The email-api service was missing its configuration file, which is required
for Serilog logging setup, database connection, and SMTP settings.
Created appsettings.json with:
- Serilog configuration for console, file, and email logging
- Database connection settings
- SMTP configuration for email sending
- Internal API key configuration
- File storage path configuration
This fixes the container crash loop caused by missing configuration.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
