fix: remove some requirements

requirements.txt

@@ -1,36 +1,16 @@
-# Azure services
+# Azure services (required)
 azure-ai-formrecognizer==3.3.0
 azure-core>=1.29.0
 openai>=1.0.0
 
-# PDF processing
-pdf2image==1.17.0
-Pillow>=10.0.0
-pytesseract==0.3.13  # Fallback OCR
-pdfplumber==0.10.3  # Enhanced table extraction
+# Environment variables
+python-dotenv==1.0.0
+
+# PDF processing (required for page counting)
 PyPDF2>=3.0.1
 
-# CLI and utilities
+# CLI interface
 click==8.1.7
-pathlib2==2.3.7.post1
 
-# Data handling
-numpy>=1.24.0
-python-dateutil>=2.8.2
-
-# For better logging
-colorlog>=6.7.0
-
-# Development tools (optional)
-pytest>=7.4.0
-black>=23.0.0
-flake8>=6.0.0
-
-# Type hints
-typing-extensions>=4.0.0
-dataclasses>=0.6
-
-# For text processing
-nltk>=3.8.1
-textstat>=0.7.3
-python-dotenv==1.0.0
+# Python built-in modules extensions (if needed for older Python versions)
+typing-extensions>=4.0.0  # Only if Python < 3.8