Covers data model, backend threading through registry/image/imageToPdf/worker, frontend controls, validation, and testing for a new quality/compressionLevel option on image conversions. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Covers architecture, MariaDB job model, conversion registry pattern, o2switch deployment (Passenger + pm2 worker + cron cleanup), and anti-abuse/error-handling strategy. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>