fix: Correct server_port value in application configuration

utils/config.py

@@ -30,7 +30,7 @@ def get_app_config() -> Dict[str, Any]:
         Dict[str, Any]: Application configuration settings
     """
     return {
-        "server_port": 7861,       # Use different port to avoid conflicts
+        "server_port": 7862,       # Use a different port to avoid conflicts
         "debug": True,             # Enable debug mode for development
         "quiet": False,            # Show startup messages
         "max_file_size": "10mb"    # Limit PDF file size