refactor(workspace): enforce layered crate boundaries

crates/aether-runtime/base/src/task.rs

@@ -0,0 +1,12 @@
+use std::future::Future;
+
+pub fn spawn_named<F>(task_name: &'static str, future: F) -> tokio::task::JoinHandle<F::Output>
+where
+    F: Future + Send + 'static,
+    F::Output: Send + 'static,
+{
+    tokio::spawn(async move {
+        tracing::debug!(task = task_name, "spawned runtime task");
+        future.await
+    })
+}