Start or replace onboarding from complete discovery

First audit a bounded window of the connected customer-owned PostHog Cloud project. Persist only counts, timestamps, signal/property identifiers, project identity, and a query-receipt hash; never raw payloads. Then deeply scan shipped docs and UI, routes/actions/jobs/webhooks, persistence, tests, existing telemetry, and CI/provider configuration. Map the actor and entry through every material durable transition, first value, and business result. Historical rows are non-authorizing and do not prove current source placement. Names are opaque. Do not truncate the flow to a fixed size.