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-iam/src/roles/domain/repository.rs

@@ -0,0 +1,15 @@
+use async_trait::async_trait;
+use paginator_rs::PaginationParams;
+use paginator_utils::PaginatorResponse;
+use imphnen_utils::AppError;
+use super::role::RoleEntity;
+
+#[async_trait]
+pub trait RoleRepository: Send + Sync {
+    async fn find_all(&self, params: PaginationParams) -> Result<PaginatorResponse<RoleEntity>, AppError>;
+    async fn find_by_id(&self, id: String) -> Result<RoleEntity, AppError>;
+    async fn find_by_name(&self, name: String) -> Result<RoleEntity, AppError>;
+    async fn create(&self, entity: RoleEntity) -> Result<RoleEntity, AppError>;
+    async fn update(&self, id: String, name: Option<String>, permissions: Option<Vec<String>>) -> Result<String, AppError>;
+    async fn delete(&self, id: String) -> Result<String, AppError>;
+}