The desktop app now has a dedicated OpenAI OAuth API client and store mirroring the existing Claude Official flow. The component uses the existing browser-open plus polling pattern and never exposes token material to the UI.
Constraint: OAuth status responses must not return token bodies
Rejected: Reuse Claude OAuth store | the status shape and endpoint differ
Confidence: high
Scope-risk: narrow
Tested: cd desktop && bun run test -- src/stores/hahaOpenAIOAuthStore.test.ts
Tested: git diff --check
