feat: Migrate models to entities

[HE-LU]

• Migrate all models to entities
• Cleanup the code

[Copilot]

Pull Request Overview

This PR migrates the data layer architecture from "models" to "entities", updating import paths and class names throughout the codebase to follow a more domain-driven design pattern.

• Renames all model classes to entity classes (e.g., UserModel → UserEntity)
• Updates all import statements from model/ to entity/ directories
• Introduces extension methods on DTOs to convert to entities, removing factory methods from entity classes
• Updates code generation configuration and documentation to reflect the new naming convention

Reviewed Changes

Copilot reviewed 40 out of 44 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
project_setup/lib/core/splash_screen_generator.dart	Updated import path from model to entity
project_setup/lib/core/model/app_icon_variant_model.dart	Updated import path from model to entity
project_setup/lib/core/app_icon_generator.dart	Updated import paths from model to entity
project_setup/lib/configuration.dart	Updated import paths from model to entity
lib/features/profile/profile_state.dart	Updated imports and provider references
lib/features/landing/landing_page.dart	Updated provider reference from model to entity
lib/features/debug_tools/page/text_styles/debug_tools_text_styles_page_content.dart	Updated import path from model to entity
lib/features/debug_tools/page/colors/debug_tools_colors_page_content.dart	Updated import path from model to entity
lib/features/authentication/authentication_state.dart	Updated imports and type annotations
lib/core/analytics/analytics_manager.dart	Updated imports and function parameters
lib/common/validator/text_field_validator_state.dart	Updated exception import path
lib/common/validator/controller/text_validator_controller_general.dart	Updated exception import path
lib/common/usecase/user/set_database_user_use_case.dart	Updated imports and parameters
lib/common/usecase/user/get_database_user_use_case.dart	Updated imports, return types, and logging
lib/common/usecase/user/get_current_user_use_case.dart	Updated imports and method call
lib/common/usecase/authentication/*.dart	Updated imports and return types across authentication use cases
lib/common/provider/*.dart	Updated imports and class names for providers
lib/common/data/model/user_model.dart	Deleted original model file
lib/common/data/entity/user_entity.dart	Created new entity file with simplified structure
lib/common/data/entity/notification_payload_entity.dart	Updated part file references
lib/common/data/dto/user_response_dto.dart	Added extension method for entity conversion
lib/common/extension/*.dart	Updated exception import paths
lib/common/composition/placeholder/error_placeholder_widget.dart	Updated exception import path
Configuration files	Updated build configuration, workspace settings, and documentation
Templates	Removed model templates and added entity templates

Comments suppressed due to low confidence (2)

lib/common/data/entity/notification_payload_entity.dart:4

• The part file reference still points to the old 'notification_payload_model.freezed.dart' instead of 'notification_payload_entity.freezed.dart'. This will cause code generation to fail.

part 'notification_payload_entity.freezed.dart';

lib/common/data/entity/notification_payload_entity.dart:5

• The part file reference still points to the old 'notification_payload_model.g.dart' instead of 'notification_payload_entity.g.dart'. This will cause code generation to fail.

part 'notification_payload_entity.g.dart';