refactor(ui): replace RoleBadge with generic Badge component

- add `dot` and `onRemove` props to Badge for colored dot and removable tag support
- delete RoleBadge component in favor of Badge with dot prop
- update UserCreateModal, UserEditModal, and UsersPage to use Badge instead of RoleBadge
- remove RoleBadge export from shared components index

src/features/admin/components/UserCreateModal.client.js

@@ -1,7 +1,7 @@
 'use client';
 
 import { useState, useEffect } from 'react';
-import { Input, TagInput, Modal, RoleBadge } from '@zen/core/shared/components';
+import { Input, TagInput, Modal, Badge } from '@zen/core/shared/components';
 import { useToast } from '@zen/core/toast';
 
 const UserCreateModal = ({ isOpen, onClose, onSaved }) => {
@@ -133,7 +133,7 @@ const UserCreateModal = ({ isOpen, onClose, onSaved }) => {
                     onChange={setSelectedRoleIds}
                     placeholder="Rechercher un rôle..."
                     renderTag={(opt, onRemove) => (
-                        <RoleBadge key={opt.value} name={opt.label} color={opt.color} onRemove={onRemove} />
+                        <Badge key={opt.value} color={opt.color} dot onRemove={onRemove}>{opt.label}</Badge>
                     )}
                 />