## Twenty for Twenty: Resend module
Introduces `packages/twenty-apps/internal/twenty-for-twenty`, the
official internal Twenty app, with a first module integrating
[Resend](https://resend.com).
### Breakdown
**Resend module** (`src/modules/resend/`)
- Two app variables: `RESEND_API_KEY` and `RESEND_WEBHOOK_SECRET`.
- **Objects**: `resendContact`, `resendSegment`, `resendTemplate`,
`resendBroadcast`, `resendEmail`, with relations between them and to
standard `person`.
- **Inbound sync (Resend → Twenty)**:
- Cron-driven logic function `sync-resend-data` (every 5 min) pulling
all entities through paginated, rate-limit-aware utilities
(`sync-contacts`, `sync-segments`, `sync-templates`, `sync-broadcasts`,
`sync-emails`).
- Webhook endpoint (`resend-webhook`) verifying signatures and handling
`contact.*` and `email.*` events in real time.
- `find-or-create-person` auto-links Resend contacts to Twenty people by
email.
- **Outbound sync (Twenty → Resend)**: DB-event logic functions for
`contact.created/updated/deleted` and `segment.created/deleted`, with a
`lastSyncedFromResend` field for loop prevention.
- **UI**: views, page layouts, navigation menu items, and front
components (`HtmlPreview`, `RecordHtmlViewer`) to preview email/template
HTML in record pages; `sync-resend-data` command exposed as a front
component.
### Setup
See the new README for install steps, webhook configuration, and local
testing with the Resend CLI.
