Major refactor of AdminController and related services to support full CRUD for candidate resume, projects, hobbies, skills, academics, experiences, certifications, and contact info, all using access token claims for candidate identity. Introduced AdminService and expanded IResumeRepository for granular entity management. Updated DTOs for upsert operations and date support. Improved API versioning (Asp.Versioning.Mvc), Swagger integration, and middleware setup. Added unit test project. Enhanced error handling, documentation, and mapping.
Upgraded projects to .NET 9.0 and added new projects `KBR.Cache`, `KBR.Shared`, and `KBR.Shared.Lite` to the solution. Introduced JWT authentication and OTP handling with new models, services, and configuration options. Updated database schema with new entities `Users` and `RefreshTokens`, and added migrations for schema changes. Implemented caching strategies using `AppDistributedCache` with support for in-memory, SQL Server, and Redis. Enhanced email handling with `MailHelpers` for domain replacement. Updated controllers, repositories, and configuration files to support new features.