- Introduce Madhhab model with multilingual title, description, and slug
- Link madhhabs relation (ManyToMany) to Transmitters
- Add migration 0062 to create table and populate from existing madhab JSON data
- Register DovodiMadhhabViewSet and admin routes in urls.py
- Update RELATIONAL_MIGRATION_ROADMAP.md for madhhab migration
- Add SahabiStatus model with multilingual title, description, and slug
- Add ForeignKey sahabi_status to Transmitters model
- Create migration 0061 to create SahabiStatus and populate from existing companion_type
- Register DovodiSahabiStatusViewSet and admin routes in urls.py
- Update RELATIONAL_MIGRATION_ROADMAP.md for sahabi_status migration
- Introduce TransmitterFeature model with title, slug, and timestamps
- Link features relation to Transmitters and BookAuthors
- Add DovodiTransmitterFeatureViewSet and register routes in admin router
- Add migration 0060 to create table and populate from existing features data
- Update RELATIONAL_MIGRATION_ROADMAP.md with completed features migration