feat(commercial) : amélioration et validation stricte des champs date (ERP-148)

- MalioDate v1.7.10 : exposition de l'état de validité et de la saisie brute
  invalide (@update:valid / @update:rawValue).
- Validation back-autoritaire du format : foundedAt n'accepte plus que l'ISO
  strict Y-m-d (Context DateTimeNormalizer) + collectDenormalizationErrors sur
  Client et Supplier -> toute saisie non-ISO renvoie un 422 porté sur le champ.
- Front : la saisie invalide est transmise au back, le message technique de
  type-error est surchargé par une clé i18n via le code de violation
  (resolveViolationMessage / VIOLATION_MESSAGE_I18N), affiché inline.
- Réorganisation des utils de formulaire sous utils/forms/.
- Tests back (cas piège 12/25/2026) + tests front (résolveur i18n).

frontend/modules/commercial/pages/clients/[id]/edit.vue

@@ -116,6 +116,7 @@
                             :readonly="businessReadonly"
                             :editable="true"
                             :error="informationErrors.errors.foundedAt"
+                            @update:raw-value="(v: string) => information.foundedAtRaw = v"
                         />
                         <MalioInputText
                             v-model="information.employeesCount"
@@ -401,7 +402,7 @@ import {
     mapAddressToDraft,
     mapRibToDraft,
     type ClientDetail,
-} from '~/modules/commercial/utils/clientConsultation'
+} from '~/modules/commercial/utils/forms/clientConsultation'
 import {
     buildAccountingPayload,
     buildAddressPayload,
@@ -417,7 +418,7 @@ import {
     type ClientEditAbilities,
     type InformationFormDraft,
     type MainFormDraft,
-} from '~/modules/commercial/utils/clientEdit'
+} from '~/modules/commercial/utils/forms/clientEdit'
 import {
     buildClientFormTabKeys,
     isAddressValid,
@@ -429,7 +430,7 @@ import {
     isRibComplete,
     isRibRequiredForPaymentType,
     showsRelationAndTriageFields,
-} from '~/modules/commercial/utils/clientFormRules'
+} from '~/modules/commercial/utils/forms/clientFormRules'
 import {
     emptyAddress,
     emptyContact,

frontend/modules/commercial/pages/clients/[id]/index.vue

@@ -280,7 +280,7 @@
 <script setup lang="ts">
 import { computed, onMounted, ref } from 'vue'
 import { useClient } from '~/modules/commercial/composables/useClient'
-import { buildClientFormTabKeys, isRibRequiredForPaymentType } from '~/modules/commercial/utils/clientFormRules'
+import { buildClientFormTabKeys, isRibRequiredForPaymentType } from '~/modules/commercial/utils/forms/clientFormRules'
 import { readHistoryTab } from '~/shared/utils/historyTab'
 import {
     canEditClient,
@@ -297,7 +297,7 @@ import {
     showRestoreAction,
     type ClientDetail,
     type SelectOption,
-} from '~/modules/commercial/utils/clientConsultation'
+} from '~/modules/commercial/utils/forms/clientConsultation'
 import { emptyAddress, emptyContact } from '~/modules/commercial/types/clientForm'
 
 // Masque d'affichage (purement visuel, la donnee reste celle du serveur).

frontend/modules/commercial/pages/clients/new.vue

@@ -111,6 +111,7 @@
                         :readonly="isValidated('information')"
                         :editable="true"
                         :error="informationErrors.errors.foundedAt"
+                        @update:raw-value="(v: string) => information.foundedAtRaw = v"
                     />
                     <MalioInputText
                         v-model="information.employeesCount"
@@ -401,12 +402,12 @@ import {
     isRibRequiredForPaymentType,
     lastFillableTabKey,
     showsRelationAndTriageFields,
-} from '~/modules/commercial/utils/clientFormRules'
+} from '~/modules/commercial/utils/forms/clientFormRules'
 import {
     buildAddressPayload,
     buildMainPayload,
     buildRibPayload,
-} from '~/modules/commercial/utils/clientEdit'
+} from '~/modules/commercial/utils/forms/clientEdit'
 import {
     emptyAddress,
     emptyContact,
@@ -651,6 +652,8 @@ const information = reactive({
     description: null as string | null,
     competitors: null as string | null,
     foundedAt: null as string | null,
+    // Saisie brute invalide remontee par MalioDate (cf. foundedAtRaw, MUI-44).
+    foundedAtRaw: '',
     employeesCount: null as string | null,
     revenueAmount: null as string | null,
     profitAmount: null as string | null,
@@ -666,7 +669,8 @@ async function submitInformation(): Promise<void> {
         await api.patch(`/clients/${clientId.value}`, {
             description: information.description || null,
             competitors: information.competitors || null,
-            foundedAt: information.foundedAt || null,
+            // Saisie invalide prioritaire -> 422 back sur foundedAt (cf. foundedAtRaw).
+            foundedAt: information.foundedAtRaw || information.foundedAt || null,
             employeesCount: information.employeesCount ? Number(information.employeesCount) : null,
             revenueAmount: information.revenueAmount || null,
             profitAmount: information.profitAmount || null,

frontend/modules/commercial/pages/suppliers/[id]/edit.vue

@@ -77,6 +77,7 @@
                             :readonly="businessReadonly"
                             :editable="true"
                             :error="informationErrors.errors.foundedAt"
+                            @update:raw-value="(v: string) => information.foundedAtRaw = v"
                         />
                         <MalioInputText
                             v-model="information.employeesCount"
@@ -370,7 +371,7 @@ import {
     mapAddressToDraft,
     mapRibToDraft,
     type SupplierDetail,
-} from '~/modules/commercial/utils/supplierConsultation'
+} from '~/modules/commercial/utils/forms/supplierConsultation'
 import {
     buildAccountingPayload,
     buildAddressPayload,
@@ -386,7 +387,7 @@ import {
     type InformationFormDraft,
     type MainFormDraft,
     type SupplierEditAbilities,
-} from '~/modules/commercial/utils/supplierEdit'
+} from '~/modules/commercial/utils/forms/supplierEdit'
 import {
     buildSupplierFormTabKeys,
     isAddressValid,
@@ -396,7 +397,7 @@ import {
     isRibBlank,
     isRibComplete,
     isRibRequiredForPaymentType,
-} from '~/modules/commercial/utils/supplierFormRules'
+} from '~/modules/commercial/utils/forms/supplierFormRules'
 import {
     emptyAddress,
     emptyContact,

frontend/modules/commercial/pages/suppliers/[id]/index.vue

@@ -263,7 +263,7 @@
 <script setup lang="ts">
 import { computed, onMounted, ref } from 'vue'
 import { useSupplier } from '~/modules/commercial/composables/useSupplier'
-import { buildSupplierFormTabKeys, isRibRequiredForPaymentType } from '~/modules/commercial/utils/supplierFormRules'
+import { buildSupplierFormTabKeys, isRibRequiredForPaymentType } from '~/modules/commercial/utils/forms/supplierFormRules'
 import { readHistoryTab } from '~/shared/utils/historyTab'
 import {
     canEditSupplier,
@@ -280,7 +280,7 @@ import {
     showRestoreAction,
     type SelectOption,
     type SupplierDetail,
-} from '~/modules/commercial/utils/supplierConsultation'
+} from '~/modules/commercial/utils/forms/supplierConsultation'
 import { emptyContact } from '~/modules/commercial/types/supplierForm'
 
 // Masque d'affichage (purement visuel, la donnee reste celle du serveur).

frontend/modules/commercial/pages/suppliers/new.vue

@@ -71,6 +71,7 @@
                         :readonly="isValidated('information')"
                         :editable="true"
                         :error="informationErrors.errors.foundedAt"
+                        @update:raw-value="(v: string) => information.foundedAtRaw = v"
                     />
                     <MalioInputText
                         v-model="information.employeesCount"
@@ -361,7 +362,7 @@ import {
     isRibComplete,
     isRibRequiredForPaymentType,
     lastFillableTabKey,
-} from '~/modules/commercial/utils/supplierFormRules'
+} from '~/modules/commercial/utils/forms/supplierFormRules'
 import {
     buildAccountingPayload,
     buildAddressPayload,
@@ -369,7 +370,7 @@ import {
     buildInformationPayload,
     buildMainPayload,
     buildRibPayload,
-} from '~/modules/commercial/utils/supplierEdit'
+} from '~/modules/commercial/utils/forms/supplierEdit'
 import {
     emptyAddress,
     emptyContact,
@@ -549,6 +550,8 @@ const information = reactive({
     description: null as string | null,
     competitors: null as string | null,
     foundedAt: null as string | null,
+    // Saisie brute invalide remontee par MalioDate (cf. foundedAtRaw, MUI-44).
+    foundedAtRaw: '',
     employeesCount: null as string | null,
     revenueAmount: null as string | null,
     profitAmount: null as string | null,