Features:
- Add SHA256 column to admin product versions table
- Display file hash in customer account downloads section
- Style checksum file upload field consistently with package upload
Changes:
- Admin versions table shows truncated hash with full hash on hover
- Customer downloads show hash with shield icon indicator
- Updated German translations
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add complete plugin infrastructure for selling software with license keys:
- New "Licensed Product" WooCommerce product type
- License key generation (XXXX-XXXX-XXXX-XXXX format) on order completion
- Domain-based license validation system
- REST API endpoints (validate, status, activate, deactivate)
- Customer My Account "Licenses" page
- Admin license management under WooCommerce > Licenses
- Checkout domain field for licensed products
- Custom database tables for licenses and product versions
- Twig template engine integration
- Full i18n support with German (de_CH) translation
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>