Capture an email address, then redirect straight to the handbook PDF
Backs the plain-HTML-form download at docs/site/handbook/download.mdx — a GET so a <form method="get"> with no client-side JavaScript can submit it directly, since the docs site host may sandbox or strip inline <script> tags. Deliberately mounted before this app’s caller-auth middleware, see packages/api/src/app.ts: a visitor downloading the handbook has no Parmana credential yet. Records the email address; does not send a verification email, see migration 20260916150000_add_handbook_download_leads.sql’s own comment for why that is a deliberate scope boundary, not an oversight.
Query Parameters
Response
Email captured. Redirects to the static PDF file on the docs site's own domain.