[FEATURE]: Add the new Kimi K2.6 Turbo model from Fireworks.ai Pass subscription

[lstep]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

The Fireworks.AI Pass subscription (https://app.fireworks.ai/fire-pass) has changed and now uses Kimi K2.6 Turbo instead of Kimi K2.5 Turbo (Kimi K2.5 Turbo not being available anymore), but in the opencode /models interface there is only the Kimi K2.5 Turbo model available. Is it possible to update the models list?