Integration and Enhancement of Two Scripts

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