Recent webhook events for the org (testing/observability)

Org-scoped, read-only view of recently received webhook events.

Reads the Redis audit log written by WebhookService.ingest and returns only events that resolve to one of the caller-org's connections (by vendor_connection_id or Slack team_id), annotated with the resolved nickname. Forward events (Slack app_mention etc.) are audit-only in v1 — this surface confirms inbound events arrive and route to the right connection; it does not act on them. (The cross-org _internal/webhook-events endpoint is require_internal and can't back a normal-API-key dashboard, hence this org-scoped read.)