'Try now' and the newest-first batch implement onboarding prioritisation: foreground (user-clicked 'Try now') summarises a chosen video on demand; background batch summarises newest-first; both honour the shared rate gate. Remove any prior framing that described 'Try now' as making traffic 'look organic to YouTube' or as rate-limit evasion — that was not the rationale and contradicts ADR-014's explicit account-safety constraint. Correct statement: rate limiting is respected, not evaded. TAPIR_FETCH_RATE and TAPIR_FETCH_BACKOFF are honest rate controls; they govern how fast Tapir fetches captions, not how the requests appear to YouTube. Architecture: add two-path model table (foreground/background, both through globalFetchGate) and newest-first batch ordering doc (three-phase RunOnce, before/after example). ui-spec: add 'Try now' row with correct rationale; add pipeline stats bar row; update Summarized-only filter row to mention sort-to-top.