fix: default tetrate model is broken, replace with haiku-4.5 (#5535)

[ecki]

Summary

This avoids model errors after initial sign-up with Tetrate router.

Type of Change

• [x] Bug fix

AI Assistance

• [ ] This PR was created or reviewed with AI assistance

Testing

Cant build myself.

Related Issues

Relates to #5535

[ecki]

this works for me:

[katzdave]

Would claude-4-sonnet or claude-4-5-sonnet work? Would rather not downgrade the model too much.

[ecki]

Sure, whatever you prefer. However for a free provider and initial experience I would go with fast and cheap. It’s not a downgrade as the model before did not work :)

[katzdave]

Sure, whatever you prefer. However for a free provider and initial experience I would go with fast and cheap. It’s not a downgrade as the model before did not work :)

Fair enough; cheap is good, agreed!

[jamadeo]

thank you @ecki , could you do the DCO thing and then we'll merge?

[ecki]

thank you @ecki , could you do the DCO thing and then we'll merge?

Ok, should be good to go now.