Support MiniMax 2.7 Model in Model Selection

[thexclu]

Problem or Motivation

MiniMax already released the 2.7 model, but in Craft Agents we can only pick 2.5 right now.

This makes it hard to try out the newer model or compare results. The model is already live on MiniMax’s side, but not accessible here, so there’s a clear mismatch.

Reference: https://platform.minimax.io/docs/guides/text-generation

Proposed Solution

Add MiniMax 2.7 as a selectable model
Keep 2.5 available so users can switch and compare
If there are API changes, align the integration accordingly

Alternatives Considered

No response

Additional Context

No response

[rjulius23]

Coming with the new Pi SDK.

[thexclu]

Shipped on 0.8.5