- delete TajikGanjoor project (removed from solution)
- drop Tajik endpoints/services/DTOs/entities; migration DivanRemoveTajik drops their tables
- remove Tajik admin buttons/handlers and appsettings sections
- README is now Divan's; upstream README kept in docs/GANJOOR-README.md
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
