refactor(workspace): enforce layered crate boundaries

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

@@ -0,0 +1,8 @@
+use crate::config::ServiceRuntimeConfig;
+use crate::error::RuntimeBootstrapError;
+
+pub fn init_service_runtime(config: ServiceRuntimeConfig) -> Result<(), RuntimeBootstrapError> {
+    crate::tracing::init_tracing(config.clone())?;
+    crate::metrics::init_metrics(config);
+    Ok(())
+}