fix(deploy) : seed RBAC system roles during deployment

deploy.sh only synced the permission catalog; the system roles (admin, user)
were never seeded, leaving the admin Roles page empty after a fresh deploy.
Add app:seed-rbac (idempotent) to the deploy script, refresh the embedded
script in deployment-docker.md, document the RBAC post-deploy step (with the
manual fix for an already-deployed prod), and note it in CLAUDE.md.

CLAUDE.md

@@ -126,6 +126,12 @@ La librairie `@malio/layer-ui` fournit les composants de formulaire et d'action.
 - Config Docker : `infra/dev/.env.docker` (override local : `infra/dev/.env.docker.local`)
 - Après modif nginx : `docker restart nginx-lesstime`
 
+## Déploiement (prod Docker)
+
+- Script : `infra/prod/deploy.sh` (`./deploy.sh [tag]`) — doc complète : `doc/deployment-docker.md`
+- Étapes : maintenance → pull image → up → migrations → **`app:seed-rbac`** → **`app:sync-permissions`** → cache clear/warmup
+- **RBAC** : les migrations créent les tables `role`/`permission` mais **n'insèrent aucune donnée**. Les rôles système (`admin`, `user`) viennent de `app:seed-rbac` (idempotent) et le catalogue des permissions de `app:sync-permissions` (à relancer à chaque ajout de permission). Symptôme si oubliées : page admin Rôles vide (« Aucun rôle trouvé »).
+
 ## Fixtures
 
 - User admin : `admin` / `admin` (ROLE_ADMIN)

doc/deployment-docker.md

@@ -128,6 +128,12 @@ sudo docker compose cp app:/var/www/html/public/maintenance.html public/maintena
 echo "==> Running migrations..."
 sudo docker compose exec -T -u www-data app php bin/console doctrine:migrations:migrate --no-interaction
 
+echo "==> Seeding RBAC system roles (idempotent)..."
+sudo docker compose exec -T -u www-data app php bin/console app:seed-rbac
+
+echo "==> Syncing RBAC permissions catalog..."
+sudo docker compose exec -T -u www-data app php bin/console app:sync-permissions
+
 echo "==> Clearing cache..."
 sudo docker compose exec -T -u www-data app php bin/console cache:clear --env=prod
 sudo docker compose exec -T -u www-data app php bin/console cache:warmup --env=prod
@@ -294,7 +300,31 @@ cd /var/www/lesstime
 ./deploy.sh v0.3.13   # deploie une version specifique
 ```
 
-C'est tout. Le script pull l'image, redemarre le conteneur, lance les migrations et vide le cache.
+C'est tout. Le script pull l'image, redemarre le conteneur, lance les migrations, seed les roles
+systeme RBAC, synchronise le catalogue des permissions et vide le cache.
+
+---
+
+## RBAC : roles & permissions (post-deploiement)
+
+Le module RBAC (entites `Role` / `Permission`) repose sur des donnees qui ne sont **pas**
+inserees par les migrations (celles-ci creent uniquement les tables). Deux commandes idempotentes
+les peuplent, integrees au `deploy.sh` :
+
+| Commande | Effet |
+|----------|-------|
+| `app:seed-rbac` | Cree les **roles systeme** `admin` (Administrateur) et `user` (Utilisateur). Idempotent : ne recree rien si deja present. |
+| `app:sync-permissions` | (Re)synchronise le **catalogue des permissions** a partir des modules actifs. A relancer a chaque ajout de permission dans le code. |
+
+Symptome si elles n'ont pas tourne : la page d'admin **Roles** affiche « Aucun role trouve ».
+
+Correctif manuel sur une prod deja deployee (sans relancer un deploiement complet) :
+
+```bash
+cd /var/www/lesstime
+sudo docker compose exec -T -u www-data app php bin/console app:seed-rbac
+sudo docker compose exec -T -u www-data app php bin/console app:sync-permissions
+```
 
 ---
 

frontend/modules/directory/components/CommercialReportTab.vue

@@ -1,7 +1,7 @@
 <template>
     <div class="flex flex-col gap-6 pt-6">
         <!-- Formulaire d'ajout / édition -->
-        <div v-if="isAdmin" class="grid grid-cols-2 gap-x-8 gap-y-3 rounded bg-white p-4 shadow">
+        <div v-if="isAdmin" class="grid grid-cols-2 gap-x-[44px] gap-y-4 rounded-lg bg-white px-7 py-5 shadow-[0_4px_4px_0_rgba(0,0,0,0.10)]">
             <MalioInputText
                 class="col-span-2"
                 :label="$t('directory.reports.fields.subject')"
@@ -50,8 +50,8 @@
                     </p>
                 </div>
                 <div v-if="isAdmin" class="flex gap-2">
-                    <MalioButtonIcon icon="mdi:pencil-outline" :aria-label="$t('common.edit')" @click="edit(report)" />
-                    <MalioButtonIcon icon="mdi:trash-can-outline" button-class="!text-red-600" :aria-label="$t('common.delete')" @click="remove(report.id)" />
+                    <MalioButtonIcon icon="mdi:pencil-outline" variant="ghost" :aria-label="$t('common.edit')" @click="edit(report)" />
+                    <MalioButtonIcon icon="mdi:delete-outline" variant="ghost" :aria-label="$t('common.delete')" @click="remove(report.id)" />
                 </div>
             </div>
             <p v-if="report.body" class="mt-2 whitespace-pre-wrap text-sm text-neutral-700">{{ report.body }}</p>

frontend/modules/directory/components/DirectoryAddressBlock.vue

@@ -1,13 +1,13 @@
 <template>
-    <div class="relative grid grid-cols-2 gap-x-8 gap-y-3 rounded bg-white p-4 shadow">
+    <div class="relative grid grid-cols-2 gap-x-[44px] gap-y-4 rounded-lg bg-white px-7 py-5 shadow-[0_4px_4px_0_rgba(0,0,0,0.10)]">
         <h3 class="col-span-2 text-sm font-semibold text-neutral-700">
             {{ title }}
         </h3>
         <MalioButtonIcon
             v-if="removable && !readonly"
-            icon="mdi:trash-can-outline"
-            class="absolute right-2 top-2"
-            button-class="!text-red-600"
+            icon="mdi:delete-outline"
+            variant="ghost"
+            class="absolute right-3 top-3"
             :aria-label="$t('common.delete')"
             @click="$emit('remove')"
         />

frontend/modules/directory/components/DirectoryContactBlock.vue

@@ -1,13 +1,13 @@
 <template>
-    <div class="relative grid grid-cols-2 gap-x-8 gap-y-3 rounded bg-white p-4 shadow">
+    <div class="relative grid grid-cols-2 gap-x-[44px] gap-y-4 rounded-lg bg-white px-7 py-5 shadow-[0_4px_4px_0_rgba(0,0,0,0.10)]">
         <h3 class="col-span-2 text-sm font-semibold text-neutral-700">
             {{ title }}
         </h3>
         <MalioButtonIcon
             v-if="removable && !readonly"
-            icon="mdi:trash-can-outline"
-            class="absolute right-2 top-2"
-            button-class="!text-red-600"
+            icon="mdi:delete-outline"
+            variant="ghost"
+            class="absolute right-3 top-3"
             :aria-label="$t('common.delete')"
             @click="$emit('remove')"
         />

frontend/modules/directory/composables/useDirectoryDetail.ts

@@ -6,10 +6,12 @@ import { useAddressService } from '~/modules/directory/services/addresses'
 type Owner = { client?: string, prospect?: string }
 
 /**
- * Logique partagée des fiches détail Client/Prospect : gestion des blocs
- * répétables Contact et Adresse (chargement, ajout, édition par bloc avec
- * persistance immédiate, suppression). Paramétré par l'IRI du propriétaire
- * (`{ client }` ou `{ prospect }`), réutilisé tel quel par les deux pages.
+ * Logique partagée des fiches détail Client/Prospect : blocs répétables Contact
+ * et Adresse (chargement, ajout, suppression). L'édition est tenue en mémoire
+ * localement ; la persistance se fait au clic sur « Enregistrer » (saveContacts/
+ * saveAddresses), comme les formulaires de tâche — pas d'enregistrement au blur.
+ * Paramétré par l'IRI du propriétaire (`{ client }` ou `{ prospect }`), réutilisé
+ * tel quel par les deux pages.
  */
 export function useDirectoryDetail(owner: Owner) {
     const contactService = useContactService()
@@ -17,6 +19,8 @@ export function useDirectoryDetail(owner: Owner) {
 
     const contacts = ref<Contact[]>([])
     const addresses = ref<Address[]>([])
+    const savingContacts = ref(false)
+    const savingAddresses = ref(false)
 
     function emptyContact(): Contact {
         return { id: 0, firstName: null, lastName: null, jobTitle: null, email: null, phonePrimary: null, phoneSecondary: null, ...owner }
@@ -25,54 +29,75 @@ export function useDirectoryDetail(owner: Owner) {
         return { id: 0, label: null, street: null, streetComplement: null, postalCode: null, city: null, country: 'FR', ...owner }
     }
 
-    async function onContactInput(index: number, value: Contact): Promise<void> {
+    // Édition locale uniquement : on remplace le bloc en mémoire, rien n'est
+    // persisté tant que l'utilisateur n'a pas cliqué sur « Enregistrer ».
+    function onContactInput(index: number, value: Contact): void {
         contacts.value[index] = value
-        await persistContact(index)
     }
-    async function persistContact(index: number): Promise<void> {
-        const c = contacts.value[index]
-        if (!c) return
-        const payload = { firstName: c.firstName, lastName: c.lastName, jobTitle: c.jobTitle, email: c.email, phonePrimary: c.phonePrimary, phoneSecondary: c.phoneSecondary, ...owner }
-        if (c.id && c.id > 0) {
-            await contactService.update(c.id, payload)
-        } else if (c.lastName || c.firstName) {
-            const created = await contactService.create(payload)
-            contacts.value[index] = created
-        }
+    function onAddressInput(index: number, value: Address): void {
+        addresses.value[index] = value
     }
+
     function addContact(): void {
         contacts.value.push(emptyContact())
     }
+    function addAddress(): void {
+        addresses.value.push(emptyAddress())
+    }
+
+    // Suppression immédiate (comme la corbeille du formulaire de tâche) : un bloc
+    // déjà enregistré est supprimé côté serveur, une amorce non enregistrée est
+    // simplement retirée de la liste.
     async function removeContact(index: number): Promise<void> {
         const c = contacts.value[index]
         if (c?.id && c.id > 0) await contactService.remove(c.id)
         contacts.value.splice(index, 1)
     }
-
-    async function onAddressInput(index: number, value: Address): Promise<void> {
-        addresses.value[index] = value
-        await persistAddress(index)
-    }
-    async function persistAddress(index: number): Promise<void> {
-        const a = addresses.value[index]
-        if (!a) return
-        const payload = { label: a.label, street: a.street, streetComplement: a.streetComplement, postalCode: a.postalCode, city: a.city, country: a.country, ...owner }
-        if (a.id && a.id > 0) {
-            await addressService.update(a.id, payload)
-        } else if (a.street || a.city || a.postalCode) {
-            const created = await addressService.create(payload)
-            addresses.value[index] = created
-        }
-    }
-    function addAddress(): void {
-        addresses.value.push(emptyAddress())
-    }
     async function removeAddress(index: number): Promise<void> {
         const a = addresses.value[index]
         if (a?.id && a.id > 0) await addressService.remove(a.id)
         addresses.value.splice(index, 1)
     }
 
+    // Persistance au clic : met à jour les blocs existants, crée les nouveaux
+    // blocs renseignés. Les amorces vides (sans contenu) sont ignorées.
+    async function saveContacts(): Promise<void> {
+        if (savingContacts.value) return
+        savingContacts.value = true
+        try {
+            for (let i = 0; i < contacts.value.length; i++) {
+                const c = contacts.value[i]
+                if (!c) continue
+                const payload = { firstName: c.firstName, lastName: c.lastName, jobTitle: c.jobTitle, email: c.email, phonePrimary: c.phonePrimary, phoneSecondary: c.phoneSecondary, ...owner }
+                if (c.id && c.id > 0) {
+                    contacts.value[i] = await contactService.update(c.id, payload)
+                } else if (c.lastName || c.firstName) {
+                    contacts.value[i] = await contactService.create(payload)
+                }
+            }
+        } finally {
+            savingContacts.value = false
+        }
+    }
+    async function saveAddresses(): Promise<void> {
+        if (savingAddresses.value) return
+        savingAddresses.value = true
+        try {
+            for (let i = 0; i < addresses.value.length; i++) {
+                const a = addresses.value[i]
+                if (!a) continue
+                const payload = { label: a.label, street: a.street, streetComplement: a.streetComplement, postalCode: a.postalCode, city: a.city, country: a.country, ...owner }
+                if (a.id && a.id > 0) {
+                    addresses.value[i] = await addressService.update(a.id, payload)
+                } else if (a.street || a.city || a.postalCode) {
+                    addresses.value[i] = await addressService.create(payload)
+                }
+            }
+        } finally {
+            savingAddresses.value = false
+        }
+    }
+
     async function load(): Promise<void> {
         contacts.value = await contactService.getByOwner(owner)
         addresses.value = await addressService.getByOwner(owner)
@@ -81,12 +106,16 @@ export function useDirectoryDetail(owner: Owner) {
     return {
         contacts,
         addresses,
+        savingContacts,
+        savingAddresses,
         onContactInput,
         addContact,
         removeContact,
+        saveContacts,
         onAddressInput,
         addAddress,
         removeAddress,
+        saveAddresses,
         load,
     }
 }

frontend/modules/directory/pages/directory/clients/[id].vue

@@ -19,13 +19,22 @@
                             @update:model-value="(v) => onContactInput(i, v)"
                             @remove="removeContact(i)"
                         />
-                        <MalioButton
-                            icon-name="mdi:plus"
-                            icon-position="left"
-                            button-class="w-auto px-4"
-                            :label="$t('directory.contacts.add')"
-                            @click="addContact"
-                        />
+                        <div class="flex justify-center gap-3 pt-2">
+                            <MalioButton
+                                variant="tertiary"
+                                icon-name="mdi:plus"
+                                icon-position="left"
+                                button-class="w-auto px-4"
+                                :label="$t('directory.contacts.add')"
+                                @click="addContact"
+                            />
+                            <MalioButton
+                                button-class="w-auto px-6"
+                                :label="$t('common.save')"
+                                :disabled="savingContacts"
+                                @click="saveContacts"
+                            />
+                        </div>
                     </div>
                 </template>
 
@@ -40,13 +49,22 @@
                             @update:model-value="(v) => onAddressInput(i, v)"
                             @remove="removeAddress(i)"
                         />
-                        <MalioButton
-                            icon-name="mdi:plus"
-                            icon-position="left"
-                            button-class="w-auto px-4"
-                            :label="$t('directory.addresses.add')"
-                            @click="addAddress"
-                        />
+                        <div class="flex justify-center gap-3 pt-2">
+                            <MalioButton
+                                variant="tertiary"
+                                icon-name="mdi:plus"
+                                icon-position="left"
+                                button-class="w-auto px-4"
+                                :label="$t('directory.addresses.add')"
+                                @click="addAddress"
+                            />
+                            <MalioButton
+                                button-class="w-auto px-6"
+                                :label="$t('common.save')"
+                                :disabled="savingAddresses"
+                                @click="saveAddresses"
+                            />
+                        </div>
                     </div>
                 </template>
 
@@ -76,12 +94,16 @@ const clientService = useClientService()
 const {
     contacts,
     addresses,
+    savingContacts,
+    savingAddresses,
     onContactInput,
     addContact,
     removeContact,
+    saveContacts,
     onAddressInput,
     addAddress,
     removeAddress,
+    saveAddresses,
     load,
 } = useDirectoryDetail(owner)
 

frontend/modules/directory/pages/directory/prospects/[id].vue

@@ -19,13 +19,22 @@
                             @update:model-value="(v) => onContactInput(i, v)"
                             @remove="removeContact(i)"
                         />
-                        <MalioButton
-                            icon-name="mdi:plus"
-                            icon-position="left"
-                            button-class="w-auto px-4"
-                            :label="$t('directory.contacts.add')"
-                            @click="addContact"
-                        />
+                        <div class="flex justify-center gap-3 pt-2">
+                            <MalioButton
+                                variant="tertiary"
+                                icon-name="mdi:plus"
+                                icon-position="left"
+                                button-class="w-auto px-4"
+                                :label="$t('directory.contacts.add')"
+                                @click="addContact"
+                            />
+                            <MalioButton
+                                button-class="w-auto px-6"
+                                :label="$t('common.save')"
+                                :disabled="savingContacts"
+                                @click="saveContacts"
+                            />
+                        </div>
                     </div>
                 </template>
 
@@ -40,13 +49,22 @@
                             @update:model-value="(v) => onAddressInput(i, v)"
                             @remove="removeAddress(i)"
                         />
-                        <MalioButton
-                            icon-name="mdi:plus"
-                            icon-position="left"
-                            button-class="w-auto px-4"
-                            :label="$t('directory.addresses.add')"
-                            @click="addAddress"
-                        />
+                        <div class="flex justify-center gap-3 pt-2">
+                            <MalioButton
+                                variant="tertiary"
+                                icon-name="mdi:plus"
+                                icon-position="left"
+                                button-class="w-auto px-4"
+                                :label="$t('directory.addresses.add')"
+                                @click="addAddress"
+                            />
+                            <MalioButton
+                                button-class="w-auto px-6"
+                                :label="$t('common.save')"
+                                :disabled="savingAddresses"
+                                @click="saveAddresses"
+                            />
+                        </div>
                     </div>
                 </template>
 
@@ -76,12 +94,16 @@ const prospectService = useProspectService()
 const {
     contacts,
     addresses,
+    savingContacts,
+    savingAddresses,
     onContactInput,
     addContact,
     removeContact,
+    saveContacts,
     onAddressInput,
     addAddress,
     removeAddress,
+    saveAddresses,
     load,
 } = useDirectoryDetail(owner)
 

infra/prod/deploy.sh

@@ -27,6 +27,9 @@ sudo docker compose cp app:/var/www/html/public/maintenance.html public/maintena
 echo "==> Running migrations..."
 sudo docker compose exec -T -u www-data app php bin/console doctrine:migrations:migrate --no-interaction
 
+echo "==> Seeding RBAC system roles (idempotent)..."
+sudo docker compose exec -T -u www-data app php bin/console app:seed-rbac
+
 echo "==> Syncing RBAC permissions catalog..."
 sudo docker compose exec -T -u www-data app php bin/console app:sync-permissions
 

src/Shared/Infrastructure/ApiPlatform/Serializer/ContractRelationDenormalizer.php

@@ -0,0 +1,96 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Shared\Infrastructure\ApiPlatform\Serializer;
+
+use ApiPlatform\Metadata\IriConverterInterface;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\Serializer\Normalizer\DenormalizerAwareInterface;
+use Symfony\Component\Serializer\Normalizer\DenormalizerAwareTrait;
+use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
+use Throwable;
+
+use function array_key_exists;
+use function is_string;
+
+/**
+ * Modular monolith: cross-module relations are typed with a Shared\Domain\Contract
+ * interface (e.g. UserInterface, TaskTagInterface) instead of the concrete entity,
+ * to keep modules decoupled. Doctrine maps those back to the concrete entity through
+ * resolve_target_entities.
+ *
+ * API Platform denormalizes *single* interface relations fine (the concrete class is
+ * derived from the IRI), but blows up on *collections*: the collection value type stays
+ * the interface, which is not a registered API resource, so no normalizer supports it
+ * and the request fails with NotNormalizableValueException.
+ *
+ * This denormalizer bridges that gap for every contract interface, reusing Doctrine's
+ * resolve_target_entities mapping (no per-entity config):
+ *  - a string value is an IRI -> resolved through the IriConverter
+ *  - an array value is an embedded object -> denormalized into the concrete entity
+ */
+final class ContractRelationDenormalizer implements DenormalizerInterface, DenormalizerAwareInterface
+{
+    use DenormalizerAwareTrait;
+
+    private const CONTRACT_NAMESPACE = 'App\Shared\Domain\Contract\\';
+
+    /** @var array<string, ?class-string> */
+    private array $resolved = [];
+
+    public function __construct(
+        private readonly IriConverterInterface $iriConverter,
+        private readonly EntityManagerInterface $entityManager,
+    ) {}
+
+    public function supportsDenormalization(mixed $data, string $type, ?string $format = null, array $context = []): bool
+    {
+        return null !== $this->concreteClassFor($type);
+    }
+
+    public function denormalize(mixed $data, string $type, ?string $format = null, array $context = []): ?object
+    {
+        $concrete = $this->concreteClassFor($type);
+        if (null === $concrete) {
+            return null;
+        }
+
+        if (is_string($data)) {
+            return $this->iriConverter->getResourceFromIri($data, $context);
+        }
+
+        // Embedded object payload: denormalize into the resolved concrete entity.
+        return $this->denormalizer->denormalize($data, $concrete, $format, $context);
+    }
+
+    public function getSupportedTypes(?string $format): array
+    {
+        // Support depends on the runtime-resolved Doctrine mapping, so it cannot be
+        // statically cached by the serializer.
+        return ['object' => false];
+    }
+
+    /**
+     * @return ?class-string the concrete entity a contract interface resolves to, or null
+     */
+    private function concreteClassFor(string $type): ?string
+    {
+        if (array_key_exists($type, $this->resolved)) {
+            return $this->resolved[$type];
+        }
+
+        if (!str_starts_with($type, self::CONTRACT_NAMESPACE) || !interface_exists($type)) {
+            return $this->resolved[$type] = null;
+        }
+
+        try {
+            $name = $this->entityManager->getClassMetadata($type)->getName();
+        } catch (Throwable) {
+            // Not a Doctrine-mapped (resolve_target_entities) interface.
+            return $this->resolved[$type] = null;
+        }
+
+        return $this->resolved[$type] = ($name !== $type ? $name : null);
+    }
+}

tests/Functional/Module/Shared/InterfaceCollectionDenormalizationTest.php

@@ -0,0 +1,119 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Tests\Functional\Module\Shared;
+
+use App\Module\Core\Domain\Entity\User;
+use App\Module\ProjectManagement\Domain\Entity\Project;
+use App\Module\ProjectManagement\Domain\Entity\TaskTag;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Bundle\FrameworkBundle\KernelBrowser;
+use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
+
+/**
+ * Regression: cross-module to-many relations are typed with a Shared contract
+ * interface (TaskTagInterface[], UserInterface[]). API Platform cannot
+ * denormalize a collection whose value type is an interface (no resource
+ * normalizer supports it), so every POST/PATCH carrying such a collection
+ * blew up with NotNormalizableValueException.
+ *
+ * @internal
+ */
+final class InterfaceCollectionDenormalizationTest extends WebTestCase
+{
+    protected function tearDown(): void
+    {
+        $conn = self::getContainer()->get(EntityManagerInterface::class)->getConnection();
+        $conn->executeStatement("DELETE FROM time_entry_task_type WHERE time_entry_id IN (SELECT id FROM time_entry WHERE title = 'iface-denorm-te')");
+        $conn->executeStatement("DELETE FROM time_entry WHERE title = 'iface-denorm-te'");
+        $conn->executeStatement("DELETE FROM task_collaborator WHERE task_id IN (SELECT id FROM task WHERE title = 'iface-denorm-task')");
+        $conn->executeStatement("DELETE FROM task WHERE title = 'iface-denorm-task'");
+        parent::tearDown();
+    }
+
+    public function testPostTimeEntryWithInterfaceTypedTags(): void
+    {
+        $client = self::createClient();
+        $em     = self::getContainer()->get(EntityManagerInterface::class);
+        $this->loginAdmin($client);
+
+        $userId = $this->adminId($em);
+        $tagId  = $this->aTaskTagId($em);
+
+        $client->request('POST', '/api/time_entries', server: [
+            'CONTENT_TYPE' => 'application/json',
+            'HTTP_ACCEPT'  => 'application/json',
+        ], content: json_encode([
+            'title'     => 'iface-denorm-te',
+            'startedAt' => '2026-06-22T10:00:00+02:00',
+            'stoppedAt' => '2026-06-22T11:00:00+02:00',
+            'user'      => '/api/users/'.$userId,
+            'tags'      => ['/api/task_tags/'.$tagId],
+        ]));
+
+        self::assertResponseStatusCodeSame(201, $client->getResponse()->getContent() ?: '');
+        $data = json_decode($client->getResponse()->getContent(), true);
+        self::assertCount(1, $data['tags'] ?? []);
+    }
+
+    public function testPostTaskWithInterfaceTypedCollaborators(): void
+    {
+        $client = self::createClient();
+        $em     = self::getContainer()->get(EntityManagerInterface::class);
+        $this->loginAdmin($client);
+
+        $userId    = $this->adminId($em);
+        $projectId = $this->aProjectId($em);
+
+        $client->request('POST', '/api/tasks', server: [
+            'CONTENT_TYPE' => 'application/json',
+            'HTTP_ACCEPT'  => 'application/json',
+        ], content: json_encode([
+            'title'         => 'iface-denorm-task',
+            'project'       => '/api/projects/'.$projectId,
+            'collaborators' => ['/api/users/'.$userId],
+        ]));
+
+        self::assertResponseStatusCodeSame(201, $client->getResponse()->getContent() ?: '');
+        $data = json_decode($client->getResponse()->getContent(), true);
+        self::assertCount(1, $data['collaborators'] ?? []);
+    }
+
+    private function loginAdmin(KernelBrowser $client): void
+    {
+        $em   = self::getContainer()->get(EntityManagerInterface::class);
+        $user = $em->getRepository(User::class)->findOneBy(['username' => 'admin']);
+        self::assertInstanceOf(User::class, $user);
+        $client->loginUser($user);
+    }
+
+    private function adminId(EntityManagerInterface $em): int
+    {
+        $user = $em->getRepository(User::class)->findOneBy(['username' => 'admin']);
+        self::assertInstanceOf(User::class, $user);
+
+        return $user->getId();
+    }
+
+    private function aTaskTagId(EntityManagerInterface $em): int
+    {
+        $tag = $em->getRepository(TaskTag::class)->findOneBy([]);
+        if (null === $tag) {
+            $tag = new TaskTag();
+            $tag->setLabel('iface-denorm-tag');
+            $em->persist($tag);
+            $em->flush();
+        }
+
+        return $tag->getId();
+    }
+
+    private function aProjectId(EntityManagerInterface $em): int
+    {
+        $project = $em->getRepository(Project::class)->findOneBy([]);
+        self::assertInstanceOf(Project::class, $project);
+
+        return $project->getId();
+    }
+}