Corrected model names (per Google AI docs):
- gemini-2.5-flash-image (was gemini-2.0-flash-preview-image-generation)
- gemini-3-pro-image-preview (Nano Banana Pro)
- gemini-3.1-flash-image-preview (Nano Banana 2)
UI: replaced text input with dropdown selector showing all 3 models
with human-readable descriptions.
Default changed to gemini-2.5-flash-image (fast, high-volume).
AI Assistant: generate_project_cover tool description updated to be
provider-agnostic (works with both DALL-E and Gemini).
Co-Authored-By: claude-flow <ruv@ruv.net>