refactor: migrate to clean architecture with trait-based DI (v0.2.0)

Complete architectural overhaul across all 12 crates:

- Replace validator crate with zod-rs for all DTO validation
- Replace manual pagination with paginator-rs/paginator-sea-orm
- Migrate all modules (iam, cms, gacha, dimentorin) to clean architecture:
  domain → application → infrastructure layers
- Introduce trait-based DI (Arc<dyn Trait>) at every layer for repositories and services
- Delete all v1/ legacy SurrealDB-era code across every crate
- Replace opaque response helpers with typed IntoResponse structs (ApiSuccess, ApiCreated, ApiPaginated, ApiMessage)
- Remove dual_mode_repository, migration_validation_errors, validator.rs dead code
- Zero cargo clippy warnings; release build clean

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

imphnen-cms/src/testimonials/domain/mod.rs

@@ -0,0 +1,7 @@
+pub mod testimonial;
+pub mod repository;
+pub mod service;
+
+pub use testimonial::TestimonialEntity;
+pub use repository::TestimonialRepository;
+pub use service::TestimonialService;

imphnen-cms/src/testimonials/domain/repository.rs

@@ -0,0 +1,15 @@
+use async_trait::async_trait;
+use paginator_rs::PaginationParams;
+use paginator_utils::PaginatorResponse;
+use uuid::Uuid;
+use imphnen_utils::AppError;
+use super::testimonial::TestimonialEntity;
+
+#[async_trait]
+pub trait TestimonialRepository: Send + Sync {
+    async fn find_all(&self, params: PaginationParams) -> Result<PaginatorResponse<TestimonialEntity>, AppError>;
+    async fn find_by_id(&self, id: Uuid) -> Result<TestimonialEntity, AppError>;
+    async fn create(&self, entity: TestimonialEntity) -> Result<TestimonialEntity, AppError>;
+    async fn update(&self, entity: TestimonialEntity) -> Result<(), AppError>;
+    async fn delete(&self, id: Uuid) -> Result<(), AppError>;
+}

imphnen-cms/src/testimonials/domain/service.rs

@@ -0,0 +1,15 @@
+use async_trait::async_trait;
+use paginator_rs::PaginationParams;
+use paginator_utils::PaginatorResponse;
+use uuid::Uuid;
+use imphnen_utils::AppError;
+use super::testimonial::TestimonialEntity;
+
+#[async_trait]
+pub trait TestimonialService: Send + Sync {
+    async fn list(&self, params: PaginationParams) -> Result<PaginatorResponse<TestimonialEntity>, AppError>;
+    async fn get(&self, id: Uuid) -> Result<TestimonialEntity, AppError>;
+    async fn create(&self, entity: TestimonialEntity) -> Result<TestimonialEntity, AppError>;
+    async fn update(&self, entity: TestimonialEntity) -> Result<(), AppError>;
+    async fn delete(&self, id: Uuid) -> Result<(), AppError>;
+}

imphnen-cms/src/testimonials/domain/testimonial.rs

@@ -0,0 +1,13 @@
+use uuid::Uuid;
+
+#[derive(Clone, Debug)]
+pub struct TestimonialEntity {
+    pub id: Uuid,
+    pub user_id: Uuid,
+    pub user_fullname: String,
+    pub role: String,
+    pub content: String,
+    pub is_deleted: bool,
+    pub created_at: String,
+    pub updated_at: String,
+}