@lunora/cli

Adds transactional email to a Lunora app with the `mail` registry item (`@lunora/mail`). Covers the server-only `internal.mail.sendEmail` / `queueEmail` actions, the `SEND_EMAIL` Cloudflare Email Workers binding, Resend via `RESEND_API_KEY`, `react-email` templates via `renderEmail`, the dev mail catcher (Studio Mail tab), E2E inbox helpers, and inbound mail. Use when the user wants to send verification, password-reset, invite or notification email, runs `lunora add email` or `lunora registry add mail`, edits `lunora/mail/index.ts`, asks why mail isn't delivered or doesn't show up in the Studio, or wants to receive email.