Update ML Intern artifact metadata

README.md

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+---
+tags:
+- ml-intern
+---
 # Agent Cost Optimizer (ACO)
 
 A universal control layer that reduces total cost of autonomous agent runs while **preserving task quality**.
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 *Built autonomously by ML Intern, 2025-07-05.*
+
+<!-- ml-intern-provenance -->
+## Generated by ML Intern
+
+This model repository was generated by [ML Intern](https://github.com/huggingface/ml-intern), an agent for machine learning research and development on the Hugging Face Hub.
+
+- Try ML Intern: https://smolagents-ml-intern.hf.space
+- Source code: https://github.com/huggingface/ml-intern
+
+## Usage
+
+```python
+from transformers import AutoModelForCausalLM, AutoTokenizer
+
+model_id = 'narcolepticchicken/agent-cost-optimizer'
+tokenizer = AutoTokenizer.from_pretrained(model_id)
+model = AutoModelForCausalLM.from_pretrained(model_id)
+```
+
+For non-causal architectures, replace `AutoModelForCausalLM` with the appropriate `AutoModel` class.