Added OpenAI Responses API as a new custom provider type, wiring `apiType: "responses"` through the core registry, engine routes, and dashboard UI with a dropdown selector; includes test coverage across the registry, routes, and component layers.
Fusion-Task-Id: FN-5601
Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
Fusion-Task-Id: FN-5601
Add 'Detect Models' button to custom provider forms that calls the
provider's /models endpoint to discover available models automatically.
- Supports OpenAI-compatible, Anthropic-compatible, and Google
Generative AI providers
- Auto-fills context window and max tokens from provider response
- Filters out embedding, reranking, and non-text models
- Removes empty default model rows after detection
- Added comprehensive backend and frontend test coverage
Merged v0.9.4 bringing custom AI providers to the dashboard — SettingsModal now surfaces provider configuration with an onboarding disclosure flow, backed by new API routes (`/custom-providers`) and comprehensive test coverage. The engine adds self-healing with a ghost-review fallback recovery path,
Fusion-Task-Id: FN-2965
