Backend:
- Server-side HTML email templates (receipt + estimate) with inline CSS
- POST /v1/transactions/:id/email-receipt with per-transaction rate limiting
- POST /v1/repair-tickets/:id/email-estimate with per-ticket rate limiting
- customerEmail field added to receipt and ticket detail responses
- Test email provider for API tests (logs instead of sending)
Frontend:
- POS payment dialog Email button enabled with inline email input
- Pre-fills customer email from linked account
- Repair ticket detail page has Email Estimate button with dialog
- Pre-fills from account email
Tests:
- 12 unit tests for email template renderers
- 8 API tests for email receipt/estimate endpoints and validation
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- app_settings table with encrypted field support (AES-256-GCM, key from ENCRYPTION_KEY env)
- SettingsService for transparent encrypt/decrypt on get/set
- EmailService factory with Resend and SendGrid providers (SMTP stub) — provider config lives in app_settings
- Seeds initial admin user and email settings from env vars on first startup if not already present
- Migration 0039_app_settings.sql
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
