feat : export PDF heures groupé depuis la liste employés + memory_limit 256M

- Nouveau endpoint GET /yearly-hours/print-all (admin, par mois uniquement)
- Service YearlyHoursExportBuilder extrait du provider existant (logique partagée)
- EmployeeYearlyHoursPrintProvider refactorisé pour utiliser le builder
- Template print-all.html.twig avec saut de page entre chaque employé
- Drawer BulkYearlyHoursDrawer avec loader "Génération en cours..."
- Bouton "Export heures" ajouté sur la page liste employés
- PHP memory_limit passé de 128M à 256M dans php.ini (nécessaire pour Dompdf multi-employés)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/pages/employees/index.vue

@@ -18,6 +18,13 @@
                     >
                         Export récap. salaire
                     </button>
+                    <button
+                        type="button"
+                        class="flex items-center gap-2 rounded-lg bg-primary-500 px-4 py-2 text-md font-semibold text-white hover:bg-secondary-500"
+                        @click="isYearlyHoursBulkOpen = true"
+                    >
+                        Export heures
+                    </button>
                     <button
                         type="button"
                         class="flex items-center gap-2 rounded-lg bg-primary-500 px-4 py-2 text-md font-semibold text-white hover:bg-secondary-500"
@@ -249,6 +256,12 @@
             v-model="isSalaryRecapOpen"
             @submit="handleSalaryRecapPrint"
         />
+
+        <BulkYearlyHoursDrawer
+            v-model="isYearlyHoursBulkOpen"
+            :is-loading="isYearlyHoursBulkLoading"
+            @submit="handleBulkYearlyHoursPrint"
+        />
     </div>
 </template>
 
@@ -264,6 +277,7 @@ import {listSites} from '~/services/sites'
 import {listInterimAgencies, type InterimAgency} from '~/services/interim-agencies'
 import SiteFilterSelector from '~/components/SiteFilterSelector.vue'
 import SalaryRecapDrawer from '~/components/SalaryRecapDrawer.vue'
+import BulkYearlyHoursDrawer from '~/components/BulkYearlyHoursDrawer.vue'
 import {contractNatureLabel, isContractNature, requiresContractEndDate, showsContractEndDate} from '~/utils/contract'
 import {usePdfPrinter} from '~/composables/usePdfPrinter'
 
@@ -275,6 +289,8 @@ const isDrawerOpen = ref(false)
 const isSubmitting = ref(false)
 const isLoading = ref(false)
 const isSalaryRecapOpen = ref(false)
+const isYearlyHoursBulkOpen = ref(false)
+const isYearlyHoursBulkLoading = ref(false)
 const { printPdf } = usePdfPrinter()
 const sitesInitialized = ref(false)
 const editingEmployee = ref<Employee | null>(null)
@@ -610,6 +626,17 @@ const handleSalaryRecapPrint = async (month: string) => {
     isSalaryRecapOpen.value = false
 }
 
+const handleBulkYearlyHoursPrint = async (payload: { year: number; month: number | null }) => {
+    isYearlyHoursBulkLoading.value = true
+    try {
+        const monthParam = null !== payload.month ? `&month=${payload.month}` : ''
+        await printPdf(`/yearly-hours/print-all?year=${payload.year}${monthParam}`)
+        isYearlyHoursBulkOpen.value = false
+    } finally {
+        isYearlyHoursBulkLoading.value = false
+    }
+}
+
 const confirmDelete = async (employee: Employee) => {
     const ok = window.confirm(`Supprimer ${employee.firstName} ${employee.lastName} ?`)
     if (!ok) return