feat(front) : maj @malio/layer-ui 1.7.1 et refonte des drawers

- adaptation a l'API MalioDrawer 1.7 (titre via slot #header, footer frere du body scrollable)
- footer fixe : boutons 150px, justify-between, bordures header/footer
- permissions en accordeon Malio par module (RoleDrawer + UserRbacDrawer)
- cases a cocher sur une seule colonne
- suppression de PermissionGroup, devenu inutilise

Ajustements restants (layers/titres) a suivre.

frontend/modules/sites/components/SiteDrawer.vue

@@ -1,11 +1,17 @@
 <template>
     <MalioDrawer
         :model-value="modelValue"
-        :title="isEditMode ? t('admin.sites.editSite') : t('admin.sites.createSite')"
         drawer-class="w-full max-w-lg"
+        header-class="border-b border-black"
+        footer-class="justify-between border-t border-black p-6"
         @update:model-value="emit('update:modelValue', $event)"
     >
-        <form class="flex flex-col gap-6 p-4" @submit.prevent="handleSave">
+        <template #header>
+            <h2 class="text-[24px] font-bold">
+                {{ isEditMode ? t('admin.sites.editSite') : t('admin.sites.createSite') }}
+            </h2>
+        </template>
+        <form class="flex flex-col gap-4 py-4" @submit.prevent="handleSave">
             <MalioInputText
                 v-model="form.name"
                 :label="t('admin.sites.form.name')"
@@ -70,30 +76,35 @@
                 </p>
             </div>
 
-            <!-- Boutons -->
-            <div class="flex justify-end gap-3 border-t border-neutral-200 pt-4">
-                <MalioButton
-                    v-if="isEditMode"
-                    :label="t('common.delete')"
-                    variant="danger"
-                    icon-name="mdi:delete-outline"
-                    icon-position="left"
-                    @click="emit('delete')"
-                />
-                <MalioButton
-                    v-else
-                    :label="t('common.cancel')"
-                    variant="tertiary"
-                    @click="emit('update:modelValue', false)"
-                />
-                <MalioButton
-                    :label="t('common.save')"
-                    variant="primary"
-                    :disabled="saving || !isValidHex"
-                    @click="handleSave"
-                />
-            </div>
         </form>
+
+        <!-- Footer fixe : depuis la 1.7.1 le slot #footer est un frere du body
+             scrollable (shrink-0), donc reellement fige sans sticky. -->
+        <template #footer>
+            <MalioButton
+                v-if="isEditMode"
+                :label="t('common.delete')"
+                variant="danger"
+                icon-name="mdi:delete-outline"
+                icon-position="left"
+                button-class="w-[150px]"
+                @click="emit('delete')"
+            />
+            <MalioButton
+                v-else
+                :label="t('common.cancel')"
+                variant="tertiary"
+                button-class="w-[150px]"
+                @click="emit('update:modelValue', false)"
+            />
+            <MalioButton
+                :label="t('common.save')"
+                variant="primary"
+                button-class="w-[150px]"
+                :disabled="saving || !isValidHex"
+                @click="handleSave"
+            />
+        </template>
     </MalioDrawer>
 </template>