init: scaffold from k-template with postgres + worker

crates/presentation/src/errors.rs

@@ -0,0 +1,25 @@
+use axum::{http::StatusCode, response::{IntoResponse, Response}, Json};
+use domain::errors::DomainError;
+use serde_json::json;
+
+pub struct AppError(DomainError);
+
+impl From<DomainError> for AppError {
+    fn from(e: DomainError) -> Self { Self(e) }
+}
+
+impl IntoResponse for AppError {
+    fn into_response(self) -> Response {
+        let (status, message) = match &self.0 {
+            DomainError::NotFound(msg) => (StatusCode::NOT_FOUND, msg.clone()),
+            DomainError::Conflict(msg) => (StatusCode::CONFLICT, msg.clone()),
+            DomainError::Unauthorized(msg) => (StatusCode::UNAUTHORIZED, msg.clone()),
+            DomainError::Validation(msg) => (StatusCode::UNPROCESSABLE_ENTITY, msg.clone()),
+            DomainError::Internal(msg) => {
+                tracing::error!("Internal error: {msg}");
+                (StatusCode::INTERNAL_SERVER_ERROR, "Internal server error".to_string())
+            }
+        };
+        (status, Json(json!({ "error": message }))).into_response()
+    }
+}