feat(dimentorin): materials module (CRUD konten mentoring, public+protected routes)

- app_materials table: mentor_id, title, slug, category, description, content
- domain/application/infrastructure pola articles: repo postgres, service, DTO ZodValidate
- routes: GET /materials (public, published only), GET /materials/{id|slug|categories}, POST/PUT/DELETE (auth, author-only)
- verified e2e: create 3 materi sebagai mentor, list, slug, categories

imphnen-entities/src/seaorm/common/materials.rs

@@ -0,0 +1,37 @@
+use chrono::{DateTime, Utc};
+use sea_orm::entity::prelude::*;
+use uuid::Uuid;
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel)]
+#[sea_orm(table_name = "app_materials")]
+pub struct Model {
+	#[sea_orm(primary_key, default = "gen_random_uuid()", auto_increment = false)]
+	pub id: Uuid,
+
+	#[sea_orm(indexed)]
+	pub mentor_id: Uuid,
+
+	pub title: String,
+
+	pub slug: String,
+
+	pub category: String,
+
+	pub description: String,
+
+	pub content: String,
+
+	#[sea_orm(nullable)]
+	pub cover_url: Option<String>,
+
+	pub is_published: bool,
+
+	pub created_at: DateTime<Utc>,
+
+	pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {}
+
+impl ActiveModelBehavior for ActiveModel {}

imphnen-entities/src/seaorm/common/mod.rs

@@ -3,6 +3,7 @@ pub mod audit_log;
 pub mod enum_impls;
 pub mod enums;
 pub mod events;
+pub mod materials;
 pub mod otp_cache;
 pub mod payments;
 pub mod rate_limit;