Replace AutoMapper with Riok.Mapperly in TeachingRecordSystem.Api

[Copilot]

Replaces runtime reflection-based AutoMapper with source-generator-based Riok.Mapperly (4.3.1) across all 12 API version namespaces, eliminating the IMapper abstraction in favour of strongly-typed per-version ApiMapper classes.

Package changes

• Directory.Packages.props: swap AutoMapper → Riok.Mapperly 4.3.1
• TeachingRecordSystem.Api.csproj: update <PackageReference> accordingly

Per-version ApiMapper classes (×12)

One ApiMapper per version namespace (V20240101–V20250627). Complex mappings involving Option<T> / OneOf<> are written manually; flat mappings use Mapperly [Mapper] partial methods with [MapProperty] for renames. Key notes:

• DqtInductionStatus enum conversion is name-based (not value-based) — values differ by 1 between Implementation.Dtos and V20240101.Dtos
• Separate MapFindPersonResponseResult / MapFindPersonsResponseResult methods per version where both response shapes exist
• TrainingAgeSpecialismType cast uses (int) intermediary since values are identical across namespaces

Controllers (all affected versions)

IMapper mapper → typed ApiMapper mapper in primary constructors; mapper.Map<T>(x) → mapper.MapX(x).

Infrastructure

• Extensions.cs: remove AddAutoMapper() + ITypeConverter<,> Scrutor scan; add AddSingleton<VXX.ApiMapper>() for all 12 versions
• GlobalUsings.cs: remove global using AutoMapper;
• Deleted: all 11 MapperProfile.cs files, Infrastructure/Mapping/OptionMapper.cs
• Response DTOs: strip all [AutoMap] / [SourceMember] attributes and their using AutoMapper.Configuration.Annotations; directives (~23 files)

Checklist

• Attach to Trello card
• Rebased master
• Cleaned commit history
• Tested by running locally