phsl / new-api

This commit updates the quick-fill endpoint templates used in the model and pre-fill group editors:

• `EditModelModal.jsx`
• `EditPrefillGroupModal.jsx`

Key changes
1. Added missing default endpoints defined in `common/endpoint_defaults.go`.
   - `openai-response`
   - `gemini`
   - `jina-rerank`
2. Ensured each template entry includes both `path` and `method` for clarity.

Benefits
• Provides one-click access to every built-in upstream endpoint, reducing manual input.
• Keeps the UI definitions in sync with backend defaults, preventing mismatch errors.