feat: replace mock system with real backend, RBAC, and Teams management

- Implemented real JWT authentication and persistent user sessions
- Replaced all hardcoded mock data with dynamic MySQL-backed API calls
- Created new 'Times' (Teams) dashboard with performance metrics
- Renamed 'Equipe' to 'Membros' and centralized team management
- Added Role-Based Access Control (RBAC) for Admin/Manager/Agent roles
- Implemented secure invite-only member creation and password setup flow
- Enhanced Login with password visibility and real-time validation
- Added safe delete confirmation modal and custom Toast notifications

constants.ts

@@ -1,8 +1,6 @@
 
 import { Attendance, FunnelStage, Tenant, User } from './types';
 
-export const CURRENT_TENANT_ID = 'tenant_123';
-
 export const TENANTS: Tenant[] = [
   { 
     id: 'tenant_123',