React Native Elevator Login Module

I need a self-contained login module for an elevator maintenance mobile app. Here’s the stack and what I’m after: • Front end: React Native screen that displays our supplied logo, collects email/username and password, validates input, and handles success/error messages gracefully on both iOS and Android. • Back end: Node.js (Express preferred) endpoint running on Render.com. It should create, authenticate, and authorize a single user type—Maintenance personnel—with the “Technician” role. Use secure password hashing with a unique salt per user and issue a JWT (or similarly secure token) on successful login. • Database: PostgreSQL instance on Render.com. Set up the users table plus any minimal support tables. Each user record must store salted/hashed password, personal details, and an activity log reference. Please include SQL migrations or Prisma/​Knex scripts so the schema can be recreated easily. • Continuity: Structure the code so additional roles (Administrator, Manager) and profile fields can be added later without rewrites. • Deliverables: – React Native component(s) with clear navigation hooks. – Node.js source with environment‐driven config. – SQL/​migration scripts and a brief README covering setup, env vars, and test credentials. – Postman collection or curl samples for quick testing. Once this module is solid, there’s an option to stay on for 3–4 months of feature work on a monthly retainer, so write clean, extendable code and document it well.