EFI Harness Planner

A full-stack planning application for electronic fuel injection harnesses, using NestJS, React, TypeScript, JWT authentication, and subscription-tier business rules.

1. Elevator Pitch

A niche full-stack product for planning EFI wiring harnesses with project management, domain constraints, and recipe generation.

2. Problem and Context

Manual harness planning is error-prone and hard to standardize. The project turns that workflow into a structured domain application.

3. Scope and Role

End-to-end full-stack implementation.
Authentication and persistence strategy.
Business rules by subscription plan.

4. Solution Implemented

Decoupled backend/frontend architecture with APIs for project registration, harness definitions (materials/wires/connectors), and build recipe generation.

5. Stack and Architecture

Backend: NestJS (Express), Prisma, SQLite, JWT.
Frontend: React + Vite + TypeScript + Mantine.
Domain rules: tier-based limits and capabilities (Basic/Pro/Elite).

6. Quality and Engineering Practices

Clear repository structure (backend/ and frontend/).
Reproducible setup using Prisma migrations.
Product-oriented foundation ready for future iterations.

7. Portfolio Relevance

Shows your ability to translate a specific operational domain into a production-style full-stack system.

8. Links

GitHub: https://github.com/josenaldo/injection-harness
Production: no public production URL declared in the repository.