Claude Sonnet 5 is in the model picker

Claude Sonnet 5 is now selectable in Playcode's AI model picker.

It is a new Sonnet option for builders who want a stronger balanced model without jumping all the way to Opus. Sonnet 5 uses Anthropic's newer tokenizer, and the model picker badge accounts for expected credit use.

Opus 4.6 remains the default Quality model for now while we watch Sonnet 5 on real website-building work.