TODOs in availability.py

These TODOs are in in availability.py 

<img width="534" height="95" alt="Image" src="https://github.com/user-attachments/assets/a347822d-29ad-4cea-a24a-f94366da9a11" />

<img width="775" height="168" alt="Image" src="https://github.com/user-attachments/assets/14b627d8-79c1-4b2a-b2bc-72f54a3fe80e" />