From a Login Screen to a Real ERP Flow: Building Navigation and the First Inventory Module

A few days ago, this project was still basically a login screen. Now it has a responsive application shell, authenticated navigation, a module-based home screen, and its first real inventory flow connected to Supabase in production. This article covers Sessions 5 and 6 of my project, ERP Modular, an open source ERP I am building as both a portfolio project and a deliberate way to learn professional software development in practice. App demo video: [Watch the current app running here] https://dev-to-uploads.s3.amazonaws.com/uploads/articles/z3cbtb0342nezld3g1bu.gif https://dev-to-uploads.s3.amazonaws.com/uploads/articles/cqjy3djighzy3vgzbk8r.gif Why these two sessions mattered so much Up to Session 4, I had already done the architectural planning, set the rules for the project, and implemented authentication. The system could log in and log out, but it still did not feel like an ERP yet. Sessions 5 and 6 changed that. Session 5 gave the project a real application structure: authenticate