- Add CSV export utility for ledger data (generateLedgerCSV)
- Export formatters: pence to pounds, proper CSV escaping
- Date range filtering (from/to inputs) on reports page
- Export CSV button with proper formatting for accountants
- New \"Trends\" tab with visual profit trend chart
- SVG bar chart shows last 12 months of profit
- Charts color-coded: green (profit), red (loss)
- Shows monthly values and best/worst month stats
- Export functionality:
- Filters by date range
- Combines all income sources (orders + manual sales)
- Includes COGS (purchases) and expenses
- Generates PDF-ready CSV with summary rows
- Downloads with proper date-stamped filename
CSV exports are formatted for accountants and tax software:
- Includes summary totals
- Proper date formatting (DD/MM/YYYY)
- Escaped descriptions for safe import
- Clear categorization
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
