domain: add cross-cutting value objects (SystemId, DateTimeStamp, Checksum, StructuredData)

crates/presentation/src/extractors/auth.rs

@@ -4,13 +4,13 @@ use axum::{
     response::{IntoResponse, Response},
     Json,
 };
-use domain::value_objects::{Role, UserId};
+use domain::value_objects::SystemId;
 use serde_json::json;
 use crate::state::AppState;
 
 pub struct JwtClaims {
-    pub user_id: UserId,
-    pub role: Role,
+    pub user_id: SystemId,
+    pub role: String,
 }
 
 impl FromRequestParts<AppState> for JwtClaims {

crates/presentation/src/handlers/auth.rs

@@ -19,7 +19,7 @@ pub async fn register(
     ValidatedJson(req): ValidatedJson<RegisterRequest>,
 ) -> Result<(StatusCode, Json<AuthResponse>), AppError> {
     let user = state.register_uc.execute(&req.email, &req.password).await?;
-    let token = state.token_issuer.issue(&user.id, &user.role).await.map_err(AppError::from)?;
+    let token = state.token_issuer.issue(&user.id, "user").await.map_err(AppError::from)?;
     Ok((StatusCode::CREATED, Json(AuthResponse { token, user: UserResponse::from_domain(&user) })))
 }