наблюдаемость: завершить базовый контур Community

Добавить структурированные журналы, метрики, трассировку и безопасный канал критических ошибок. Усилить границы рантайма, тесты, проверку зависимостей и сценарии развёртывания.

crates/crank-observability/src/lib.rs

@@ -0,0 +1,37 @@
+mod config;
+mod correlation;
+mod error_reporting;
+mod incidents;
+mod instrumentation;
+mod lifecycle;
+mod logging;
+mod metrics_schema;
+mod otlp;
+mod prometheus;
+mod propagation;
+mod redaction;
+mod schema;
+
+pub use config::{ObservabilityConfig, ObservabilityConfigError, ServiceIdentity};
+pub use correlation::RequestId;
+pub use error_reporting::{
+    CriticalErrorCategory, SentryConfig, SentryConfigError, capture_critical_error,
+    with_request_correlation,
+};
+pub use incidents::{OperationalIncident, operational_incident_total, record_operational_incident};
+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,
+};
+pub use prometheus::{
+    MetricsConfig, MetricsConfigError, MetricsServeError, MetricsSurface, MetricsSurfaceError,
+};
+pub use propagation::{inject_current_trace_context, set_remote_trace_parent};
+pub use redaction::{
+    REDACTED_MARKER, RedactionLimits, RedactionLimitsError, SafeJsonError, redact_value, safe_json,
+};