/**
 * US-011 — unit tests for `src/sync/metrics.ts` + the receive-success-path
 * metric emission wired into {@link SqsPushReceiver}.
 *
 * Mirrors the hq-pro PR #112 metrics test:
 *   - mock the CloudWatchClient via `aws-sdk-client-mock`
 *   - inject the mocked client via the `_setSyncCloudWatchClient` test seam
 *   - assert namespace, metric name, unit, dimensions, value
 *   - assert SDK errors are CAUGHT (the receive loop must never crash on a
 *     CloudWatch outage)
 *
 * Plus the US-011-specific receiver wiring:
 *   - on the receive-SUCCESS path, the receiver publishes exactly one latency
 *     datum carrying the event's tenantId + sequenceNumber (mocked publish seam
 *     — no real AWS)
 *   - a failing publish seam does NOT crash the receiver loop
 */
export {};
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