feat(admin): add categories and teams management page

app/pages/admin/users.vue

@@ -13,6 +13,7 @@ const { getUsers, updateUserBan, updateUserRoles } = useAdmin()
 const { data: usersRes, pending, refresh } = useAsyncData('admin-users', () => getUsers())
 
 const search = ref('')
+const parseRoles = (roles?: string) => roles ? roles.split(',').map((r) => r.trim()).filter(Boolean) : []
 
 const filteredUsers = computed(() => {
   if (!usersRes.value?.users) return []
@@ -47,7 +48,7 @@ const availableRoles = ['CITIZEN', 'OPERATOR', 'ADMIN']
 
 const openRoleModal = (user: any) => {
   editingUserId.value = user.id
-  selectedRoles.value = user.roles ? user.roles.split(',').map((r: string) => r.trim()) : []
+  selectedRoles.value = parseRoles(user.roles)
 }
 
 const closeRoleModal = () => {
@@ -118,8 +119,8 @@ const saveRoles = async () => {
               <small class="text-muted">{{ user.fiscal_code }}</small>
             </td>
             <td>
-              <span v-for="r in (user.roles ? user.roles.split(',') : [])" :key="r" class="badge bg-primary me-1">
-                {{ r.trim() }}
+              <span v-for="r in parseRoles(user.roles)" :key="r" class="badge bg-primary me-1">
+                {{ r }}
               </span>
             </td>
             <td>{{ user.points || 0 }}</td>