Suggestion: Add BillCraft - Free invoice generator for freelancers

[godfengliang]

Hi! I built BillCraft, a free browser-based invoice generator specifically useful for freelancers.

URL: https://billcraft-demo.surge.sh
Source: https://github.com/godfengliang/billcraft

Why it fits this list:

• Completely free, no subscription
• No signup required - just open and use
• Create professional invoices in 60 seconds
• 3 templates, 7 currencies, one-click PDF export
• Works offline - all data stays in browser localStorage
• Open source (MIT)

Would be great to have it listed under a Finance/Billing section. Thanks for considering!