Register users and authenticate with magic links using Google Sheets

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This workflow implements a lightweight authentication system for n8n web portals using Google Sheets as a simple user and session store. It supports email-based registration, username and password login, one-click magic link authentication, and cookie-based session management. How it works Users register with an email address through a form. The workflow generates a password and a one-time authentication token. User credentials and token are stored in Google Sheets. An email is sent with login