
-  if (
-    draggingProductIndex.value !== null &&
-    productDropTargetIndex.value === index &&
-    draggingProductIndex.value !== index
-  ) {
-    return 'border-primary border-dashed bg-primary/5'
-  }
-  return ''
-}
-
-const resetSubcomponentDragState = () => {
-  draggingSubcomponentIndex.value = null
-  subcomponentDropTargetIndex.value = null
-}
-
-const onSubcomponentDragStart = (index: number, event: DragEvent) => {
-  draggingSubcomponentIndex.value = index
-  subcomponentDropTargetIndex.value = index
-  if (event.dataTransfer) {
-    event.dataTransfer.effectAllowed = 'move'
-  }
-}
-
-const onSubcomponentDragEnter = (index: number) => {
-  if (draggingSubcomponentIndex.value === null) {
-    return
-  }
-  subcomponentDropTargetIndex.value = index
-}
-
-const onSubcomponentDragOver = (event: DragEvent) => {
-  event.preventDefault()
-}
-
-const onSubcomponentDrop = (index: number) => {
-  if (!Array.isArray(props.node.subcomponents)) {
-    resetSubcomponentDragState()
-    return
-  }
-  const from = draggingSubcomponentIndex.value
-  const to = index
-  if (from === null || to === null) {
-    resetSubcomponentDragState()
-    return
-  }
-  moveItemInPlace(props.node.subcomponents, from, to)
-  resetSubcomponentDragState()
-}
-
-const onSubcomponentDragEnd = () => {
-  resetSubcomponentDragState()
-}
-
-const subcomponentReorderClass = (index: number) => {
-  if (draggingSubcomponentIndex.value === index) {
-    return 'ring-2 ring-primary'
-  }
-  if (
-    draggingSubcomponentIndex.value !== null &&
-    subcomponentDropTargetIndex.value === index &&
-    draggingSubcomponentIndex.value !== index
-  ) {
-    return 'ring-2 ring-primary/70'
-  }
-  return ''
-}
+const subcomponentDrag = useDragReorder(
+  () => props.node.subcomponents,
+  { draggingClass: 'ring-2 ring-primary', dropTargetClass: 'ring-2 ring-primary/70' },
+)
+const onSubcomponentDragStart = subcomponentDrag.onDragStart
+const onSubcomponentDragEnter = subcomponentDrag.onDragEnter
+const onSubcomponentDragOver = subcomponentDrag.onDragOver
+const onSubcomponentDrop = subcomponentDrag.onDrop
+const onSubcomponentDragEnd = subcomponentDrag.onDragEnd
+const subcomponentReorderClass = subcomponentDrag.reorderClass
 
 watch(
   canManageSubcomponents,
diff --git a/app/components/common/CustomFieldInputGrid.vue b/app/components/common/CustomFieldInputGrid.vue
new file mode 100644
index 0000000..70c048f
--- /dev/null
+++ b/app/components/common/CustomFieldInputGrid.vue
@@ -0,0 +1,83 @@
+<template>
+  <div class="grid grid-cols-1 gap-4 md:grid-cols-2">
+    <div
+      v-for="(field, index) in fields"
+      :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="disabled"
+      >
+      <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="disabled"
+      >
+      <select
+        v-else-if="field.type === 'select'"
+        v-model="field.value"
+        class="select select-bordered select-sm md:select-md"
+        :required="field.required"
+        :disabled="disabled"
+      >
+        <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="disabled"
+        >
+        <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="disabled"
+      >
+      <input
+        v-else
+        v-model="field.value"
+        type="text"
+        class="input input-bordered input-sm md:input-md"
+        :required="field.required"
+        :disabled="disabled"
+      >
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { fieldKey, type CustomFieldInput } from '~/shared/utils/customFieldFormUtils'
+
+defineProps<{
+  fields: CustomFieldInput[]
+  disabled?: boolean
+}>()
+</script>
diff --git a/app/components/common/EntityHistorySection.vue b/app/components/common/EntityHistorySection.vue
new file mode 100644
index 0000000..d874353
--- /dev/null
+++ b/app/components/common/EntityHistorySection.vue
@@ -0,0 +1,97 @@
+<template>
+  <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="entries.length" class="badge badge-outline">
+        {{ entries.length }} entrée{{ entries.length > 1 ? 's' : '' }}
+      </span>
+    </header>
+
+    <div v-if="loading" 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="error" class="alert alert-warning">
+      <span>{{ error }}</span>
+    </div>
+
+    <p v-else-if="entries.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 entries"
+        :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="diffEntries(entry).length"
+          class="mt-2 space-y-1 text-xs"
+        >
+          <li
+            v-for="diffEntry in diffEntries(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>
+</template>
+
+<script setup lang="ts">
+import {
+  historyActionLabel,
+  formatHistoryDate,
+  historyDiffEntries,
+  type HistoryDiffEntry,
+} from '~/shared/utils/historyDisplayUtils'
+
+interface HistoryEntry {
+  id: string
+  action: string
+  createdAt: string
+  actor?: { label?: string } | null
+  diff?: Record<string, { from?: unknown; to?: unknown }> | null
+  snapshot?: { name?: string } | null
+}
+
+const props = defineProps<{
+  entries: HistoryEntry[]
+  loading?: boolean
+  error?: string | null
+  fieldLabels: Record<string, string>
+}>()
+
+const diffEntries = (entry: HistoryEntry): HistoryDiffEntry[] =>
+  historyDiffEntries(entry, props.fieldLabels)
+</script>
diff --git a/app/composables/useDragReorder.ts b/app/composables/useDragReorder.ts
new file mode 100644
index 0000000..4523e98
--- /dev/null
+++ b/app/composables/useDragReorder.ts
@@ -0,0 +1,109 @@
+import { ref } from 'vue'
+
+interface DragReorderHandlers {
+  draggingIndex: Ref<number | null>
+  dropTargetIndex: Ref<number | null>
+  onDragStart: (index: number, event: DragEvent) => void
+  onDragEnter: (index: number) => void
+  onDragOver: (event: DragEvent) => void
+  onDrop: (index: number) => void
+  onDragEnd: () => void
+  reorderClass: (index: number) => string
+  reset: () => void
+}
+
+interface DragReorderOptions {
+  draggingClass?: string
+  dropTargetClass?: string
+  onReorder?: () => void
+}
+
+function moveItemInPlace<T>(list: T[], from: number, to: number): void {
+  if (from === to) return
+  if (from < 0 || to < 0 || from >= list.length || to >= list.length) return
+  const updated = list.slice()
+  const [item] = updated.splice(from, 1)
+  if (item === undefined) return
+  updated.splice(to, 0, item)
+  list.splice(0, list.length, ...updated)
+}
+
+export function useDragReorder(
+  getList: () => unknown[] | undefined,
+  options: DragReorderOptions = {},
+): DragReorderHandlers {
+  const {
+    draggingClass = 'border-dashed border-primary',
+    dropTargetClass = 'border-primary border-dashed bg-primary/5',
+    onReorder,
+  } = options
+
+  const draggingIndex = ref<number | null>(null)
+  const dropTargetIndex = ref<number | null>(null)
+
+  const reset = () => {
+    draggingIndex.value = null
+    dropTargetIndex.value = null
+  }
+
+  const onDragStart = (index: number, event: DragEvent) => {
+    draggingIndex.value = index
+    dropTargetIndex.value = index
+    if (event.dataTransfer) {
+      event.dataTransfer.effectAllowed = 'move'
+    }
+  }
+
+  const onDragEnter = (index: number) => {
+    if (draggingIndex.value === null) return
+    dropTargetIndex.value = index
+  }
+
+  const onDragOver = (event: DragEvent) => {
+    event.preventDefault()
+  }
+
+  const onDrop = (index: number) => {
+    const list = getList()
+    if (!Array.isArray(list)) {
+      reset()
+      return
+    }
+    const from = draggingIndex.value
+    if (from === null) {
+      reset()
+      return
+    }
+    moveItemInPlace(list, from, index)
+    onReorder?.()
+    reset()
+  }
+
+  const onDragEnd = () => {
+    reset()
+  }
+
+  const reorderClass = (index: number): string => {
+    if (draggingIndex.value === index) return draggingClass
+    if (
+      draggingIndex.value !== null
+      && dropTargetIndex.value === index
+      && draggingIndex.value !== index
+    ) {
+      return dropTargetClass
+    }
+    return ''
+  }
+
+  return {
+    draggingIndex,
+    dropTargetIndex,
+    onDragStart,
+    onDragEnter,
+    onDragOver,
+    onDrop,
+    onDragEnd,
+    reorderClass,
+    reset,
+  }
+}
diff --git a/app/pages/component-catalog.vue b/app/pages/component-catalog.vue
index 5c96a92..711cd5c 100644
--- a/app/pages/component-catalog.vue
+++ b/app/pages/component-catalog.vue
@@ -126,8 +126,9 @@ import { useComposants } from '~/composables/useComposants'
 import { useComponentTypes } from '~/composables/useComponentTypes'
 import { useDataTable } from '~/composables/useDataTable'
 import DocumentThumbnail from '~/components/DocumentThumbnail.vue'
-import { isImageDocument, isPdfDocument } from '~/utils/documentPreview'
 import { resolveDeleteImpact, buildDeleteMessage } from '~/shared/utils/deleteImpactUtils'
+import { resolvePrimaryDocument, resolvePreviewAlt } from '~/shared/utils/catalogDisplayUtils'
+import { formatFrenchDate } from '~/utils/date'
 
 const { canEdit } = usePermissions()
 const { composants, total, loadComposants, loading: loadingComposants, deleteComposant } = useComposants()
@@ -178,23 +179,6 @@ async function fetchComposants() {
   })
 }
 
-const resolvePrimaryDocument = (component: Record<string, any>) => {
-  const documents = Array.isArray(component?.documents) ? component.documents : []
-  if (!documents.length) return null
-  const normalized = documents.filter((doc: any) => doc && typeof doc === 'object')
-  const withPath = normalized.filter((doc: any) => doc?.fileUrl || doc?.path)
-  const pdf = withPath.find((doc: any) => isPdfDocument(doc))
-  if (pdf) return pdf
-  const image = withPath.find((doc: any) => isImageDocument(doc))
-  if (image) return image
-  return withPath[0] ?? normalized[0] ?? null
-}
-
-const resolvePreviewAlt = (component: Record<string, any>) => {
-  const parts = [component?.name, component?.reference].filter(Boolean)
-  return parts.length ? `Aperçu du document de ${parts.join(' – ')}` : 'Aperçu du document'
-}
-
 const resolveComponentType = (component: Record<string, any>) => {
   if (component?.typeComposant?.name) return component.typeComposant.name
   if (component?.typeComposantLabel) return component.typeComposantLabel
@@ -212,12 +196,7 @@ const handleDeleteComponent = async (component: Record<string, any>) => {
   fetchComposants()
 }
 
-const formatDate = (dateStr: string) => {
-  if (!dateStr) return '—'
-  const date = new Date(dateStr)
-  if (Number.isNaN(date.getTime())) return '—'
-  return new Intl.DateTimeFormat('fr-FR', { day: '2-digit', month: '2-digit', year: 'numeric' }).format(date)
-}
+const formatDate = formatFrenchDate
 
 onMounted(async () => {
   await Promise.all([fetchComposants(), loadComponentTypes()])
diff --git a/app/pages/component/[id]/edit.vue b/app/pages/component/[id]/edit.vue
index aea3a59..81a8850 100644
--- a/app/pages/component/[id]/edit.vue
+++ b/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,
diff --git a/app/pages/component/create.vue b/app/pages/component/create.vue
index 3797dd0..834f94c 100644
--- a/app/pages/component/create.vue
+++ b/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') {
diff --git a/app/pages/constructeurs.vue b/app/pages/constructeurs.vue
index 5c3d44b..e82c14e 100644
--- a/app/pages/constructeurs.vue
+++ b/app/pages/constructeurs.vue
@@ -100,6 +100,7 @@ import { useConstructeurs } from '~/composables/useConstructeurs'
 import { useToast } from '~/composables/useToast'
 import { usePersistedValue } from '~/composables/usePersistedValue'
 import { formatPhone } from '~/utils/formatters/phone'
+import { formatFrenchDate } from '~/utils/date'
 import IconLucidePlus from '~icons/lucide/plus'
 
 const { canEdit } = usePermissions()
@@ -153,16 +154,7 @@ const debouncedSearch = debounce(async () => {
   await searchConstructeurs(searchTerm.value)
 }, 300)
 
-const formatDate = (dateStr) => {
-  if (!dateStr) return '—'
-  const date = new Date(dateStr)
-  if (Number.isNaN(date.getTime())) return '—'
-  return new Intl.DateTimeFormat('fr-FR', {
-    day: '2-digit',
-    month: '2-digit',
-    year: 'numeric',
-  }).format(date)
-}
+const formatDate = formatFrenchDate
 
 const formatPhoneDisplay = (value) => {
   const formatted = formatPhone(value)
diff --git a/app/pages/documents.vue b/app/pages/documents.vue
index f57a16b..25f5dac 100644
--- a/app/pages/documents.vue
+++ b/app/pages/documents.vue
@@ -3,7 +3,7 @@
     <DocumentPreviewModal
       :document="previewDocument"
       :visible="previewVisible"
-      :documents="documentRows"
+      :documents="documents"
       @close="closePreview"
     />
 
@@ -11,7 +11,7 @@
       <div class="card-body space-y-6">
         <DataTable
           :columns="columns"
-          :rows="documentRows"
+          :rows="documents"
           :loading="loading"
           :sort="table.sort.value"
           :pagination="paginationState"
@@ -148,7 +148,6 @@ const attachmentFilter = table.filters.filter as Ref<string>
 const previewDocument = ref<any>(null)
 const previewVisible = ref(false)
 
-const documentRows = computed(() => documents.value)
 const documentsOnPage = computed(() => documents.value.length)
 const paginationState = table.pagination(total, documentsOnPage)
 
diff --git a/app/pages/pieces-catalog.vue b/app/pages/pieces-catalog.vue
index 578de4c..91ae219 100644
--- a/app/pages/pieces-catalog.vue
+++ b/app/pages/pieces-catalog.vue
@@ -149,8 +149,9 @@ import { usePieces } from '~/composables/usePieces'
 import { usePieceTypes } from '~/composables/usePieceTypes'
 import { useDataTable } from '~/composables/useDataTable'
 import DocumentThumbnail from '~/components/DocumentThumbnail.vue'
-import { isImageDocument, isPdfDocument } from '~/utils/documentPreview'
 import { resolveDeleteImpact, buildDeleteMessage } from '~/shared/utils/deleteImpactUtils'
+import { resolvePrimaryDocument, resolvePreviewAlt, resolveSupplierNames, buildSuppliersDisplay } from '~/shared/utils/catalogDisplayUtils'
+import { formatFrenchDate } from '~/utils/date'
 
 const { canEdit } = usePermissions()
 const { pieces, total, loadPieces, loading: loadingPieces, deletePiece } = usePieces()
@@ -203,80 +204,14 @@ async function fetchPieces() {
   })
 }
 
-const resolvePrimaryDocument = (piece: Record<string, any>) => {
-  const documents = Array.isArray(piece?.documents) ? piece.documents : []
-  if (!documents.length) return null
-  const normalized = documents.filter((doc: any) => doc && typeof doc === 'object')
-  const withPath = normalized.filter((doc: any) => doc?.fileUrl || doc?.path)
-  const pdf = withPath.find((doc: any) => isPdfDocument(doc))
-  if (pdf) return pdf
-  const image = withPath.find((doc: any) => isImageDocument(doc))
-  if (image) return image
-  return withPath[0] ?? normalized[0] ?? null
-}
-
-const resolvePreviewAlt = (piece: Record<string, any>) => {
-  const parts = [piece?.name, piece?.reference].filter(Boolean)
-  return parts.length ? `Aperçu du document de ${parts.join(' – ')}` : 'Aperçu du document'
-}
-
 const resolvePieceType = (piece: Record<string, any>) => {
   if (piece?.typePiece?.name) return piece.typePiece.name
   if (piece?.typePieceLabel) return piece.typePieceLabel
   return '—'
 }
 
-const MAX_VISIBLE_SUPPLIERS = 3
-
-const resolvePieceSuppliers = (piece: Record<string, any>) => {
-  const names: string[] = []
-  const seen = new Set<string>()
-
-  const pushName = (maybeName: unknown) => {
-    if (typeof maybeName !== 'string') return
-    const normalized = maybeName.trim().replace(/\s+/g, ' ')
-    if (!normalized.length) return
-    const key = normalized.toLowerCase()
-    if (seen.has(key)) return
-    seen.add(key)
-    names.push(normalized)
-  }
-
-  const collectConstructeurs = (value: unknown): void => {
-    if (!value) return
-    if (Array.isArray(value)) { value.forEach(collectConstructeurs); return }
-    if (typeof value === 'string') { pushName(value); return }
-    if (typeof value === 'object') {
-      const record = value as Record<string, any>
-      pushName(record?.name ?? record?.label ?? record?.companyName ?? record?.company ?? null)
-      if (record?.constructeur) collectConstructeurs(record.constructeur)
-      if (Array.isArray(record?.constructeurs)) collectConstructeurs(record.constructeurs)
-    }
-  }
-
-  const collectFromLabel = (value: unknown): void => {
-    if (typeof value !== 'string') return
-    value.split(/[,;\\/•·|]+/).map(part => part.trim()).filter(Boolean).forEach(pushName)
-  }
-
-  collectConstructeurs(piece?.constructeurs)
-  collectConstructeurs(piece?.constructeur)
-  collectConstructeurs(piece?.product?.constructeurs)
-  collectConstructeurs(piece?.product?.constructeur)
-  collectFromLabel(piece?.constructeursLabel)
-  collectFromLabel(piece?.supplierLabel)
-  collectFromLabel(piece?.product?.constructeursLabel)
-  collectFromLabel(piece?.product?.supplierLabel)
-
-  return names
-}
-
-const buildPieceSuppliersDisplay = (piece: Record<string, any>) => {
-  const suppliers = resolvePieceSuppliers(piece)
-  const visible = suppliers.slice(0, MAX_VISIBLE_SUPPLIERS)
-  const overflow = Math.max(suppliers.length - visible.length, 0)
-  return { suppliers, visible, overflow, tooltip: suppliers.length ? suppliers.join(', ') : '' }
-}
+const buildPieceSuppliersDisplay = (piece: Record<string, any>) =>
+  buildSuppliersDisplay(resolveSupplierNames(piece, 'product'))
 
 const { confirm } = useConfirm()
 
@@ -289,12 +224,7 @@ const handleDeletePiece = async (piece: Record<string, any>) => {
   fetchPieces()
 }
 
-const formatDate = (dateStr: string) => {
-  if (!dateStr) return '—'
-  const date = new Date(dateStr)
-  if (Number.isNaN(date.getTime())) return '—'
-  return new Intl.DateTimeFormat('fr-FR', { day: '2-digit', month: '2-digit', year: 'numeric' }).format(date)
-}
+const formatDate = formatFrenchDate
 
 onMounted(async () => {
   await Promise.all([fetchPieces(), loadPieceTypes()])
diff --git a/app/pages/pieces/[id]/edit.vue b/app/pages/pieces/[id]/edit.vue
index d5d06b2..e5d8143 100644
--- a/app/pages/pieces/[id]/edit.vue
+++ b/app/pages/pieces/[id]/edit.vue
@@ -222,78 +222,7 @@
               Mettez à jour les valeurs propres à cette pièce.
             </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">
@@ -396,73 +325,12 @@
           </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="/pieces-catalog" class="btn btn-ghost" :class="{ 'btn-disabled': saving }">
@@ -502,7 +370,7 @@ import { useApi } from '~/composables/useApi'
 import { useToast } from '~/composables/useToast'
 import { useDocuments } from '~/composables/useDocuments'
 import { useConstructeurs } from '~/composables/useConstructeurs'
-import { usePieceHistory, type PieceHistoryEntry } from '~/composables/usePieceHistory'
+import { usePieceHistory } from '~/composables/usePieceHistory'
 import { extractRelationId } from '~/shared/apiRelations'
 import { canPreviewDocument } from '~/utils/documentPreview'
 import { formatPieceStructurePreview } from '~/shared/modelUtils'
@@ -512,7 +380,6 @@ import type { ModelType } from '~/services/modelTypes'
 import { getModelType } from '~/services/modelTypes'
 import {
   type CustomFieldInput,
-  fieldKey,
   buildCustomFieldInputs,
   requiredCustomFieldsFilled as _requiredCustomFieldsFilled,
   saveCustomFieldValues as _saveCustomFieldValues,
@@ -525,11 +392,6 @@ import {
   documentThumbnailClass,
   downloadDocument,
 } from '~/shared/utils/documentDisplayUtils'
-import {
-  historyActionLabel,
-  formatHistoryDate,
-  historyDiffEntries as _historyDiffEntries,
-} from '~/shared/utils/historyDisplayUtils'
 
 interface PieceCatalogType extends ModelType {
   structure: PieceModelStructure | null
@@ -563,8 +425,6 @@ const pieceDocuments = ref<any[]>([])
 const previewDocument = ref<any | null>(null)
 const previewVisible = ref(false)
 
-const historyEntries = computed<PieceHistoryEntry[]>(() => history.value)
-
 const historyFieldLabels: Record<string, string> = {
   name: 'Nom',
   reference: 'Référence',
@@ -575,9 +435,6 @@ const historyFieldLabels: Record<string, string> = {
   constructeurIds: 'Fournisseurs',
 }
 
-const historyDiffEntries = (entry: PieceHistoryEntry) =>
-  _historyDiffEntries(entry, historyFieldLabels)
-
 const selectedTypeId = ref<string>('')
 const pieceTypeDetails = ref<any | null>(null)
 const editionForm = reactive({
diff --git a/app/pages/pieces/create.vue b/app/pages/pieces/create.vue
index 6105f7c..9ccc3e4 100644
--- a/app/pages/pieces/create.vue
+++ b/app/pages/pieces/create.vue
@@ -193,78 +193,7 @@
               Renseignez les valeurs propres à cette pièce. Ces champs complètent le squelette sélectionné.
             </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">
@@ -324,7 +253,6 @@ import type { PieceModelProduct, PieceModelStructure } from '~/shared/types/inve
 import type { ModelType } from '~/services/modelTypes'
 import {
   type CustomFieldInput,
-  fieldKey,
   normalizeCustomFieldInputs,
   requiredCustomFieldsFilled as _requiredCustomFieldsFilled,
   saveCustomFieldValues as _saveCustomFieldValues,
@@ -338,7 +266,7 @@ interface PieceCatalogType extends ModelType {
 const route = useRoute()
 const router = useRouter()
 
-const { pieceTypes, loadPieceTypes, loadingPieceTypes } = usePieceTypes()
+const { pieceTypes, loadPieceTypes, loadingPieceTypes: loadingTypes } = usePieceTypes()
 const { createPiece } = usePieces()
 const toast = useToast()
 const { upsertCustomFieldValue, updateCustomFieldValue } = useCustomFields()
@@ -385,7 +313,6 @@ watch(selectedTypeId, (id) => {
   router.replace({ path: route.path, query: nextQuery }).catch(() => {})
 })
 
-const loadingTypes = computed(() => loadingPieceTypes.value)
 const pieceTypeList = computed<PieceCatalogType[]>(() => (pieceTypes.value || []) as PieceCatalogType[])
 
 const typeOptionLabel = (type?: PieceCatalogType) =>
diff --git a/app/pages/product-catalog.vue b/app/pages/product-catalog.vue
index d7f0da7..d39650f 100644
--- a/app/pages/product-catalog.vue
+++ b/app/pages/product-catalog.vue
@@ -63,7 +63,7 @@
 
           <template #cell-preview="{ row }">
             <DocumentThumbnail
-              :document="resolvePrimaryDocument(row.product)"
+              :document="resolvePrimaryDocument(row.product, true)"
               :alt="resolvePreviewAlt(row.product)"
             />
           </template>
@@ -147,8 +147,8 @@ import { useProductTypes } from '~/composables/useProductTypes'
 import { useToast } from '~/composables/useToast'
 import { useDataTable } from '~/composables/useDataTable'
 import DocumentThumbnail from '~/components/DocumentThumbnail.vue'
-import { isImageDocument, isPdfDocument } from '~/utils/documentPreview'
 import { resolveDeleteImpact, buildDeleteMessage } from '~/shared/utils/deleteImpactUtils'
+import { resolvePrimaryDocument, resolvePreviewAlt, resolveSupplierNames, buildSuppliersDisplay } from '~/shared/utils/catalogDisplayUtils'
 
 const { canEdit } = usePermissions()
 
@@ -197,7 +197,7 @@ const productRows = computed(() =>
   normalizedProducts.value.map(product => ({
     id: product.id,
     product,
-    suppliers: buildSuppliersDisplay(product),
+    suppliers: buildProductSuppliersDisplay(product),
   })),
 )
 
@@ -225,72 +225,8 @@ const formatPrice = (value: any) => {
   return Number.isNaN(number) ? '—' : priceFormatter.format(number)
 }
 
-const MAX_VISIBLE_SUPPLIERS = 3
-
-const resolveProductSuppliers = (product: Record<string, any>) => {
-  const names: string[] = []
-  const seen = new Set<string>()
-
-  const pushName = (maybeName: unknown) => {
-    if (typeof maybeName !== 'string') return
-    const normalized = maybeName.trim().replace(/\s+/g, ' ')
-    if (!normalized.length) return
-    const key = normalized.toLowerCase()
-    if (seen.has(key)) return
-    seen.add(key)
-    names.push(normalized)
-  }
-
-  const collectConstructeurs = (value: unknown): void => {
-    if (!value) return
-    if (Array.isArray(value)) { value.forEach(collectConstructeurs); return }
-    if (typeof value === 'string') { pushName(value); return }
-    if (typeof value === 'object') {
-      const record = value as Record<string, any>
-      pushName(record?.name ?? record?.label ?? record?.companyName ?? record?.company ?? null)
-      if (record?.constructeur) collectConstructeurs(record.constructeur)
-      if (Array.isArray(record?.constructeurs)) collectConstructeurs(record.constructeurs)
-    }
-  }
-
-  const collectFromLabel = (value: unknown): void => {
-    if (typeof value !== 'string') return
-    value.split(/[,;\\/•·|]+/).map(part => part.trim()).filter(Boolean).forEach(pushName)
-  }
-
-  collectConstructeurs(product?.constructeurs)
-  collectConstructeurs(product?.constructeur)
-  collectFromLabel(product?.constructeursLabel)
-  collectFromLabel(product?.supplierLabel)
-  collectFromLabel(product?.suppliers)
-
-  return names
-}
-
-const buildSuppliersDisplay = (product: Record<string, any>) => {
-  const suppliers = resolveProductSuppliers(product)
-  const visible = suppliers.slice(0, MAX_VISIBLE_SUPPLIERS)
-  const overflow = Math.max(suppliers.length - visible.length, 0)
-  return { suppliers, visible, overflow, tooltip: suppliers.length ? suppliers.join(', ') : '' }
-}
-
-const resolvePrimaryDocument = (product: Record<string, any>) => {
-  const documents = Array.isArray(product?.documents) ? product.documents : []
-  if (!documents.length) return null
-  const normalized = documents.filter((doc: any) => doc && typeof doc === 'object')
-  const withPath = normalized.filter((doc: any) => doc?.fileUrl || doc?.path)
-  if (!withPath.length) return normalized[0] ?? null
-  const images = withPath.filter((doc: any) => isImageDocument(doc))
-  if (images.length) return images[0]
-  const pdf = withPath.find((doc: any) => isPdfDocument(doc))
-  if (pdf) return pdf
-  return withPath[0]
-}
-
-const resolvePreviewAlt = (product: Record<string, any>) => {
-  const parts = [product?.name, product?.reference].filter(Boolean)
-  return parts.length ? `Aperçu du document de ${parts.join(' – ')}` : 'Aperçu du document'
-}
+const buildProductSuppliersDisplay = (product: Record<string, any>) =>
+  buildSuppliersDisplay(resolveSupplierNames(product))
 
 const reload = () => fetchProducts()
 
diff --git a/app/pages/product/[id]/edit.vue b/app/pages/product/[id]/edit.vue
index 2446f65..c5e8acd 100644
--- a/app/pages/product/[id]/edit.vue
+++ b/app/pages/product/[id]/edit.vue
@@ -133,78 +133,7 @@
               Mettez à jour les valeurs propres à ce produit.
             </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">
@@ -303,73 +232,12 @@
           </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="/product-catalog" class="btn btn-ghost" :class="{ 'btn-disabled': saving }">
@@ -410,7 +278,7 @@ import { useToast } from '~/composables/useToast'
 import { humanizeError } from '~/shared/utils/errorMessages'
 import { useDocuments } from '~/composables/useDocuments'
 import { useConstructeurs } from '~/composables/useConstructeurs'
-import { useProductHistory, type ProductHistoryEntry } from '~/composables/useProductHistory'
+import { useProductHistory } from '~/composables/useProductHistory'
 import { formatProductStructurePreview, normalizeProductStructureForSave } from '~/shared/modelUtils'
 import { uniqueConstructeurIds } from '~/shared/constructeurUtils'
 import { getModelType } from '~/services/modelTypes'
@@ -418,7 +286,6 @@ import type { ProductModelStructure } from '~/shared/types/inventory'
 import { canPreviewDocument } from '~/utils/documentPreview'
 import {
   type CustomFieldInput,
-  fieldKey,
   buildCustomFieldInputs,
   requiredCustomFieldsFilled as _requiredCustomFieldsFilled,
   saveCustomFieldValues as _saveCustomFieldValues,
@@ -431,11 +298,6 @@ import {
   documentThumbnailClass,
   downloadDocument,
 } from '~/shared/utils/documentDisplayUtils'
-import {
-  historyActionLabel,
-  formatHistoryDate,
-  historyDiffEntries as _historyDiffEntries,
-} from '~/shared/utils/historyDisplayUtils'
 
 const { canEdit } = usePermissions()
 const route = useRoute()
@@ -469,8 +331,6 @@ const productDocuments = ref<any[]>([])
 const previewDocument = ref<any | null>(null)
 const previewVisible = ref(false)
 
-const historyEntries = computed<ProductHistoryEntry[]>(() => history.value)
-
 const historyFieldLabels: Record<string, string> = {
   name: 'Nom',
   reference: 'Référence',
@@ -479,9 +339,6 @@ const historyFieldLabels: Record<string, string> = {
   constructeurIds: 'Fournisseurs',
 }
 
-const historyDiffEntries = (entry: ProductHistoryEntry) =>
-  _historyDiffEntries(entry, historyFieldLabels)
-
 const refreshCustomFieldInputs = (
   structureOverride?: ProductModelStructure | null,
   valuesOverride?: any[] | null,
diff --git a/app/pages/product/create.vue b/app/pages/product/create.vue
index 566bc2a..28144d1 100644
--- a/app/pages/product/create.vue
+++ b/app/pages/product/create.vue
@@ -119,78 +119,7 @@
               Renseignez les valeurs propres à ce produit catalogue.
             </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">
@@ -262,7 +191,7 @@ interface ProductCatalogType extends ModelType {
 const route = useRoute()
 const router = useRouter()
 
-const { productTypes, loadProductTypes, loadingProductTypes } = useProductTypes()
+const { productTypes, loadProductTypes, loadingProductTypes: loadingTypes } = useProductTypes()
 const { createProduct } = useProducts()
 const toast = useToast()
 const { upsertCustomFieldValue } = useCustomFields()
@@ -283,7 +212,6 @@ const uploadingDocuments = ref(false)
 
 const customFieldInputs = ref<CustomFieldInput[]>([])
 
-const loadingTypes = computed(() => loadingProductTypes.value)
 const productTypeList = computed<ProductCatalogType[]>(() =>
   (productTypes.value || []) as ProductCatalogType[],
 )
@@ -354,9 +282,6 @@ const canSubmit = computed(() => Boolean(
   !submitting.value,
 ))
 
-const fieldKey = (field: CustomFieldInput, index: number) =>
-  field.customFieldId || field.id || `${field.name}-${index}`
-
 const clearForm = () => {
   creationForm.name = ''
   creationForm.reference = ''
diff --git a/app/shared/utils/catalogDisplayUtils.ts b/app/shared/utils/catalogDisplayUtils.ts
new file mode 100644
index 0000000..5f710a1
--- /dev/null
+++ b/app/shared/utils/catalogDisplayUtils.ts
@@ -0,0 +1,87 @@
+import { isImageDocument, isPdfDocument } from '~/utils/documentPreview'
+
+/**
+ * Selects the best document for thumbnail preview from an entity's documents array.
+ * Default priority: PDF first, then images. Use `preferImages` to reverse.
+ */
+export const resolvePrimaryDocument = (entity: Record<string, any>, preferImages = false): any | null => {
+  const documents = Array.isArray(entity?.documents) ? entity.documents : []
+  if (!documents.length) return null
+  const normalized = documents.filter((doc: any) => doc && typeof doc === 'object')
+  const withPath = normalized.filter((doc: any) => doc?.fileUrl || doc?.path)
+  if (!withPath.length) return normalized[0] ?? null
+  const first = preferImages ? isImageDocument : isPdfDocument
+  const second = preferImages ? isPdfDocument : isImageDocument
+  const a = withPath.find((doc: any) => first(doc))
+  if (a) return a
+  const b = withPath.find((doc: any) => second(doc))
+  if (b) return b
+  return withPath[0]
+}
+
+/**
+ * Builds alt text for a document preview thumbnail.
+ */
+export const resolvePreviewAlt = (entity: Record<string, any>): string => {
+  const parts = [entity?.name, entity?.reference].filter(Boolean)
+  return parts.length ? `Aperçu du document de ${parts.join(' – ')}` : 'Aperçu du document'
+}
+
+/**
+ * Supplier name resolution: extracts unique supplier names from entity relations.
+ */
+export const resolveSupplierNames = (entity: Record<string, any>, nestedKey?: string): string[] => {
+  const names: string[] = []
+  const seen = new Set<string>()
+
+  const pushName = (maybeName: unknown) => {
+    if (typeof maybeName !== 'string') return
+    const normalized = maybeName.trim().replace(/\s+/g, ' ')
+    if (!normalized.length) return
+    const key = normalized.toLowerCase()
+    if (seen.has(key)) return
+    seen.add(key)
+    names.push(normalized)
+  }
+
+  const collectConstructeurs = (value: unknown): void => {
+    if (!value) return
+    if (Array.isArray(value)) { value.forEach(collectConstructeurs); return }
+    if (typeof value === 'string') { pushName(value); return }
+    if (typeof value === 'object') {
+      const record = value as Record<string, any>
+      pushName(record?.name ?? record?.label ?? record?.companyName ?? record?.company ?? null)
+      if (record?.constructeur) collectConstructeurs(record.constructeur)
+      if (Array.isArray(record?.constructeurs)) collectConstructeurs(record.constructeurs)
+    }
+  }
+
+  const collectFromLabel = (value: unknown): void => {
+    if (typeof value !== 'string') return
+    value.split(/[,;\\/•·|]+/).map(part => part.trim()).filter(Boolean).forEach(pushName)
+  }
+
+  collectConstructeurs(entity?.constructeurs)
+  collectConstructeurs(entity?.constructeur)
+  collectFromLabel(entity?.constructeursLabel)
+  collectFromLabel(entity?.supplierLabel)
+  collectFromLabel(entity?.suppliers)
+
+  if (nestedKey && entity?.[nestedKey]) {
+    const nested = entity[nestedKey]
+    collectConstructeurs(nested?.constructeurs)
+    collectConstructeurs(nested?.constructeur)
+    collectFromLabel(nested?.constructeursLabel)
+    collectFromLabel(nested?.supplierLabel)
+  }
+
+  return names
+}
+
+const MAX_VISIBLE_SUPPLIERS = 3
+
+export const buildSuppliersDisplay = (suppliers: string[]) => {
+  const visible = suppliers.slice(0, MAX_VISIBLE_SUPPLIERS)
+  const overflow = Math.max(suppliers.length - visible.length, 0)
+  return { suppliers, visible, overflow, tooltip: suppliers.length ? suppliers.join(', ') : '' }
+}
diff --git a/app/utils/date.ts b/app/utils/date.ts
index 27c6d24..756dfee 100644
--- a/app/utils/date.ts
+++ b/app/utils/date.ts
@@ -2,6 +2,12 @@
  * Formatte une date en respectant les conventions françaises (jj/mm/aaaa).
  * Retourne "—" si la valeur est invalide ou absente.
  */
+const frenchDateFormatter = new Intl.DateTimeFormat('fr-FR', {
+  day: '2-digit',
+  month: '2-digit',
+  year: 'numeric',
+})
+
 export const formatFrenchDate = (value: Date | string | number | null | undefined): string => {
   if (value === null || value === undefined || value === '') {
     return '—'
@@ -12,9 +18,5 @@ export const formatFrenchDate = (value: Date | string | number | null | undefine
     return '—'
   }
 
-  return new Intl.DateTimeFormat('fr-FR', {
-    day: '2-digit',
-    month: '2-digit',
-    year: 'numeric',
-  }).format(date)
+  return frenchDateFormatter.format(date)
 }