feat(front) : page Ajouter un fournisseur (/suppliers/new) + workflow par onglets (ERP-94) (#83)

ERP-94 (etape front 7/7 du M2). **Stack sur #97** (base = `feature/ERP-97-suppliers-i18n-sidebar`, elle-meme sur #93) pour un diff isole. A recibler sur `develop` une fois #93 (MR #81) et #97 (MR #82) mergees.

Page « Ajouter un fournisseur » — **replique a l'identique le fonctionnement de l'ecran Client** (workflow inline par onglets, blocs reutilisables, validation 422 inline ERP-101), avec les specificites M2.

## Architecture (miroir Client)
- Workflow par onglets **inline dans `suppliers/new.vue`** (comme `clients/new.vue` — il n'existe pas de `useClientForm` monolithique). Helpers paralleles : `useSupplierReferentials`, `useSupplierFormErrors`, `supplierFormRules`, `supplierEdit` (payloads), `types/supplierForm`.
- Blocs `SupplierContactBlock` / `SupplierAddressBlock` (miroir des blocs Client).
- POST `/suppliers` puis PATCH partiels par onglet (mode strict, groupes de serialisation). Sous-ressources : `/suppliers/{id}/contacts|addresses|ribs`.
- Validation ERP-101 : 422 `violations[].propertyPath` mappees inline par champ (`useFormErrors` / `mapViolationsToRecord`), `{ toast: false }`, bouton Valider toujours actif.

## Specificites M2 (vs M1)
- Formulaire principal **sans contact inline** (ERP-106) : Entreprise + Categorie (type FOURNISSEUR, `?typeCode=FOURNISSEUR`).
- Adresse : **radio exclusif** Prospect/Depart/Rendu (`addressType` enum, RG-2.09), champs **Bennes** (stepper) + **Prestation de triage**, **pas d'email de facturation**.
- Information : champ **Volume previsionnel** (8e champ).
- Compta (Admin+Compta) : banque si VIREMENT (RG-2.07), RIB si LCR (RG-2.08) ; RIB sous-ressource gardee par `accounting.manage`.

## Tests (mirroir strategie Client)
- `make nuxt-test` : 338 passed (specs ajoutees : supplierFormRules, supplierEdit, useSupplierReferentials, SupplierContactBlock, SupplierAddressBlock).
- ESLint propre ; `nuxi typecheck` (lance en container) : **0 erreur**.
- Golden path navigateur valide end-to-end : POST /suppliers OK, companyName normalise UPPERCASE (RG-2.12), gating des onglets (Information actif, Contacts deverrouille).

## Note de revue
~30 `WARN Duplicated imports` au typecheck : les helpers Supplier exportent les memes noms generiques que leurs equivalents Client (`buildMainPayload`, `omitEmptyRequired`, `RefOption`...), tous deux auto-importes par Nuxt. **Sans impact runtime** : tous les consommateurs utilisent des imports explicites (qui priment). Consequence directe du miroir 1:1 ; une factorisation des generiques dans `shared/` pourrait etre un suivi.

Reviewed-on: #83
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

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

@@ -0,0 +1,864 @@
+<template>
+    <div>
+        <!-- En-tete : retour vers le repertoire + titre. -->
+        <div class="flex items-center gap-3 pt-11">
+            <MalioButtonIcon
+                icon="mdi:arrow-left-bold"
+                icon-size="24"
+                variant="ghost"
+                v-bind="{ ariaLabel: t('commercial.suppliers.form.back') }"
+                @click="goBack"
+            />
+            <h1 class="text-[30px] font-semibold text-m-primary">{{ t('commercial.suppliers.form.title') }}</h1>
+        </div>
+
+        <!-- ── Formulaire principal (pre-onglets) ─────────────────────────────
+             Sans validation de ce bloc, les onglets restent inaccessibles. Au
+             succes du POST, les champs passent en lecture seule et on bascule
+             automatiquement sur l'onglet Information. Pas de contact inline (ERP-106). -->
+        <div class="mt-[48px] grid grid-cols-3 xl:grid-cols-4 gap-x-[44px] gap-y-4">
+            <MalioInputText
+                v-model="main.companyName"
+                :label="t('commercial.suppliers.form.main.companyName')"
+                :required="true"
+                :readonly="mainLocked"
+                :error="mainErrors.errors.companyName"
+            />
+            <MalioSelectCheckbox
+                :model-value="main.categoryIris"
+                :options="referentials.categories.value"
+                :label="t('commercial.suppliers.form.main.categories')"
+                :display-tag="true"
+                :readonly="mainLocked"
+                :required="true"
+                :error="mainErrors.errors.categories"
+                @update:model-value="(v: (string | number)[]) => main.categoryIris = v.map(String)"
+            />
+        </div>
+
+        <div v-if="!mainLocked" class="mt-12 flex justify-center">
+            <MalioButton
+                variant="primary"
+                :label="t('commercial.suppliers.form.submit')"
+                :disabled="mainSubmitting"
+                @click="submitMain"
+            />
+        </div>
+
+        <!-- ── Onglets a validation incrementale ─────────────────────────────-->
+        <MalioTabList v-model="activeTab" :tabs="tabs" class="mt-[60px]">
+            <!-- Onglet Information -->
+            <template #information>
+                <div class="mt-12 grid grid-cols-4 gap-x-[44px] gap-y-4 bg-white py-4 pl-[28px] pr-[60px] shadow-[0_4px_4px_0_rgba(0,0,0,0.25)]">
+                    <MalioInputTextArea
+                        v-model="information.description"
+                        :label="t('commercial.suppliers.form.information.description')"
+                        resize="none"
+                        group-class="row-span-2 pt-1 pb-1"
+                        text-input="h-full text-lg"
+                        :readonly="isValidated('information')"
+                        :error="informationErrors.errors.description"
+                    />
+                    <MalioInputText
+                        v-model="information.competitors"
+                        :label="t('commercial.suppliers.form.information.competitors')"
+                        :readonly="isValidated('information')"
+                        :error="informationErrors.errors.competitors"
+                    />
+                    <MalioDate
+                        v-model="information.foundedAt"
+                        :label="t('commercial.suppliers.form.information.foundedAt')"
+                        :readonly="isValidated('information')"
+                        :editable="true"
+                        :error="informationErrors.errors.foundedAt"
+                    />
+                    <MalioInputText
+                        v-model="information.employeesCount"
+                        :label="t('commercial.suppliers.form.information.employeesCount')"
+                        :mask="EMPLOYEES_MASK"
+                        :readonly="isValidated('information')"
+                        :error="informationErrors.errors.employeesCount"
+                    />
+                    <MalioInputAmount
+                        v-model="information.revenueAmount"
+                        :label="t('commercial.suppliers.form.information.revenueAmount')"
+                        :readonly="isValidated('information')"
+                        :error="informationErrors.errors.revenueAmount"
+                    />
+                    <MalioInputText
+                        v-model="information.directorName"
+                        :label="t('commercial.suppliers.form.information.directorName')"
+                        :readonly="isValidated('information')"
+                        :error="informationErrors.errors.directorName"
+                    />
+                    <MalioInputAmount
+                        v-model="information.profitAmount"
+                        :label="t('commercial.suppliers.form.information.profitAmount')"
+                        :readonly="isValidated('information')"
+                        :error="informationErrors.errors.profitAmount"
+                    />
+                    <!-- Volume previsionnel : specifique fournisseur. Champ texte
+                         masque (chiffres uniquement) ; l'entier est resolu au PATCH. -->
+                    <MalioInputText
+                        v-model="information.volumeForecast"
+                        :label="t('commercial.suppliers.form.information.volumeForecast')"
+                        :mask="VOLUME_FORECAST_MASK"
+                        :readonly="isValidated('information')"
+                        :error="informationErrors.errors.volumeForecast"
+                    />
+                </div>
+                <div v-if="!isValidated('information')" class="mt-12 flex justify-center">
+                    <MalioButton
+                        variant="primary"
+                        :label="t('commercial.suppliers.form.submit')"
+                        :disabled="tabSubmitting || supplierId === null"
+                        @click="submitInformation"
+                    />
+                </div>
+            </template>
+
+            <!-- Onglet Contacts -->
+            <template #contacts>
+                <div class="mt-12 flex flex-col gap-6">
+                    <SupplierContactBlock
+                        v-for="(contact, index) in contacts"
+                        :key="index"
+                        :model-value="contact"
+                        :title="t('commercial.suppliers.form.contact.title', { n: index + 1 })"
+                        :removable="index > 0"
+                        :readonly="isValidated('contacts')"
+                        :errors="contactErrors[index]"
+                        @update:model-value="(v) => contacts[index] = v"
+                        @remove="askRemoveContact(index)"
+                    />
+                    <div v-if="!isValidated('contacts')" class="flex justify-center gap-6">
+                        <MalioButton
+                            variant="secondary"
+                            icon-name="mdi:add-bold"
+                            icon-position="left"
+                            :label="t('commercial.suppliers.form.contact.add')"
+                            :disabled="!canAddContact"
+                            @click="addContact"
+                        />
+                        <MalioButton
+                            variant="primary"
+                            :label="t('commercial.suppliers.form.submit')"
+                            :disabled="tabSubmitting"
+                            @click="submitContacts"
+                        />
+                    </div>
+                </div>
+            </template>
+
+            <!-- Onglet Adresses -->
+            <template #addresses>
+                <div class="mt-12 flex flex-col gap-6">
+                    <SupplierAddressBlock
+                        v-for="(address, index) in addresses"
+                        :key="index"
+                        :model-value="address"
+                        :title="t('commercial.suppliers.form.address.title', { n: index + 1 })"
+                        :category-options="referentials.categories.value"
+                        :site-options="referentials.sites.value"
+                        :contact-options="contactOptions"
+                        :country-options="countryOptions"
+                        :removable="index > 0"
+                        :readonly="isValidated('addresses')"
+                        :errors="addressErrors[index]"
+                        @update:model-value="(v) => addresses[index] = v"
+                        @remove="askRemoveAddress(index)"
+                        @degraded="onAddressDegraded"
+                    />
+                    <div v-if="!isValidated('addresses')" class="flex justify-center gap-6">
+                        <MalioButton
+                            variant="secondary"
+                            icon-name="mdi:add-bold"
+                            icon-position="left"
+                            :label="t('commercial.suppliers.form.address.add')"
+                            :disabled="!canAddAddress"
+                            @click="addAddress"
+                        />
+                        <MalioButton
+                            variant="primary"
+                            :label="t('commercial.suppliers.form.submit')"
+                            :disabled="tabSubmitting"
+                            @click="submitAddresses"
+                        />
+                    </div>
+                </div>
+            </template>
+
+            <!-- Onglet Comptabilite (present uniquement si accounting.view) -->
+            <template v-if="canAccountingView" #accounting>
+                <div class="mt-12 flex flex-col gap-6">
+                    <div class="bg-white py-4 pl-[28px] pr-[60px] shadow-[0_4px_4px_0_rgba(0,0,0,0.25)]">
+                        <div class="grid grid-cols-4 gap-x-[44px] gap-y-4">
+                            <MalioInputText
+                                v-model="accounting.siren"
+                                :label="t('commercial.suppliers.form.accounting.siren')"
+                                :mask="SIREN_MASK"
+                                :readonly="accountingReadonly"
+                                :required="true"
+                                :error="accountingErrors.errors.siren"
+                            />
+                            <MalioInputText
+                                v-model="accounting.accountNumber"
+                                :label="t('commercial.suppliers.form.accounting.accountNumber')"
+                                :readonly="accountingReadonly"
+                                :required="true"
+                                :error="accountingErrors.errors.accountNumber"
+                            />
+                            <MalioSelect
+                                :model-value="accounting.tvaModeIri"
+                                :options="referentials.tvaModes.value"
+                                :label="t('commercial.suppliers.form.accounting.tvaMode')"
+                                :readonly="accountingReadonly"
+                                empty-option-label=""
+                                :required="true"
+                                :error="accountingErrors.errors.tvaMode"
+                                @update:model-value="(v: string | number | null) => accounting.tvaModeIri = v === null ? null : String(v)"
+                            />
+                            <MalioInputText
+                                v-model="accounting.nTva"
+                                :label="t('commercial.suppliers.form.accounting.nTva')"
+                                :readonly="accountingReadonly"
+                                :required="true"
+                                :error="accountingErrors.errors.nTva"
+                            />
+                            <MalioSelect
+                                :model-value="accounting.paymentDelayIri"
+                                :options="referentials.paymentDelays.value"
+                                :label="t('commercial.suppliers.form.accounting.paymentDelay')"
+                                :readonly="accountingReadonly"
+                                empty-option-label=""
+                                :required="true"
+                                :error="accountingErrors.errors.paymentDelay"
+                                @update:model-value="(v: string | number | null) => accounting.paymentDelayIri = v === null ? null : String(v)"
+                            />
+                            <MalioSelect
+                                :model-value="accounting.paymentTypeIri"
+                                :options="referentials.paymentTypes.value"
+                                :label="t('commercial.suppliers.form.accounting.paymentType')"
+                                :readonly="accountingReadonly"
+                                empty-option-label=""
+                                :required="true"
+                                :error="accountingErrors.errors.paymentType"
+                                @update:model-value="onPaymentTypeChange"
+                            />
+                            <MalioSelect
+                                v-if="isBankRequired"
+                                :model-value="accounting.bankIri"
+                                :options="referentials.banks.value"
+                                :label="t('commercial.suppliers.form.accounting.bank')"
+                                :readonly="accountingReadonly"
+                                empty-option-label=""
+                                :required="true"
+                                :error="accountingErrors.errors.bank"
+                                @update:model-value="(v: string | number | null) => accounting.bankIri = v === null ? null : String(v)"
+                            />
+                        </div>
+                    </div>
+
+                    <!-- Blocs RIB — affiches uniquement si type de reglement = LCR (RG-2.08). -->
+                    <div
+                        v-for="(rib, index) in visibleRibs"
+                        :key="index"
+                        class="relative bg-white py-4 pl-[28px] pr-[60px] shadow-[0_4px_4px_0_rgba(0,0,0,0.25)]"
+                    >
+                        <MalioButtonIcon
+                            v-if="!accountingReadonly"
+                            icon="mdi:delete-outline"
+                            variant="ghost"
+                            button-class="absolute top-3 right-3"
+                            v-bind="{ ariaLabel: t('commercial.suppliers.form.accounting.removeRib') }"
+                            @click="askRemoveRib(index)"
+                        />
+                        <div class="grid grid-cols-4 gap-x-[44px] gap-y-4">
+                            <MalioInputText
+                                v-model="rib.label"
+                                :label="t('commercial.suppliers.form.accounting.ribLabel')"
+                                :readonly="accountingReadonly"
+                                :required="isRibRequired"
+                                :error="ribErrors[index]?.label"
+                            />
+                            <MalioInputText
+                                v-model="rib.bic"
+                                :label="t('commercial.suppliers.form.accounting.ribBic')"
+                                :readonly="accountingReadonly"
+                                :required="isRibRequired"
+                                :error="ribErrors[index]?.bic"
+                            />
+                            <MalioInputText
+                                v-model="rib.iban"
+                                :label="t('commercial.suppliers.form.accounting.ribIban')"
+                                :readonly="accountingReadonly"
+                                :required="isRibRequired"
+                                :error="ribErrors[index]?.iban"
+                            />
+                        </div>
+                    </div>
+
+                    <div v-if="!accountingReadonly" class="flex justify-center gap-6">
+                        <MalioButton
+                            v-if="isRibRequired"
+                            variant="secondary"
+                            icon-name="mdi:add-bold"
+                            icon-position="left"
+                            :label="t('commercial.suppliers.form.accounting.addRib')"
+                            :disabled="!canAddRib"
+                            @click="addRib"
+                        />
+                        <MalioButton
+                            variant="primary"
+                            :label="t('commercial.suppliers.form.submit')"
+                            :disabled="tabSubmitting"
+                            @click="submitAccounting"
+                        />
+                    </div>
+                </div>
+            </template>
+
+            <!-- Onglet placeholder : frame vide, passage automatique. -->
+            <template #transport><ComingSoonPlaceholder /></template>
+        </MalioTabList>
+
+        <!-- Modal de confirmation generique (suppression contact/adresse/RIB). -->
+        <MalioModal v-model="confirmModal.open" modal-class="max-w-md">
+            <template #header>
+                <h2 class="text-[24px] font-bold">{{ t('commercial.suppliers.form.confirmDelete.title') }}</h2>
+            </template>
+            <p>{{ confirmModal.message }}</p>
+            <template #footer>
+                <MalioButton
+                    variant="secondary"
+                    button-class="flex-1"
+                    :label="t('commercial.suppliers.form.confirmDelete.cancel')"
+                    @click="confirmModal.open = false"
+                />
+                <MalioButton
+                    variant="danger"
+                    button-class="flex-1"
+                    :label="t('commercial.suppliers.form.confirmDelete.confirm')"
+                    @click="runConfirm"
+                />
+            </template>
+        </MalioModal>
+    </div>
+</template>
+
+<script setup lang="ts">
+import { computed, onMounted, reactive, ref, watch } from 'vue'
+import { useSupplierReferentials, type RefOption } from '~/modules/commercial/composables/useSupplierReferentials'
+import { useSupplierFormErrors } from '~/modules/commercial/composables/useSupplierFormErrors'
+import {
+    buildSupplierFormTabKeys,
+    SUPPLIER_FORM_PLACEHOLDER_TABS,
+    isAddressValid,
+    isBankRequiredForPaymentType,
+    isContactBlank,
+    isContactNamed,
+    isRibBlank,
+    isRibComplete,
+    isRibRequiredForPaymentType,
+    lastFillableTabKey,
+} from '~/modules/commercial/utils/supplierFormRules'
+import {
+    buildAccountingPayload,
+    buildAddressPayload,
+    buildContactPayload,
+    buildInformationPayload,
+    buildMainPayload,
+    buildRibPayload,
+} from '~/modules/commercial/utils/supplierEdit'
+import {
+    emptyAddress,
+    emptyContact,
+    emptyRib,
+    type SupplierAddressFormDraft,
+    type SupplierContactFormDraft,
+    type SupplierRibFormDraft,
+} from '~/modules/commercial/types/supplierForm'
+import { extractApiErrorMessage } from '~/shared/utils/api'
+
+// Masques de saisie (la normalisation finale reste serveur).
+const SIREN_MASK = '#########'
+const EMPLOYEES_MASK = '#######'
+// Volume previsionnel : champ texte borne aux chiffres (entier >= 0 cote back).
+const VOLUME_FORECAST_MASK = '##########'
+
+const { t } = useI18n()
+const api = useApi()
+const toast = useToast()
+const router = useRouter()
+const { can } = usePermissions()
+
+/** Retour vers le repertoire fournisseurs (fleche d'en-tete). */
+function goBack(): void {
+    router.push('/suppliers')
+}
+
+/**
+ * Message d'erreur a afficher dans un toast a partir d'une erreur d'API. Retourne
+ * TOUJOURS une chaine (le composant de toast plante sur `undefined`).
+ */
+function apiErrorMessage(error: unknown): string {
+    const data = (error as { data?: unknown })?.data
+    return extractApiErrorMessage(data) || t('commercial.suppliers.toast.error')
+}
+
+// ── Erreurs de validation par champ (ERP-101) ───────────────────────────────
+const {
+    mainErrors,
+    informationErrors,
+    accountingErrors,
+    contactErrors,
+    addressErrors,
+    ribErrors,
+    submitRows,
+} = useSupplierFormErrors()
+
+useHead({ title: t('commercial.suppliers.form.title') })
+
+// Gating de la route : la creation est reservee a `manage`. Compta (accounting
+// seul) et Usine sont rediriges vers le repertoire.
+if (!can('commercial.suppliers.manage')) {
+    await navigateTo('/suppliers')
+}
+
+const canAccountingView = computed(() => can('commercial.suppliers.accounting.view'))
+const canAccountingManage = computed(() => can('commercial.suppliers.accounting.manage'))
+
+const referentials = useSupplierReferentials()
+
+// ── Etat du fournisseur cree ────────────────────────────────────────────────
+const supplierId = ref<number | null>(null)
+const mainLocked = ref(false)
+const mainSubmitting = ref(false)
+const tabSubmitting = ref(false)
+
+// ── Formulaire principal ────────────────────────────────────────────────────
+const main = reactive({
+    companyName: null as string | null,
+    categoryIris: [] as string[],
+})
+
+/** POST /suppliers (groupe supplier:write:main). Au succes : verrouille + bascule Information. */
+async function submitMain(): Promise<void> {
+    if (mainSubmitting.value) return
+    mainSubmitting.value = true
+    mainErrors.clearErrors()
+    try {
+        const created = await api.post<SupplierResponse>('/suppliers', buildMainPayload(main), {
+            headers: { Accept: 'application/ld+json' },
+            toast: false,
+        })
+
+        supplierId.value = created.id
+        // Reaffiche la valeur normalisee renvoyee par le serveur (UPPERCASE, RG-2.12).
+        main.companyName = created.companyName ?? main.companyName
+
+        mainLocked.value = true
+        // Information est facultatif : on deverrouille jusqu'a Contacts (index 1).
+        unlockedIndex.value = tabIndex('contacts')
+        activeTab.value = 'information'
+        toast.success({ title: t('commercial.suppliers.toast.createSuccess') })
+    }
+    catch (error) {
+        // 409 = doublon nom de societe (RG d'unicite) → erreur inline + toast ;
+        // 422 → mapping inline par champ ; autre → toast de fallback (ERP-101).
+        const status = (error as { response?: { status?: number } })?.response?.status
+        if (status === 409) {
+            const message = t('commercial.suppliers.form.duplicateCompany')
+            mainErrors.setError('companyName', message)
+            toast.error({ title: t('commercial.suppliers.toast.error'), message })
+        }
+        else {
+            mainErrors.handleApiError(error, { fallbackMessage: t('commercial.suppliers.toast.error') })
+        }
+    }
+    finally {
+        mainSubmitting.value = false
+    }
+}
+
+// ── Onglets : ordre + gating progressif ─────────────────────────────────────
+const activeTab = ref('information')
+// Index du dernier onglet deverrouille (-1 tant que le fournisseur n'est pas cree).
+const unlockedIndex = ref(-1)
+// Onglets valides (passent en lecture seule).
+const validated = reactive<Record<string, boolean>>({})
+
+const tabKeys = computed(() => buildSupplierFormTabKeys(canAccountingView.value))
+
+// Dernier onglet REMPLISSABLE par le role : sa validation cloture l'ajout.
+const lastFillableTab = computed(() => lastFillableTabKey(tabKeys.value))
+
+// Icone (Iconify) affichee dans l'onglet, par cle.
+const TAB_ICONS: Record<string, string> = {
+    information: 'mdi:account-outline',
+    contacts: 'mdi:account-box-plus-outline',
+    addresses: 'mdi:map-marker-outline',
+    transport: 'mdi:truck-delivery-outline',
+    accounting: 'mdi:bank-circle-outline',
+}
+
+const tabs = computed(() => tabKeys.value.map((key, index) => ({
+    key,
+    label: t(`commercial.suppliers.tab.${key}`),
+    icon: TAB_ICONS[key],
+    disabled: index > unlockedIndex.value,
+})))
+
+function isValidated(key: string): boolean {
+    return validated[key] === true
+}
+
+function tabIndex(key: string): number {
+    return tabKeys.value.indexOf(key)
+}
+
+/**
+ * Marque l'onglet valide. Si c'est le dernier onglet remplissable, l'ajout est
+ * termine : toast final + redirection vers la liste, et on retourne true. Sinon,
+ * deverrouille et avance a l'onglet suivant, et retourne false.
+ */
+function completeTab(key: string): boolean {
+    validated[key] = true
+    if (key === lastFillableTab.value) {
+        toast.success({ title: t('commercial.suppliers.toast.addComplete') })
+        router.push('/suppliers')
+        return true
+    }
+    const next = tabKeys.value[tabIndex(key) + 1]
+    unlockedIndex.value = Math.max(unlockedIndex.value, tabIndex(key) + 1)
+    if (next) activeTab.value = next
+    return false
+}
+
+// Passage automatique sur les onglets coquille (Transport).
+watch(activeTab, (key) => {
+    if ((SUPPLIER_FORM_PLACEHOLDER_TABS as readonly string[]).includes(key)) {
+        const next = tabKeys.value[tabIndex(key) + 1]
+        unlockedIndex.value = Math.max(unlockedIndex.value, tabIndex(key) + 1)
+        if (next) activeTab.value = next
+    }
+})
+
+// ── Onglet Information ──────────────────────────────────────────────────────
+const information = reactive({
+    description: null as string | null,
+    competitors: null as string | null,
+    foundedAt: null as string | null,
+    employeesCount: null as string | null,
+    revenueAmount: null as string | null,
+    profitAmount: null as string | null,
+    directorName: null as string | null,
+    volumeForecast: null as string | null,
+})
+
+/** PATCH /suppliers/{id} — mode strict : uniquement les champs du groupe information. */
+async function submitInformation(): Promise<void> {
+    if (supplierId.value === null || tabSubmitting.value) return
+    tabSubmitting.value = true
+    informationErrors.clearErrors()
+    try {
+        await api.patch(`/suppliers/${supplierId.value}`, buildInformationPayload(information), { toast: false })
+        if (completeTab('information')) return
+        toast.success({ title: t('commercial.suppliers.toast.updateSuccess') })
+    }
+    catch (error) {
+        informationErrors.handleApiError(error, { fallbackMessage: t('commercial.suppliers.toast.error') })
+    }
+    finally {
+        tabSubmitting.value = false
+    }
+}
+
+// ── Onglet Contacts ─────────────────────────────────────────────────────────
+const contacts = ref<SupplierContactFormDraft[]>([emptyContact()])
+
+// « + Nouveau contact » desactive tant que le dernier bloc n'a ni nom ni prenom.
+const canAddContact = computed(() => {
+    const last = contacts.value[contacts.value.length - 1]
+    return last !== undefined && isContactNamed(last)
+})
+
+function addContact(): void {
+    if (canAddContact.value) contacts.value.push(emptyContact())
+}
+
+function askRemoveContact(index: number): void {
+    askConfirm(t('commercial.suppliers.form.confirmDelete.contact'), () => {
+        contacts.value.splice(index, 1)
+        contactErrors.value.splice(index, 1)
+    })
+}
+
+/** POST/PATCH des contacts sur la sous-ressource /suppliers/{id}/contacts. */
+async function submitContacts(): Promise<void> {
+    if (supplierId.value === null || tabSubmitting.value) return
+    tabSubmitting.value = true
+    try {
+        // RG-2.13 : au moins un contact requis. Si l'onglet ne contient QUE des
+        // amorces vides, on les soumet pour declencher la 422 RG-2.04 inline.
+        const hasSubmittableContact = contacts.value.some(c => c.id !== null || !isContactBlank(c))
+        const hasError = await submitRows(
+            contacts.value,
+            contactErrors,
+            async (contact) => {
+                const body = buildContactPayload(contact)
+                if (contact.id === null) {
+                    const created = await api.post<ContactResponse>(
+                        `/suppliers/${supplierId.value}/contacts`,
+                        body,
+                        { headers: { Accept: 'application/ld+json' }, toast: false },
+                    )
+                    contact.id = created.id
+                    contact.iri = created['@id'] ?? null
+                }
+                else {
+                    await api.patch(`/supplier_contacts/${contact.id}`, body, { toast: false })
+                }
+            },
+            error => toast.error({ title: t('commercial.suppliers.toast.error'), message: apiErrorMessage(error) }),
+            contact => hasSubmittableContact && contact.id === null && isContactBlank(contact),
+        )
+        if (hasError) return
+        if (completeTab('contacts')) return
+        toast.success({ title: t('commercial.suppliers.toast.updateSuccess') })
+    }
+    finally {
+        tabSubmitting.value = false
+    }
+}
+
+// ── Onglet Adresses ─────────────────────────────────────────────────────────
+const addresses = ref<SupplierAddressFormDraft[]>([emptyAddress()])
+const addressDegradedNotified = ref(false)
+
+// Contacts deja crees, rattachables a une adresse (M2M, via leur IRI).
+const contactOptions = computed<RefOption[]>(() =>
+    contacts.value
+        .filter(c => c.iri !== null)
+        .map(c => ({
+            value: c.iri as string,
+            label: [c.firstName, c.lastName].filter(Boolean).join(' ') || (c.email ?? ''),
+        })),
+)
+
+// Pays disponibles (France preselectionnee par defaut sur chaque adresse).
+const countryOptions: RefOption[] = [
+    { value: 'France', label: 'France' },
+    { value: 'Espagne', label: 'Espagne' },
+]
+
+// « + Adresse » desactive tant que la derniere adresse n'est pas valide.
+const canAddAddress = computed(() => {
+    const last = addresses.value[addresses.value.length - 1]
+    return last !== undefined && isAddressValid(last)
+})
+
+function addAddress(): void {
+    if (canAddAddress.value) addresses.value.push(emptyAddress())
+}
+
+function askRemoveAddress(index: number): void {
+    askConfirm(t('commercial.suppliers.form.confirmDelete.address'), () => {
+        addresses.value.splice(index, 1)
+        addressErrors.value.splice(index, 1)
+    })
+}
+
+/** Avertit une seule fois quand l'autocompletion d'adresse bascule en degrade. */
+function onAddressDegraded(): void {
+    if (addressDegradedNotified.value) return
+    addressDegradedNotified.value = true
+    toast.warning({
+        title: t('commercial.suppliers.toast.error'),
+        message: t('commercial.suppliers.form.address.degraded'),
+    })
+}
+
+/** POST/PATCH des adresses sur la sous-ressource /suppliers/{id}/addresses. */
+async function submitAddresses(): Promise<void> {
+    if (supplierId.value === null || tabSubmitting.value) return
+    tabSubmitting.value = true
+    try {
+        const hasError = await submitRows(
+            addresses.value,
+            addressErrors,
+            async (address) => {
+                const body = buildAddressPayload(address)
+                if (address.id === null) {
+                    const created = await api.post<{ id: number }>(
+                        `/suppliers/${supplierId.value}/addresses`,
+                        body,
+                        { headers: { Accept: 'application/ld+json' }, toast: false },
+                    )
+                    address.id = created.id
+                }
+                else {
+                    await api.patch(`/supplier_addresses/${address.id}`, body, { toast: false })
+                }
+            },
+            error => toast.error({ title: t('commercial.suppliers.toast.error'), message: apiErrorMessage(error) }),
+        )
+        if (hasError) return
+        if (completeTab('addresses')) return
+        toast.success({ title: t('commercial.suppliers.toast.updateSuccess') })
+    }
+    finally {
+        tabSubmitting.value = false
+    }
+}
+
+// ── Onglet Comptabilite ─────────────────────────────────────────────────────
+const accounting = reactive({
+    siren: null as string | null,
+    accountNumber: null as string | null,
+    tvaModeIri: null as string | null,
+    nTva: null as string | null,
+    paymentDelayIri: null as string | null,
+    paymentTypeIri: null as string | null,
+    bankIri: null as string | null,
+})
+const ribs = ref<SupplierRibFormDraft[]>([])
+
+// L'onglet est editable seulement avec accounting.manage (sinon lecture seule).
+const accountingReadonly = computed(() => isValidated('accounting') || !canAccountingManage.value)
+
+// Code du type de reglement selectionne (pour RG-2.07 / RG-2.08).
+const selectedPaymentTypeCode = computed(() =>
+    referentials.paymentTypes.value.find(p => p.value === accounting.paymentTypeIri)?.code ?? null,
+)
+const isBankRequired = computed(() => isBankRequiredForPaymentType(selectedPaymentTypeCode.value))
+const isRibRequired = computed(() => isRibRequiredForPaymentType(selectedPaymentTypeCode.value))
+
+// Les blocs RIB ne sont affiches que pour une LCR (RG-2.08).
+const visibleRibs = computed(() => isRibRequired.value ? ribs.value : [])
+
+function onPaymentTypeChange(value: string | number | null): void {
+    accounting.paymentTypeIri = value === null ? null : String(value)
+    // La banque n'a de sens que pour un virement : on la vide sinon (RG-2.07).
+    if (!isBankRequired.value) accounting.bankIri = null
+    // Les RIB n'ont de sens que pour une LCR (RG-2.08) : amorce un bloc vide quand
+    // LCR est choisi, vide la liste sinon (pas de RIB fantome soumis).
+    if (isRibRequired.value) {
+        if (ribs.value.length === 0) ribs.value.push(emptyRib())
+    }
+    else {
+        ribs.value = []
+        ribErrors.value = []
+    }
+}
+
+// « + RIB » desactive tant que le dernier bloc RIB n'est pas complet.
+const canAddRib = computed(() => {
+    const last = ribs.value[ribs.value.length - 1]
+    return last !== undefined && isRibComplete(last)
+})
+
+function addRib(): void {
+    if (canAddRib.value) ribs.value.push(emptyRib())
+}
+
+function askRemoveRib(index: number): void {
+    askConfirm(t('commercial.suppliers.form.confirmDelete.rib'), () => {
+        ribs.value.splice(index, 1)
+        ribErrors.value.splice(index, 1)
+        // Garde au moins un bloc RIB visible.
+        if (ribs.value.length === 0) ribs.value.push(emptyRib())
+    })
+}
+
+/**
+ * Valide l'onglet Comptabilite : POST/PATCH des RIB sur /suppliers/{id}/ribs PUIS
+ * PATCH des scalaires (groupe supplier:write:accounting). Les RIB d'abord : le back
+ * valide RG-2.08 (LCR => au moins un RIB persiste) sur le PATCH scalaires, les RIB
+ * doivent donc exister en base AVANT. Deux appels distincts (mode strict).
+ */
+async function submitAccounting(): Promise<void> {
+    if (supplierId.value === null || tabSubmitting.value) return
+    tabSubmitting.value = true
+    accountingErrors.clearErrors()
+    try {
+        // 1) POST/PATCH des RIB d'abord (erreurs inline par ligne). Seuls les blocs
+        // RIB TOTALEMENT vides (amorce neuve) sont ignores.
+        const ribHasError = await submitRows(
+            ribs.value,
+            ribErrors,
+            async (rib) => {
+                const body = buildRibPayload(rib)
+                if (rib.id === null) {
+                    const created = await api.post<{ id: number }>(
+                        `/suppliers/${supplierId.value}/ribs`,
+                        body,
+                        { headers: { Accept: 'application/ld+json' }, toast: false },
+                    )
+                    rib.id = created.id
+                }
+                else {
+                    await api.patch(`/supplier_ribs/${rib.id}`, body, { toast: false })
+                }
+            },
+            error => toast.error({ title: t('commercial.suppliers.toast.error'), message: apiErrorMessage(error) }),
+            rib => rib.id === null && isRibBlank(rib),
+        )
+        if (ribHasError) return
+
+        // 2) PATCH des scalaires comptables (erreurs inline sur leurs champs).
+        try {
+            await api.patch(
+                `/suppliers/${supplierId.value}`,
+                buildAccountingPayload(accounting, isBankRequired.value),
+                { toast: false },
+            )
+        }
+        catch (error) {
+            accountingErrors.handleApiError(error, { fallbackMessage: t('commercial.suppliers.toast.error') })
+            return
+        }
+
+        if (completeTab('accounting')) return
+        toast.success({ title: t('commercial.suppliers.toast.updateSuccess') })
+    }
+    finally {
+        tabSubmitting.value = false
+    }
+}
+
+// ── Modal de confirmation generique ─────────────────────────────────────────
+const confirmModal = reactive({
+    open: false,
+    message: '',
+    action: null as null | (() => void),
+})
+
+function askConfirm(message: string, action: () => void): void {
+    confirmModal.message = message
+    confirmModal.action = action
+    confirmModal.open = true
+}
+
+function runConfirm(): void {
+    confirmModal.action?.()
+    confirmModal.action = null
+    confirmModal.open = false
+}
+
+// ── Types de reponse API ────────────────────────────────────────────────────
+interface SupplierResponse {
+    id: number
+    companyName: string | null
+}
+
+interface ContactResponse {
+    '@id'?: string
+    id: number
+}
+
+onMounted(() => {
+    // Echec du chargement des referentiels non bloquant : les selects restent vides.
+    referentials.loadCommon().catch(() => {})
+})
+</script>