Project Simulation - Mini Invoicing & Expenses (Freelancer Edition)

A minimal invoicing tool for freelancers: create clients, issue invoices with tax, export PDF, log simple expenses, and view a monthly net summary.

Scope (MVP):
Client CRUD.
Invoice builder (items, qty, unit price, tax rate, totals).
Invoice statuses: Draft/Sent/Paid.
PDF export with simple branding.
Expenses log (date, category, amount, note).
Monthly summary: Income, Expenses, Net.

Deliverables:
App + source code
Clean PDF layout.
README + seed data (1 client, one invoice, three expenses).
Quick test notes (what to click to verify totals).

Bid Notes:
Show a sample PDF you've generated before (if available).
Mention how you'll validate totals and taxes.