Diagnose: onboarding pulse blocked by stale extraction

**Why this matters:** The onboarding pulse run on 2026-04-12 returned zero installs in 7/14/24-day windows because source CSVs are 26 days stale, which blocks decision-grade monitoring of onboarding funnel movement. **Scope:** Re-extract required onboarding datasets (cohort, page-visits, chat-memory, signup-events) from Redshift using product-toolkit onboarding-pulse queries, rerun full pulse pipeline, publish updated checkpoint with fresh signal window and recommendations. **Source signal:** Voice log 2026-04-12 ([[reid]] onboarding-funnel check request) + product-toolkit freshness output (stale-file warning).