Feature/kitosudv 6135 isms supplier deletion warning

[strongmindsnan]

KITOS Pull request template

Description

Global admins are now warned when trying to delete an organization that is used as ISMS supplier, to avoid deleting ones that are in active use.

Checklist

The following procedure dictates the steps needed before a Pull request can be merged into master.

• Implement:
  All requirements are implemented and unit tests are green

• Merge master into branch / rebase with master:
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• Green on integration:
  All integration tests are green on integration

• Add a description
  Under "Description" above, explain what was changed in this branch, and WHY it was changed

• Request review:
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• Review completed:
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• Changes:
  PR owner and reviewer agrees on which changes must be made and the changes are committed.

• Merge master into branch / rebase with master:
  Make sure you are testing your changes and how they co-exist with the latest version of master

• Green on integration:
  All integration tests are green on integration

[Copilot]

Pull request overview

Moves system-usage “criticality” from the old GDPR enum field to a new option-based model, exposes it through V2 APIs/read models, and adds an internal supplier-usage lookup endpoint. This fits the codebase’s ongoing V2/API + EF Core migration work around system-usage metadata and option types.

Changes:

• Replaces GdprCriticality with SystemUsageCriticalityLevel plus criticality documentation fields across domain, write flow, response mapping, and tests.
• Adds global/local option-type support and external/internal controllers for system-usage criticality levels.
• Adds supplier “using organisations” lookup and updates read models/migrations to surface the new criticality data.

Reviewed changes

Copilot reviewed 52 out of 54 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
Tests.Unit.Presentation.Web/Services/OrganizationSupplierServiceTest.cs	Adds unit coverage for supplier usage lookup.
Tests.Unit.Presentation.Web/Models/V2/ItSystemUsageWriteModelMapperTest.cs	Updates mapper tests for new general-section criticality fields and removed GDPR criticality.
Tests.Unit.Presentation.Web/Models/V2/ItSystemUsageResponseMapperTest.cs	Updates response-mapper assertions for criticality output.
Tests.Unit.Presentation.Web/Authorization/SupplierAssociatedFieldKeyMapperTest.cs	Updates supplier-field key mapping test to new criticality property.
Tests.Unit.Core.ApplicationServices/Model/ItSystemUsageTest.cs	Adds timestamp/documentation tests for criticality-related domain mutations.
Tests.Unit.Core.ApplicationServices/DomainServices/SystemUsage/ItSystemUsageOverviewReadModelUpdateTest.cs	Extends read-model update assertions for criticality level fields.
Tests.Unit.Core.ApplicationServices/ApplicationServices/SystemUsage/ItSystemUsageWriteServiceTest.cs	Adds create-path tests for criticality option handling and removes old GDPR criticality assertions.
Tests.Unit.Core.ApplicationServices/ApplicationServices/SystemUsage/ItSystemUsageServiceTest.cs	Updates permissions test to new criticality field key.
Tests.Integration.Presentation.Web/Tools/External/OptionV2ApiHelper.cs	Adds resource helper constant for criticality option API.
Tests.Integration.Presentation.Web/SystemUsage/V2/ItSystemUsageApiV2Test.cs	Removes old GDPR criticality integration assertion.
Tests.Integration.Presentation.Web/SystemUsage/V2/BaseItSystemUsageApiV2Test.cs	Stops populating removed GDPR criticality request field.
Tests.Integration.Presentation.Web/SystemUsage/ItSystemUsageOverviewReadModelsTest.cs	Updates overview read-model integration test to use criticality option type.
Tests.Integration.Presentation.Web/Organizations/V2/SupplierApiV2Test.cs	Removes old supplier-updatable GDPR criticality from integration test payload.
Presentation.Web/Models/API/V2/Types/SystemUsage/GdprCriticalityChoice.cs	Deletes obsolete external enum type.
Presentation.Web/Models/API/V2/Response/SystemUsage/GeneralDataResponseDTO.cs	Adds general response fields for criticality level and documentation.
Presentation.Web/Models/API/V2/Response/SystemUsage/GDPRRegistrationsResponseDTO.cs	Removes GDPR criticality from GDPR response model.
Presentation.Web/Models/API/V2/Request/SystemUsage/GeneralDataWriteRequestDTO.cs	Adds write-model fields for criticality level selection and documentation link.
Presentation.Web/Models/API/V2/Request/SystemUsage/GDPRWriteRequestDTO.cs	Removes obsolete GDPR criticality request field.
Presentation.Web/Infrastructure/DI/KitosServiceRegistration.cs	Registers services for new global/local criticality option types.
Presentation.Web/Controllers/API/V2/Internal/Organizations/OrganizationSupplierInternalV2Controller.cs	Adds internal endpoint for supplier using-organisations lookup.
Presentation.Web/Controllers/API/V2/Internal/Organizations/OrganizationsInternalV2Controller.cs	Cleans unused imports.
Presentation.Web/Controllers/API/V2/Internal/LocalOptionTypes/ItSystems/ItSystemLocalSystemUsageCriticalityLevelTypesInternalV2Controller.cs	Adds internal local option controller for criticality levels.
Presentation.Web/Controllers/API/V2/Internal/GlobalOptionTypes/ItSystems/ItSystemGlobalGdprCriticalityTypesInternalV2Controller.cs	Adds internal global option controller for criticality levels.
Presentation.Web/Controllers/API/V2/External/ItSystemUsages/Mapping/ItSystemUsageWriteModelMapper.cs	Maps new general criticality fields and removes old GDPR criticality mapping.
Presentation.Web/Controllers/API/V2/External/ItSystemUsages/Mapping/ItSystemUsageResponseMapper.cs	Emits new general criticality fields and drops old GDPR criticality response mapping.
Presentation.Web/Controllers/API/V2/External/ItSystemUsages/Mapping/GdprCriticalityChoiceMappingExtensions.cs	Deletes obsolete enum mapping helpers.
Presentation.Web/Controllers/API/V2/External/ItSystemUsages/ItSystemUsageV2Controller.cs	Cleans unused imports.
Presentation.Web/Controllers/API/V2/External/ItSystemUsages/ItSystemUsageCriticalityLevelTypeV2Controller.cs	Adds external option endpoint for criticality levels.
Presentation.Web/Controllers/API/V1/OData/ItSystemUsageOverviewReadModelsController.cs	Cleans unused imports.
Infrastructure.DataAccess/Migrations/EfCore/KitosContextModelSnapshot.cs	Updates EF Core snapshot for new option type and criticality columns.
Infrastructure.DataAccess/Migrations/EfCore/20260501103523_AddCriticalityLevelName_ToUsageReadModel.cs	Adds follow-up migration for read-model criticality name/documentation columns.
Infrastructure.DataAccess/Migrations/EfCore/20260430052516_MakeSystemUsageCriticalityChoiceType_InsteadOfGdprCriticalityEnum.cs	Main schema migration from enum criticality to option type.
Infrastructure.DataAccess/Mapping/SystemUsageCriticalityLevelMap.cs	Adds EF mapping for the new criticality option entity.
Infrastructure.DataAccess/Mapping/ItSystemUsageOverviewReadModelMap.cs	Replaces old GDPR criticality index with criticality-level UUID index.
Infrastructure.DataAccess/Mapping/ItSystemUsageMap.cs	Adds relation mapping for SystemUsageCriticalityLevel.
Infrastructure.DataAccess/KitosContextSeeder.cs	Seeds sample criticality options.
Infrastructure.DataAccess/KitosContext.cs	Adds DbSets/config for global and local criticality option types.
Core.DomainServices/SystemUsage/ItSystemUsageOverviewReadModelUpdate.cs	Pushes criticality level and documentation into the overview read model.
Core.DomainServices/Suppliers/SupplierFieldDomainService.cs	Repoints supplier-controlled field metadata to new criticality property.
Core.DomainModel/LocalOptions/LocalSystemUsageCriticalityLevel.cs	Adds local-option entity for criticality levels.
Core.DomainModel/ItSystemUsage/Read/ItSystemUsageOverviewReadModel.cs	Replaces old read-model GDPR criticality with new criticality fields.
Core.DomainModel/ItSystemUsage/ItSystemUsage.cs	Replaces old enum field with option reference and documentation fields.
Core.DomainModel/ItSystemUsage/GDPR/GdprCriticality.cs	Deletes obsolete domain enum.
Core.DomainModel/ItSystem/SystemUsageCriticalityLevel.cs	Adds global option entity for system-usage criticality levels.
Core.ApplicationServices/SystemUsage/Write/ItSystemUsageWriteService.cs	Adds write-path support for criticality level/documentation updates.
Core.ApplicationServices/Organizations/Write/OrganizationSupplierService.cs	Adds supplier usage lookup in application service.
Core.ApplicationServices/Organizations/Write/IOrganizationSupplierService.cs	Extends supplier service contract with usage lookup.
Core.ApplicationServices/Model/SystemUsage/Write/UpdatedSystemUsageGeneralProperties.cs	Adds general update parameters for criticality level and documentation.
Core.ApplicationServices/Model/SystemUsage/Write/UpdatedSystemUsageGDPRProperties.cs	Removes old GDPR criticality update parameter.
Core.ApplicationServices/Model/SystemUsage/Write/SystemUsageUpdateParameters.cs	Tracks changed general fields for new criticality properties.
Core.ApplicationServices/Mapping/Authorization/SupplierAssociatedFieldKeyMapper.cs	Updates supplier-field authorization mapping for criticality.
Core.ApplicationServices/Authorization/ModuleFieldsPermissionsResult.cs	Switches permissions lookup to the new criticality field key.