NEW FEATURES:
✅ PDF Generation Class (DeclarationTVA_PDF)
✅ Template Management System (Official + Custom)
✅ PDF Export Button in Declaration View
✅ Template Upload/Reset in Configuration
✅ Official CA-3 Template Support (10963*30)
TECHNICAL IMPLEMENTATION:
- core/class/declarationtva_pdf.class.php: Complete PDF generation system
- templates/declarationtva/: Template storage directory
- Template management in admin/setup_mvp.php
- PDF export action in declarationtva_view.php
- Bilingual support (French/English)
TEMPLATE SYSTEM:
- Built-in official template (10963*30)
- Custom template upload capability
- Template validation and version management
- Fallback to official template if custom not available
PDF FEATURES:
- Professional CA-3 layout with all sections
- Company information and declaration details
- Complete CA-3 line data with amounts
- Totals and calculations display
- Downloadable PDF files
This adds professional PDF export functionality to the CA-3 declaration system!
