Add proper dependencies as requested by ChatGPT

- Updated requirements.txt with proper versions and dependencies
- Added PyMuPDF>=1.24, Pillow>=10, zxing-cpp>=2.1
- Added pyzbar>=0.1.9, pylibdmtx>=0.1.10
- Added opencv-python-headless>=4.9, regex>=2023.10.3
- Created packages.txt with libzbar0 and libdmtx0a
- Improved barcode detection capabilities with robust dependencies

packages.txt

@@ -0,0 +1,2 @@
+libzbar0
+libdmtx0a

requirements.txt

@@ -1,20 +1,18 @@
-Flask==2.3.3
-Werkzeug==2.3.7
-PyPDF2==3.0.1
+PyMuPDF>=1.24
+Pillow>=10
+zxing-cpp>=2.1      # ZXing-C++ bindings (multi-symbology, very robust)
+pyzbar>=0.1.9       # ZBar bindings (needs libzbar0 from apt)
+pylibdmtx>=0.1.10   # DataMatrix; wheels usually include libdmtx, but see packages.txt below
+opencv-python-headless>=4.9
+regex>=2023.10.3
+gradio==4.44.1
 pdf2image==1.16.3
-Pillow==10.0.1
-opencv-python==4.8.1.78
 pytesseract==0.3.10
-pyzbar==0.1.9
 pyspellchecker==0.8.3
-nltk==3.8.1
 numpy==1.24.3
 scikit-image==0.21.0
 matplotlib==3.7.2
 pandas==2.0.3
 reportlab==4.0.4
-regex==2025.9.1
-gradio==4.44.1
-PyMuPDF==1.23.8
 # Force rebuild - 2025-09-18T02:10:00Z
 # HF NOT RESPONDING - EMERGENCY REBUILD - 2025-09-18T02:15:00Z