Build a personal expense tracker:
- Add expenses with amount, category, date, and notes
- Categories: Food, Transport, Housing, Entertainment, Shopping, Health, Other
- Dashboard with total spending, category breakdown pie chart, and monthly bar chart
- List view of all expenses with edit and delete
- Filter by date range and category
- Monthly summary view
- Export to CSV
- All data in localStorage
Use Chart.js for charts. Clean, professional UI. Put in ~/data/public/