Replay Real Customer API Sessions as Datadog Synthetics Tests

A new `proxymock export datadog-synthetics --publish` capability is presented as a way to turn recorded production traffic from an individual customer session into a runnable Datadog Synthetics multistep API test. Rather than manually searching logs or recreating a suspected flow, teams can isolate requests using a stable correlation value such as a session header, cookie, JWT claim, tenant identifier, or query parameter, then export the ordered requests and publish them directly to Datadog. The workflow supports Speedscale Cloud or local proxymock inspection for finding relevant traffic, filter expressions for narrowing scenarios, multistep or individual-request test bundles, and automatic extraction and reuse of response values such as tokens and order IDs across subsequent requests. Sensitive headers including authorization and cookies are redacted into variables and, when publishing, can be configured as Datadog global variables so tests remain runnable without exposing credentials in exported files. The approach is intended to preserve real request bodies, dependencies, timing order, retries, and tenant-specific permissions that conventional browser scripts or manual reproduction often miss, enabling incident regression tests, tenant-specific canaries, and auditable reproductions of customer-reported failures.

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