# Enhancement Modules

Additional features for the Shop POS system. Each module is self-contained.

## Modules

- validation.js - Price/data validation
- scanner.js - Barcode/QR scanner
- fuzzy.js - Fuzzy search for typos
- shortcuts.js - Keyboard shortcuts
- categories.html - Category filter sidebar
- stock.html - Stock tracking
- suppliers.js - Supplier management
- csv-import.html - CSV bulk import
- reports.html - Sales reports
- profit.js - Profit calculator
- export.js - Excel/PDF export
- auth.js - Multi-user login
- cloud-sync.js - Google Sheets sync
- versioning.js - Data versioning
- autosave.js - Auto-save
- offline.js - Offline mode
- undo-redo.js - Undo/redo

## Scripts

- cleanup_data.php - Fix null values in data.json