refactor(workspace): enforce layered crate boundaries

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

@@ -0,0 +1,38 @@
+pub mod admission;
+mod bootstrap;
+pub mod concurrency;
+mod config;
+pub mod distributed;
+mod error;
+pub mod metrics;
+mod observability;
+pub mod queue;
+pub mod redaction;
+pub mod shutdown;
+pub mod task;
+mod tracing;
+
+pub use admission::{
+    hold_admission_permit_until, maybe_hold_axum_response_permit, AdmissionPermit,
+    AdmissionPermitHealth,
+};
+pub use bootstrap::init_service_runtime;
+pub use concurrency::{ConcurrencyError, ConcurrencyGate, ConcurrencyPermit, ConcurrencySnapshot};
+pub use config::ServiceRuntimeConfig;
+pub use distributed::{
+    DistributedConcurrencyError, DistributedConcurrencyGate, DistributedConcurrencyPermit,
+    DistributedConcurrencySnapshot,
+};
+pub use error::RuntimeBootstrapError;
+pub use metrics::{prometheus_response, service_up_sample, MetricKind, MetricLabel, MetricSample};
+pub use observability::{
+    FileLoggingConfig, LogDestination, LogRotation, ServiceObservabilityConfig,
+};
+pub use queue::{
+    bounded_queue, BoundedQueueReceiver, BoundedQueueSender, QueueSendError, QueueSnapshot,
+};
+pub use redaction::{summarize_text_payload, TextPayloadSummary};
+pub use shutdown::wait_for_shutdown_signal;
+pub use tracing::{
+    init_reloadable_service_tracing, init_reloadable_tracing, LogFormat, LogReloader,
+};