Activating the built-in ChatGPT provider now writes a dedicated OpenAI OAuth runtime environment instead of clearing provider state. The runtime points the CLI at the desktop-managed OpenAI token file, avoids Anthropic auth/base-url variables, reports auth from the OpenAI token file, and prevents Claude OAuth injection when ChatGPT Official is active.
Constraint: Default provider sessions read cc-haha managed settings, while session-scoped provider selections inject env directly from the desktop host.
Rejected: Treat ChatGPT Official as a generic OpenAI proxy provider | proxy routing would require API-key shaped auth and would leak it into the wrong runtime path.
Confidence: high
Scope-risk: moderate
Tested: bun test src/server/__tests__/providers.test.ts
Tested: bun test src/server/__tests__/conversation-service.test.ts
Tested: bun test src/services/openaiAuth/storage.test.ts src/server/__tests__/haha-openai-oauth-service.test.ts src/server/__tests__/haha-openai-oauth-api.test.ts
Tested: git diff --check
9a11f35bcd