- Extensions register providers via pendingProviderRegistrations
- These were only applied in bindCore() during AgentSession creation
- But model resolution in main.ts happens before session creation
- Fix: apply pending registrations immediately after loading extensions
- Also fix gitlab-duo to pass Authorization header instead of apiKey
- Delegates to pi-ai's built-in Anthropic/OpenAI streaming
- OAuth support with GitLab's bundled client ID
- Direct access token caching (25 min TTL)
- Models: duo-chat-opus/sonnet/haiku-4-5, duo-chat-gpt-5-1/mini/codex
- No external dependencies beyond pi-ai