fix(health): enforce 1h+ TTL buffer across all seed jobs (#2072)

Full audit of seed TTL vs cron cadence. Rule: TTL >= cron_interval + 1h.

CRITICAL (TTL = cron, 0 buffer):
- seed-supply-chain-trade: tariffTrendsUs TRADE_TTL(6h) → TARIFF_TTL(8h)
- seed-supply-chain-trade: customsRevenue TRADE_TTL(6h) → CUSTOMS_TTL(24h)
- seed-sanctions-pressure: CACHE_TTL 12h → 15h (12h cron, 3h buffer)
- seed-usa-spending: CACHE_TTL 1h → 2h (1h cron, 1h buffer)

WARN (<1h buffer):
- seed-security-advisories: TTL 2h → 3h (1h cron, now 2h buffer)
- seed-token-panels: TTL 1h → 90min (30min cron, now 1h buffer)
- seed-etf-flows: TTL 1h → 90min (15min cron, now 75min buffer)
- seed-stablecoin-markets: TTL 1h → 90min (10min cron, now 80min buffer)
- seed-gulf-quotes: TTL 1h → 90min (10min cron, now 80min buffer)
- seed-crypto-quotes: TTL 1h → 2h (5min cron, now 115min buffer)
- ais-relay CRYPTO_SEED_TTL: 1h → 2h
- ais-relay STABLECOIN_SEED_TTL: 1h → 2h
- ais-relay SECTORS_SEED_TTL: 1h → 2h

scripts/seed-sanctions-pressure.mjs

@@ -12,7 +12,7 @@ loadEnvFile(import.meta.url);
 
 const CANONICAL_KEY = 'sanctions:pressure:v1';
 const STATE_KEY = 'sanctions:pressure:state:v1';
-const CACHE_TTL = 12 * 60 * 60;
+const CACHE_TTL = 15 * 60 * 60; // 15h — 3h buffer over 12h cron cadence (was 12h = 0 buffer)
 const DEFAULT_RECENT_LIMIT = 60;
 const OFAC_TIMEOUT_MS = 45_000;
 const PROGRAM_CODE_RE = /^[A-Z0-9][A-Z0-9-]{1,24}$/;