feat: complete UI/UX refinement, email flow updates, and deep black theme

- Updated all email templates to a clean light theme and changed button text to 'Finalizar Cadastro'.

- Enforced a strict 15-minute expiration on all auth/reset tokens.

- Created SetupAccount flow distinct from ResetPassword to capture user name during admin init.

- Refined dark mode to a premium True Black (Onyx) palette using Zinc.

- Fixed Dashboard KPI visibility and true period-over-period trend logic.

- Enhanced TeamManagement with global tenant filtering for Super Admins.

- Implemented secure User URL routing via slugs instead of raw UUIDs.

- Enforced strict Agent-level RBAC for viewing attendances.

components/SellersTable.tsx

@@ -106,7 +106,7 @@ export const SellersTable: React.FC<SellersTableProps> = ({ data }) => {
               <tr 
                 key={item.user.id} 
                 className="hover:bg-yellow-50/10 dark:hover:bg-yellow-400/5 transition-colors cursor-pointer group"
-                onClick={() => navigate(`/users/${item.user.id}`)}
+                onClick={() => navigate(`/users/${item.user.slug || item.user.id}`)}
               >
                 <td className="px-6 py-4">
                   <div className="flex items-center gap-3">