- API (api/src/auth.ts): scrypt password hashes; random session tokens stored only as SHA-256;
30-day sliding sessions; rate limits on sign-in (per IP and per email) and sign-up; changing the
password signs out other devices; deleting the account removes its data.
- Site: /signup, /signin (returns to the page the reader came from), /account; header link; plain
forms, no JavaScript needed. Session in an HTTP-only, SameSite=Lax cookie (Secure over HTTPS).
- CSRF: Astro's origin check, with the site's hostnames listed (SITE_HOSTS) so its own form posts
pass and other sites' are refused.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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