Run1 token usage tracking

To meet the requirement of logging consumed tokens:

1. API Metadata: If using an external API (like OpenAI or Anthropic), retrieve usage.total_tokens from the response object.
2. Local Calculation: If using a local model or needing a manual count, use a library like tiktoken or the model's native tokenizer.

   # Example for tiktoken
   import tiktoken
   encoding = tiktoken.get_encoding("cl100k_base")
   num_tokens = len(encoding.encode(text_input)) + len(encoding.encode(text_output))
   

3. Validation: Always ensure the tokens value in the final JSON is a numeric type (e.g., 123) and not a string ("123").