[Refactor] With DDD

[nkcoder]

What

Split into user and auth domain using DDD pattern.

[Copilot]

Pull request overview

This PR refactors the application from a layered architecture to Domain-Driven Design (DDD), splitting functionality into two bounded contexts: auth and user. This represents a significant architectural improvement that better separates concerns and prepares the codebase for potential microservice extraction.

Key Changes:

• Introduced DDD tactical patterns with domain/application/infrastructure/interfaces layers
• Split into auth and user bounded contexts with separate domain models
• Created a shared kernel for common value objects (Email, domain events)
• Implemented CQRS-style separation with UserQueryService and UserCommandService
• Added domain events for cross-context communication (UserRegisteredEvent, UserLoggedInEvent)

Reviewed changes

Copilot reviewed 132 out of 133 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
auth/domain/model/*	Auth bounded context domain models (AuthUser, RefreshToken, TokenFamily, etc.)
auth/application/service/*	Auth application services orchestrating authentication flows
auth/infrastructure/*	Persistence adapters, security implementations (JWT, BCrypt)
auth/interfaces/rest/*	REST controllers and request/response DTOs for auth endpoints
user/domain/model/*	User bounded context domain models (User, UserId, UserName, UserRole)
user/application/service/*	User query and command services with CQRS separation
user/infrastructure/*	User persistence adapters and auth context integration
user/interfaces/rest/*	User and admin user REST controllers
shared/kernel/*	Shared value objects (Email), domain events, and exception hierarchy
infrastructure/*	Cross-cutting concerns (security filters, config, resolvers)
test/**	Comprehensive test structure mirroring the domain organization
build.gradle.kts	Updated Jacoco exclusions to match new DDD structure

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