MonBusiness: When AI Helped Me Build My Sister a Business in One Week

This is a submission for the GitHub Copilot CLI Challenge The Challenge My sister runs a small grocery shop in Lomé, Togo. Every night, she counts cash by hand and scribbles calculations in a worn notebook, trying to figure out which products are actually profitable. She had one request: "I just wish there was something simple and free that could help me know if I'm actually making money." My constraints: One week of evenings (2 hours max per night) Spotty connectivity in Lomé Zero budget (no backend, no hosting costs) Her phone: 2018 Android, sometimes slow connection Real-time feedback from actual shop operations The question wasn't could I build it—it was could I build it fast enough to matter? Enter GitHub Copilot CLI. What I Built MonBusiness is a mobile-first PWA for small business owners across West Africa who need dead-simple profit tracking without complexity, cost, or technical barriers. Core features: Product inventory with low-stock alerts Transaction recording (purchases,