frontend-auth-session-routing

name	frontend-auth-session-routing
description	Use when changing sign-in, sign-up, logout, session bootstrap, refresh, OAuth callback flow, protected routes, guest-only routes, cookie handling, or any frontend auth behavior in Iced Latte Frontend.

Frontend Auth Session Routing

This repo uses cookie-backed auth with HttpOnly tokens stored through Next.js server surfaces.

Read Order

1. AGENTS.md
2. docs/AUTH.md
3. The smallest relevant file under:
   • src/features/auth
   • src/features/session
   • src/shared/auth
   • src/app/providers/AuthInterceptor.tsx
   • src/app/api/

Hard Rules

• Raw access and refresh tokens must not be stored in JavaScript-readable client state.
• Treat React auth state as a UI view of the backend-confirmed session, not as source of truth.
• Preserve callback, cookie, refresh, and ?next= route behavior unless the task explicitly changes the contract.
• For Google OAuth work, keep the browser callback limited to the one-time handoff code flow described in docs/AUTH.md.

Verification

1. Run the smallest relevant unit or route test first.
2. For user-flow changes, run the narrowest relevant Playwright spec.
3. Broaden to npm run test:e2e:local only when the auth change affects multiple journeys.