📘 Simple User Guide

1. Purchase and create an account

After Stripe confirms payment, Postmark emails a one-time Access Code. Create the account with that code and the same purchaser email, or log in if an account already exists.

2. Use selector guides

Review objectives, procedures, formulas, and success criteria.

3. Practice with case studies

Filter cases, open one, then Save As Project.

4. Run the selector

Enter current, normal force, cycles, humidity, temperature, environment, and candidate finish.

5. Build project reports

Edit a project as evidence grows, then download a Markdown report.

6. Production deployment

Vercel requires Neon PostgreSQL, Stripe webhook signing, an Access Code secret, and Postmark sender credentials. Store all secrets in Vercel Environment Variables, never in Git.