fix(persistence): Fix Identity DbContext Interceptor Loop & Universal Auditing

[cesarcastrocuba]

[Fix]: Fix Identity DbContext Interceptor Loop & Universal Auditing

Description

This PR addresses the StackOverflowException reported in Issue #15 by implementing a centralized audit interceptor in the Building Blocks. It includes a robust recursion guard to prevent infinite loops during the SaveChanges pipeline.

Key Changes

• AuditableEntitySaveChangesInterceptor: Added to BuildingBlocks/Persistence. This interceptor automates:
  • Auditing: Automatically populates CreatedOnUtc, CreatedBy, LastModifiedOnUtc, and LastModifiedBy for entities implementing IAuditableEntity.
  • Soft Delete: Manages soft deletion for ISoftDeletable entities, transforming Delete operations into Update with the corresponding metadata.
  • Recursion Guard: Utilizes a [ThreadStatic] flag to detect nested SaveChanges calls, effectively preventing stack overflow errors.
• Global Registration: Updated PersistenceExtensions.cs to register this and other interceptors (DomainEventsInterceptor) globally for any DbContext using the AddHeroDbContext extension.

Benefits

• Robustness: Eliminates the technical risk of infinite loops within the Entity Framework pipeline.
• Cleaner Code: Removes the need for manual assignments of audit metadata (creation/modification dates and users) in domain models/handlers.
• System-wide Consistency: Ensures a uniform pattern for metadata and soft deletion across all modules.

Verification

• Logic validated via unit tests covering insertion, modification, soft delete, and recursion scenarios.
• dotnet build completed successfully (0 errors).
• dotnet test verified for Generic.Tests (43 passing tests).