- Add CopilotAdapter with OAuth2 device flow authentication
- Token exchange via /copilot_internal/v2/token with caching
- Premium request multiplier system (getCopilotMultiplier)
- Full model metadata catalog (COPILOT_MODELS)
- Add 'copilot' to SupportedProvider and provider union types
- Add example: examples/05-copilot-test.ts
Deathwing