Gemini 3.8 Flash Support
- Added support for the new stable gemini-3.8-flash model.
- Made Gemini 3.8 Flash the recommended model for both free and paid API plans.
- Set Gemini 3.8 Flash as the default model for paid plans.
- Automatically migrate existing Gemini 3.7 Flash selections to Gemini 3.8 Flash.
- Updated thinking, Google Search, function calling, PDF input, and cost tracking support.