I have 2 scripts from codecan you edemand and ebroker What I am looking for Final Scope of understanding: 1. Core Integration Module (SSO + Firebase) * Unified login (Mobile + OTP only) * Shared users table OR real-time sync API * Firebase setup (same project for both apps) * Token/session handling across eBroker & eDemand * Push notification configuration 2. Shared Address Book Module * Centralized address table * API integration for both apps * Auto-sync saved addresses across apps * CRUD (Add/Edit/Delete) APIs * Backward compatibility with existing schema 3. UX Enhancements Module * OTP-only authentication flow (remove passwords) * Floating Action Button (Call Support) * Optimize booking flow (reduce steps) * UI/UX adjustments in both apps 4. Server Setup & VPS Optimization (Hostinger) * VPS setup (PHP 8.1+, MySQL tuning) * SSL (HTTPS) * Nginx/Apache optimization * Caching (Redis optional) * Security hardening (firewall, fail2ban) * Deployment of both scripts 5. API & Webhook Enablement * API exposure (secure endpoints) * Webhook system for events (booking, user signup, etc.) * Ready integration support for WhatsApp tools (like WATI) * Documentation 6. Admin & Marketing Tools * Export users (Excel/CSV) * Filters (date, location, activity) * Bulk push notification panel * Admin dashboard improvements 7. Testing & QA * End-to-end testing (both apps) * OTP flow validation * Load testing (basic) * Bug fixing before launch 2 apps with same login and database