Implement CoreML signal spectrum search and classification

Need a comprehensive ML strategy here.

<img width="1405" height="734" alt="Image" src="https://github.com/user-attachments/assets/e6f6a6f4-fb70-45f2-9062-5f3f540309fa" />

## Very early, sparse thinking

<img width="3041" height="1983" alt="Image" src="https://github.com/user-attachments/assets/6b77d77d-4bc8-46cd-96ba-bd8e424a4f97" />