- Remove render-time fallback to module store (auth-session) for roles
- Consolidate login/refresh/clear logic into reusable helpers
- Prevent UI logout flicker on transient /auth/userinfo failures
- Add test to verify module store changes don't pollute provider state
Refs: review-fix-closure-2026-05-28 AuthProvider state convergence
P1-02: OAuth ExchangeCode and GetUserInfo now accept context parameter
to properly propagate request context to HTTP calls
P1-16: AuthProvider isAuthenticated now uses single source of truth
(effectiveUser !== null) instead of double-checking both
React state and module-level function