This PR improves the model card for the Boundary Predictor model. It adds relevant metadata, including the library name and pipeline tag, and provides a description of the model's function within the TESSY framework. It also links the model to the research paper [How to Fine-Tune a Reasoning Model? A Teacher-Student Cooperation Framework to Synthesize Student-Consistent SFT Data](https://huggingface.co/papers/2604.14164) and includes the citation.
