Add configurable SMTP service for sending signature reminder emails.
Features:
- Configurable via ACKIFY_MAIL_* environment variables
- Multilingual templates (en/fr) with HTML + text versions
- Template rendering with automatic variable injection
- Graceful degradation when SMTP not configured
- TLS/STARTTLS support with configurable timeout
- MailHog integration for local testing
Add comprehensive internationalization support:
- Browser language detection via Accept-Language header
- Cookie-based language preference persistence (1 year)
- Language switcher with flag emojis (🇫🇷🇬🇧)
- 71 translation keys covering all UI elements
- Context-based translation injection via middleware
Replace Tailwind CDN with production build:
- Tailwind CLI v3.4.16 for CSS compilation
- Minified CSS output (5.9KB from several MB)
- Docker build integration
- Custom color palette configuration
Update all templates with i18n support:
- Main pages: home, sign, signatures, error
- Admin dashboard and document details
- Embed iframe widget (English only for international use)
- Language switcher preserves current page URL
Technical implementation:
- golang.org/x/text for language matching
- Middleware pattern for consistent i18n injection
- Fallback chain: Cookie → Accept-Language → English
- Separate translation files (locales/fr.json, locales/en.json)
- Move web server logic to pkg/web package for external imports
- Rename cmd/ackify to cmd/community for clarity
- Create NewServer(multitenant bool) function for EE integration
- Add basic unit tests for Community Edition
- Update Dockerfile to build from cmd/community
- Add comprehensive build and deployment documentation
This change enables the Enterprise Edition to import and extend
the Community Edition while maintaining clean separation.
Add complete Go application for cryptographic document signature validation with OAuth2 authentication, Ed25519 signatures, and PostgreSQL storage following clean architecture principles.
