Initial commit: Invoice field extraction system using YOLO + OCR

Features:
- Auto-labeling pipeline: CSV values -> PDF search -> YOLO annotations
- Flexible date matching: year-month match, nearby date tolerance
- PDF text extraction with PyMuPDF
- OCR support for scanned documents (PaddleOCR)
- YOLO training and inference pipeline
- 7 field types: InvoiceNumber, InvoiceDate, InvoiceDueDate, OCR, Bankgiro, Plusgiro, Amount

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

requirements.txt

@@ -0,0 +1,22 @@
+# Invoice Master POC v2 - Dependencies
+
+# PDF Processing
+PyMuPDF>=1.23.0              # PDF rendering and text extraction
+
+# OCR
+paddlepaddle>=2.5.0          # PaddlePaddle framework
+paddleocr>=2.7.0             # PaddleOCR
+
+# YOLO
+ultralytics>=8.1.0           # YOLOv8/v11
+
+# Image Processing
+Pillow>=10.0.0               # Image handling
+numpy>=1.24.0                # Array operations
+opencv-python>=4.8.0         # Image processing
+
+# Data Processing
+pyyaml>=6.0                  # YAML config files
+
+# Utilities
+tqdm>=4.65.0                 # Progress bars