Welcome email on user creation: createAlumnoWithUser (and other create-user surfaces) sends Spanish welcome email via existing nodemailer mailer.ts; fire-and-forget, graceful no-op if SMTP not configured

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• system created · 2026-05-07
  wi cli
• system completed · 2026-05-07
  shipped v1.81.0 / 8fb0165 — 3 create-user surfaces wired with fire-and-forget welcome email