Analogous to internal/provider, extract the service registry (Svc,
RegisterService, FindService, ListServices, OrderedServices, FindSubService,
RegisterSubServices) and the zone analyzer (ServiceAnalyzer, Analyzer,
AnalyzeZone) from services/ into a new internal/service package.
Implement backend-driven service initialization to replace hazardous
frontend initialization logic. Services can now provide custom
initialization via ServiceInitializer interface or get sensible
defaults automatically.
- Moved usecases into internal/usecase
- Renamed internal/utils to internal/helpers for better naming semantics
- Clarified separation between domain model, usecases, adapters, and web/API
