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Secret hygiene, CSP, CSRF, webhook HMAC, session encryption.
How to move an app component into the headless @jasonyangcis/core-ui library — headless conversion, cross-repo file checklist, treeshake sentinel, changeset, consumer wiring.
How to wire a new Builder.io-rendered route or model — fetch helper, route, registry, config.
Pattern for adding a server Route Handler under app/api/** — origin check, zod body, server-only deps, safe responses.
Builder.io Gen-2 SDK patterns — fetch, render, register, model guard, preview.
Tokens, cn(), focus rings, shadcn/ui (new-york), insert-menu groups.
TS strict, four-file folder pattern, import boundaries, no console.
| name | security |
| description | Secret hygiene, CSP, CSRF, webhook HMAC, session encryption. |
NEXT_PUBLIC_* reaches the browser.lib/env.ts (zod). Boot fails on invalid envs.Origin matches APP_ORIGIN via verifySameOrigin.crypto.timingSafeEqual on the raw body.HttpOnly, Secure (prod), SameSite=Lax, signed/encrypted with SESSION_SECRET./preview. Headers set in proxy.ts.utils/sanitize-html.ts. No dangerouslySetInnerHTML outside that helper.