fix(rbac) : rattache le rôle de base « user » et gate le frontend par permission

Un user avec des permissions sur le rôle RBAC « user » ne voyait rien : le
ROLE_USER legacy n'a aucun lien avec le RBAC et getEffectivePermissions() ne lit
que rbacRoles + permissions directes, alors qu'aucun user n'était rattaché au
rôle « user » (table user_role vide, jamais backfillée).

Backend
- DefaultUserRoleAssigner + UserDefaultRoleListener (prePersist) : tout nouvel
  utilisateur est rattaché au rôle « user » sur tous les chemins de persistance.
- Commande app:assign-default-roles (backfill idempotent) + ajout au deploy.sh.
- AppFixtures : seed des rôles système avant la création des users.

Frontend (gating par permission au lieu de ROLE_ADMIN legacy)
- Nouveau middleware « permission » + augmentation PageMeta : definePageMeta
  ({ permission }) (string = requise, array = any), ROLE_ADMIN bypasse.
- Pages directory/reporting/admin gatées par permission ; SidebarFilter accepte
  une liste de permissions (any) ; section admin sans gate de rôle.
- team-absences reste en ROLE_ADMIN (module Absence non RBAC-isé côté backend).

frontend/app/middleware/permission.ts

@@ -0,0 +1,23 @@
+export default defineNuxtRouteMiddleware((to) => {
+    const auth = useAuthStore()
+
+    if (!auth.isAuthenticated) {
+        return navigateTo('/login')
+    }
+
+    // Gate the route on the RBAC permission(s) declared via definePageMeta.
+    // A string requires that single permission; an array requires ANY of them.
+    // ROLE_ADMIN bypasses everything through usePermissions().can().
+    const required = to.meta.permission
+
+    if (required === undefined) {
+        return
+    }
+
+    const { canAny } = usePermissions()
+    const codes = Array.isArray(required) ? required : [required]
+
+    if (!canAny(codes)) {
+        return navigateTo('/')
+    }
+})

frontend/app/types/page-meta.d.ts

@@ -0,0 +1,16 @@
+// Augments Nuxt page meta with the RBAC permission gate consumed by the
+// `permission` route middleware. A string requires that single permission;
+// an array requires ANY of the listed permissions.
+declare module '#app' {
+    interface PageMeta {
+        permission?: string | string[]
+    }
+}
+
+declare module 'vue-router' {
+    interface RouteMeta {
+        permission?: string | string[]
+    }
+}
+
+export {}

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

@@ -136,7 +136,7 @@ import type { Client } from '~/modules/directory/services/dto/client'
 import { useClientService } from '~/modules/directory/services/clients'
 import { isValidEmail, isValidFrPhone, isValidUrl } from '~/modules/directory/utils/validation'
 
-definePageMeta({ middleware: ['admin'] })
+definePageMeta({ middleware: ['permission'], permission: 'directory.clients.view' })
 
 const route = useRoute()
 const router = useRouter()

frontend/modules/directory/pages/directory/index.vue

@@ -210,7 +210,7 @@ import type { Prestataire } from '~/modules/directory/services/dto/prestataire'
 import { usePrestataireService } from '~/modules/directory/services/prestataires'
 import { readHistoryTab, stampHistoryTab } from '~/utils/historyTab'
 
-definePageMeta({ middleware: ['admin'] })
+definePageMeta({ middleware: ['permission'], permission: ['directory.clients.view', 'directory.prospects.view', 'directory.providers.view'] })
 
 type ProspectRow = Prospect
 

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

@@ -136,7 +136,7 @@ import type { Prestataire } from '~/modules/directory/services/dto/prestataire'
 import { usePrestataireService } from '~/modules/directory/services/prestataires'
 import { isValidEmail, isValidFrPhone, isValidUrl } from '~/modules/directory/utils/validation'
 
-definePageMeta({ middleware: ['admin'] })
+definePageMeta({ middleware: ['permission'], permission: 'directory.providers.view' })
 
 const route = useRoute()
 const router = useRouter()

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

@@ -158,7 +158,7 @@ import type { Prospect, ProspectStatus } from '~/modules/directory/services/dto/
 import { useProspectService } from '~/modules/directory/services/prospects'
 import { isValidEmail, isValidFrPhone, isValidUrl } from '~/modules/directory/utils/validation'
 
-definePageMeta({ middleware: ['admin'] })
+definePageMeta({ middleware: ['permission'], permission: 'directory.prospects.view' })
 
 const route = useRoute()
 const router = useRouter()

frontend/modules/reporting/pages/reporting.vue

@@ -206,7 +206,7 @@ import type { UserData } from '~/services/dto/user-data'
 import { useProjectService } from '~/modules/project-management/services/projects'
 import { useUserService } from '~/services/users'
 
-definePageMeta({ middleware: ['admin'] })
+definePageMeta({ middleware: ['permission'], permission: 'reporting.view' })
 
 const { t } = useI18n()
 useHead({ title: t('reporting.title') })

frontend/pages/admin.vue

@@ -40,7 +40,7 @@
 </template>
 
 <script setup lang="ts">
-definePageMeta({ middleware: ['admin'] })
+definePageMeta({ middleware: ['permission'], permission: 'core.users.view' })
 useHead({ title: 'Administration' })
 
 const { can } = usePermissions()