Eliminates the setInterval(1s) + per-second DB write by storing picksExpiresAt
in draft_timers and using a targeted setTimeout per pick. Clients count down
locally from the expiresAt timestamp, removing server-pushed timer-update events.
Key changes:
- database/schema.ts: add picksExpiresAt and picksStartedAt to draft_timers
- server/timer.ts: full rewrite — schedulePickForSeason, rescheduleTimer,
30s recovery interval instead of 1s tick, overnight-pause resume scheduling
- server/socket.ts: new timer-pick-started / timer-overnight-paused events,
updated draft-state-sync to include expiresAt for reconnect recovery
- draft.make-pick / draft.force-manual-pick: compute actual remaining from
picksExpiresAt at pick time; call rescheduleTimer after the autodraft chain
- useDraftSocketEvents: handle new timer events, restore countdown on reconnect
- $leagueId.draft.$seasonId: client-side countdown useEffect from expiresAt
- plans/zero-downtime-scaling.md: full 4-phase scaling plan for future reference
Resolves 2351 unit tests (all passing).
https://claude.ai/code/session_019k5J6Ty7uP5HxSx6CsbiBK
c175d70084