- Unified PDF/TXT parsing to single POST /api/delivery/parse endpoint
- Added supplier article lookup with SKU/EAN matching in delivery lines
- Added "Artikel anlegen" button to create articles from missing SKUs
- Fixed delivery line taxrate field (was sending 'tax', now 'taxrate')
- Extended TXT file support for rescan functionality
- Updated ApiClient with getArticles method for supplier article lookup
- Added supplier article state management to deliveryEditorAutomat
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