- Added two sample `ProfileObject` instances to the static `Default` Profile
- Includes object metadata like ObjStateId, ObjectId, headlines, and sublines
- Enhances the default response of `GET /api/profile` for testing/demo purposes
- Removed dependency on IUnique<int> interface
- Removed validation and database annotations like [Required], [Key]
- Renamed/updated column mappings and replaced required fields with nullable types
- Removed metadata fields such as AddedWho, AddedWhen, ChangedWho, ChangedWhen, etc.
- Cleaned up namespace and using directives