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.

pages/UserDetail.tsx

@@ -3,6 +3,7 @@ import { useParams, Link } from 'react-router-dom';
 import { getAttendances, getUserById } from '../services/dataService';
 import { Attendance, User, FunnelStage, DashboardFilter } from '../types';
 import { ArrowLeft, Mail, Phone, Clock, MessageSquare, ChevronLeft, ChevronRight, Eye, Filter } from 'lucide-react';
+import { DateRangePicker } from '../components/DateRangePicker';
 
 const ITEMS_PER_PAGE = 10;
 
@@ -13,7 +14,7 @@ export const UserDetail: React.FC = () => {
   const [loading, setLoading] = useState(true);
   const [currentPage, setCurrentPage] = useState(1);
   const [filters, setFilters] = useState<DashboardFilter>({
-    dateRange: { start: new Date(0), end: new Date() },
+    dateRange: { start: new Date(Date.now() - 30 * 24 * 60 * 60 * 1000), end: new Date() },
     userId: id,
     funnelStage: 'all',
     origin: 'all'
@@ -121,6 +122,11 @@ export const UserDetail: React.FC = () => {
           <span>Filtros:</span>
         </div>
 
+        <DateRangePicker 
+          dateRange={filters.dateRange} 
+          onChange={(range) => handleFilterChange('dateRange', range)} 
+        />
+
         <select 
           className="bg-zinc-50 dark:bg-dark-bg border border-zinc-200 dark:border-dark-border px-3 py-2 rounded-lg text-sm text-zinc-700 dark:text-zinc-200 outline-none focus:ring-2 focus:ring-brand-yellow/20 cursor-pointer hover:border-zinc-300 dark:hover:border-zinc-700 transition-all"
           value={filters.funnelStage}