- Added `check_invoice_number_exists` method in `EconomicService` to verify invoice numbers in e-conomic journals.
- Introduced `quick_analysis_on_upload` method in `OllamaService` for extracting critical fields from uploaded PDFs, including CVR, document type, and document number.
- Created migration script to add new fields for storing detected CVR, vendor ID, document type, and document number in the `incoming_files` table.
- Developed comprehensive tests for the quick analysis functionality, validating CVR detection, document type identification, and invoice number extraction.
- Added FastAPI views for supplier invoices in the billing frontend.
- Created EconomicService for handling e-conomic API interactions, including safety modes for read-only and dry-run operations.
- Developed database migration for supplier invoices, including tables for invoices, line items, and settings.
- Documented kassekladde module features, architecture, API endpoints, and usage guide in KASSEKLADDE.md.
- Implemented views for overdue invoices and pending e-conomic sync.
