/**
 * @cogitator-ai/workflows - Observability module
 *
 * Provides distributed tracing and metrics collection for workflow execution.
 *
 * Features:
 * - W3C Trace Context propagation
 * - OpenTelemetry-compatible span export (OTLP, Jaeger, Zipkin)
 * - Prometheus-compatible metrics export
 * - Per-workflow and per-node metrics
 * - Token usage and cost tracking
 */
export { WorkflowTracer, createTracer, getGlobalTracer, setGlobalTracer, type SpanScope, } from './tracer.js';
export { WorkflowMetricsCollector, createMetricsCollector, getGlobalMetrics, setGlobalMetrics, } from './metrics.js';
export { type SpanExporterInstance, type ExporterConfig, ConsoleSpanExporter, OTLPSpanExporter, ZipkinSpanExporter, CompositeSpanExporter, NoopSpanExporter, createSpanExporter, } from './exporters.js';
export { TRACE_PARENT_HEADER, TRACE_STATE_HEADER, BAGGAGE_HEADER, SERVICE_NAME, SERVICE_VERSION, SERVICE_INSTANCE_ID, WORKFLOW_NAME, WORKFLOW_ID, WORKFLOW_RUN_ID, WORKFLOW_VERSION, WORKFLOW_ENTRY_POINT, WORKFLOW_NODE_COUNT, WORKFLOW_STATUS, NODE_NAME, NODE_TYPE, NODE_INDEX, NODE_RETRY_COUNT, NODE_TIMEOUT, NODE_DURATION, NODE_STATUS, LLM_SYSTEM, LLM_REQUEST_MODEL, LLM_RESPONSE_MODEL, LLM_REQUEST_MAX_TOKENS, LLM_REQUEST_TEMPERATURE, LLM_REQUEST_TOP_P, LLM_USAGE_INPUT_TOKENS, LLM_USAGE_OUTPUT_TOKENS, LLM_USAGE_TOTAL_TOKENS, LLM_USAGE_COST, TOOL_NAME, TOOL_PARAMETERS, TOOL_RESULT, TOOL_DURATION, TOOL_SUCCESS, ERROR_TYPE, ERROR_MESSAGE, ERROR_STACK, ERROR_CODE, RETRY_ATTEMPT, RETRY_MAX, RETRY_DELAY, CIRCUIT_BREAKER_STATE, COMPENSATION_TRIGGERED, COMPENSATION_NODE, DEAD_LETTER_QUEUE, APPROVAL_ID, APPROVAL_TYPE, APPROVAL_STATUS, APPROVAL_TIMEOUT, APPROVAL_ASSIGNEE, TIMER_TYPE, TIMER_DELAY, TIMER_CRON, TIMER_SCHEDULED_AT, TIMER_FIRED_AT, SUBWORKFLOW_NAME, SUBWORKFLOW_DEPTH, SUBWORKFLOW_PARENT_ID, TRIGGER_TYPE, TRIGGER_ID, TRIGGER_SOURCE, WEBHOOK_PATH, WEBHOOK_METHOD, CRON_EXPRESSION, CRON_NEXT_RUN, workflowSpanAttributes, nodeSpanAttributes, llmSpanAttributes, toolSpanAttributes, errorSpanAttributes, retrySpanAttributes, } from './span-attributes.js';
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