feat(auth): implement user authentication and email verification

Add registration, login, and logout flows with session management
Integrate Resend for email verification tokens
Create frontend auth views and update topbar state

docker-compose.yml

@@ -22,6 +22,9 @@ services:
       DATABASE_URL: postgres://pokopia:pokopia@postgres:5432/pokopia
       BACKEND_PORT: 3001
       FRONTEND_ORIGIN: http://localhost:3000
+      APP_ORIGIN: http://localhost:3000
+      RESEND_API_KEY: ${RESEND_API_KEY:-}
+      EMAIL_FROM: "${EMAIL_FROM:-Pokopia Wiki <onboarding@resend.dev>}"
     ports:
       - "3001:3001"
     depends_on: