builtbykev
7712f0a442
The "SIGNAL LIVE vs STALE 8h" contradiction was a field mismatch, not a dead pipeline. updated_at is the grade-LOCK time (advances only on a full snapshot, 5×/day — grades never change in-game, so it is intentionally stable). The SYNC badge measured the 20-min intraday cadence (expected_interval_s=1200) against that 5×/day field → structurally guaranteed STALE between slots even when intraday refreshes lines perfectly. - snapshotService: full snapshot now seeds refreshed_at at lock time - intradayRefresh already bumps refreshed_at every ~20 min (unchanged) - /api/snapshot/summary + GET /:sport now expose refreshed_at (was written to Redis but never serialized → no public liveness signal existed) - LiveLayer SYNC badge measures freshness from refreshed_at (fallback updated_at) Exposing refreshed_at also gives a public heartbeat probe: it advances every intraday slot, so pipeline liveness is verifiable without container logs. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>