feat: Complete migration to DeepFace with full integration and testing

This commit finalizes the migration from face_recognition to DeepFace across all phases. It includes updates to the database schema, core processing, GUI integration, and comprehensive testing. All features are now powered by DeepFace technology, providing superior accuracy and enhanced metadata handling. The README and documentation have been updated to reflect these changes, ensuring clarity on the new capabilities and production readiness of the PunimTag system. All tests are passing, confirming the successful integration.

src/photo_tagger.py

@@ -6,10 +6,15 @@ Simple command-line tool for face recognition and photo tagging
 
 import os
 import sys
+import warnings
 import argparse
 import threading
 from typing import List, Dict, Tuple, Optional
 
+# Suppress TensorFlow warnings (must be before DeepFace import)
+os.environ['TF_CPP_MIN_LOG_LEVEL'] = '3'
+warnings.filterwarnings('ignore')
+
 # Import our new modules
 from src.core.config import (
     DEFAULT_DB_PATH, DEFAULT_FACE_DETECTION_MODEL, DEFAULT_FACE_TOLERANCE,