Removes session/passport middleware and configures cookie settings with `sameSite: 'lax'` in `server/routes.ts`. Replit-Commit-Author: Agent Replit-Commit-Session-Id: 8fac8604-8776-4090-bf16-1e3d01acb719 Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/9777c70b-fc38-4831-8d6b-78dfffe041b0/1c7d1edb-17da-4794-ab01-57bc59240867.jpg