наблюдаемость: ввести безопасный контракт метрик

crates/crank-observability/src/lib.rs

@@ -5,7 +5,6 @@ mod incidents;
 mod instrumentation;
 mod lifecycle;
 mod logging;
-mod metrics_schema;
 mod otlp;
 mod prometheus;
 mod propagation;
@@ -14,6 +13,9 @@ mod schema;
 
 pub use config::{ObservabilityConfig, ObservabilityConfigError, ServiceIdentity};
 pub use correlation::RequestId;
+pub use crank_metrics::{
+    DURATION_BUCKETS_SECONDS, MetricDefinition, MetricKind, MetricUnit, metric_schema,
+};
 pub use error_reporting::{
     CriticalErrorCategory, SentryConfig, SentryConfigError, capture_critical_error,
     with_request_correlation,
@@ -22,9 +24,6 @@ pub use incidents::{OperationalIncident, operational_incident_total, record_oper
 pub use instrumentation::{record_db_pool_connections, record_http_request};
 pub use lifecycle::{ObservabilityInitError, ObservabilityLifecycle, init};
 pub use logging::build_subscriber;
-pub use metrics_schema::{
-    DURATION_BUCKETS_SECONDS, MetricDefinition, MetricKind, MetricUnit, metric_schema,
-};
 pub use otlp::{
     OtlpBatchConfig, OtlpTraceConfig, OtlpTraceConfigError, OtlpTraceError, build_tracer_provider,
 };