Build a Full-Stack AI Invoice Manager App | PERN, React, Node.js, Postgres, Express

1. User Authentication – JWT + bcrypt, secure http-only cookie session, protected routes & auto-login

2. Client CRM – add, edit & delete clients with full invoice history & outstanding balances

3. Invoice Builder – live line-item editor with auto totals, tax, discounts & multi-currency

4. Auto-Numbering & Status – per-user invoice numbers + Draft / Sent / Paid / Overdue tracking

5. PDF Export – generate clean, print-ready invoice PDFs

6. Payments Ledger – record payments that auto-reconcile an invoice to Paid

7. Expense Tracking – log business expenses by category with monthly totals

8. Services Catalog – reusable line items you drop into any invoice in one click

9. Analytics Dashboard – revenue, outstanding, collections gauge, receivables aging & top clients

10. Reports & CSV Export – revenue vs expenses, status breakdown & one-click CSV export

11. AI Receipt Scanning – Gemini Vision turns a receipt image/PDF into a filled-in invoice or expense

12. AI Business Summary – a plain-English read on your month's revenue over your own data

13. AI Payment Reminders – friendly, firm, or final-notice reminder emails, written for you

14. AI Notes Writer – professional service descriptions & payment-terms text

Watch Video: https://youtu.be/FrRSqYYzBlk

The Source Code is provided in a Zip file.