- Add English email template variants (greeting, message, closing, subject, CTA copy)
- Add `preferred_lang` column to `pitch_investors` — stored per investor, deck opens in that language by default
- Invite form: DE/EN language toggle that switches email defaults and pitch language setting
- Invite form: "Send email" toggle — when off, creates investor + returns magic link without sending email (for cold outreach attachment)
- `app/page.tsx`: initializes pitch language from investor's `preferred_lang` before first render (no flash)
- Migration 007 added to `/api/admin/migrate` route for production rollout
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Client component (investors/new page) imported DEFAULT_MESSAGE etc. from
lib/email.ts which also top-level initialises nodemailer — webpack tried
to bundle fs/net/dns into the client chunk and failed.
Extract the pure constants + getDefaultGreeting into lib/email-templates.ts
(client-safe), keep nodemailer in lib/email.ts (server-only), update the
page to import from email-templates.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>