More powerful model

This is the deployment of the more powerful model we had to rollback in October, now hidden behind a Feature Toggle that will allow us to roll it out customer per customer. For now, its activation is only possible for new customers (and it is activated by default for them). A migration for current customers will be coming soon.

It comes with a new way of generating criteria: they are now enriched with AI, informing users on how their prompts were interpreted, and allowing them to make adjustments if needed. It should help our customers design powerful criteria, and result in more accurate evaluations.