irlegend2021

# Forge Costing System – Gable Truss Prototype

## 🧭 AI Instruction Header
You are an expert full-stack engineer experienced with **Loveable** (front-end + logic) and **Supabase** (Postgres + Edge Functions).

Your task is to design and implement this application according to the full specification below.

When interpreting this document:
- Headings and tables define the functional requirements.
- Code blocks are canonical examples.