fix(health): widen gpsjam maxStaleMin 12h → 24h (koala73#3494)

* fix(health): tighten gpsjam maxStaleMin 12h → 8h for faster outage signal

Wingbits API hit a HTTP 402 quota exhaustion 2026-04-29; the seeder
(scripts/fetch-gpsjam.mjs) gracefully catches the error and extends TTL
on stale data without refreshing fetchedAt — the only signal that the
upstream is down is STALE_SEED on the seed-meta age. The previous 720
(12h) threshold meant 12h of silent staleness before the dashboard
flagged it. 480 (8h) keeps the alarm honest while still tolerating
routine cron jitter on whatever the actual cadence is.

Also added the inline comment that was missing — every other entry in
SEED_META documents the cadence/rationale, this one didn't.

* fix(health): set gpsjam maxStaleMin to 24h (was 8h on PR, 12h before)

Operator decision: rather than tightening to 8h to alarm faster, give
24h headroom so the monthly Wingbits quota issue doesn't keep flipping
the dashboard to STALE_SEED while the upstream plan is being sorted.

Author: koala73

api/health.js

@@ -286,7 +286,7 @@ const SEED_META = {
   // minerals + giving: on-demand cachedFetchJson only, no seed-meta writer — freshness checked via TTL
   // bisExchange + bisCredit: extras written by same BIS script via writeExtraKey, no dedicated seed-meta
   fxYoy:            { key: 'seed-meta:economic:fx-yoy',           maxStaleMin: 1500 }, // daily cron; 25h tolerance + 1h drift
-  gpsjam:           { key: 'seed-meta:intelligence:gpsjam',       maxStaleMin: 720 },
+  gpsjam:           { key: 'seed-meta:intelligence:gpsjam',       maxStaleMin: 1440 }, // Wingbits API (scripts/fetch-gpsjam.mjs); 1440min = 24h tolerance gives operator headroom to handle upstream outages and monthly quota exhaustion (HTTP 402 observed 2026-04-29) without dashboard noise. Seeder catch-block extends TTL on fail without refreshing fetchedAt, so STALE_SEED via age is the only alarm path.
   positiveGeoEvents:{ key: 'seed-meta:positive-events:geo',       maxStaleMin: 60 },
   riskScores:       { key: 'seed-meta:intelligence:risk-scores',  maxStaleMin: 30 }, // CII warm-ping every 8min; 30min = ~3.5x interval,
   iranEvents:       { key: 'seed-meta:conflict:iran-events',      maxStaleMin: 20160 }, // manual seed from LiveUAMap; 20160 = 14d = 2× weekly cadence