- Added comprehensive field naming documentation (CA3_FIELD_NAMING.md)
- Implemented PDFTK-based PDF form filling with FDF generation
- Added PDFTK installation guide for Linux/Mac/Windows
- Enhanced PDF generation with company data integration
- Added new CA-3 lines: F1, F2 (intracom acquisitions), E1-E6, F6-F8, line 18
- Updated section structure: merged Section C into Section B as sub-section
- Added lines 19, 20 to TVA DÉDUCTIBLE sub-section
- Updated all field descriptions to match official CA-3 form
- Improved visual hierarchy with dark blue section headers
- Enhanced calculation logic for VAT deductible amounts
- Added comprehensive language translations
- Updated database schema with new fields
- Fixed font settings to use Courier New 9pt for official documents
