Retail Sales: switch all currencies to *SLRTTO01GPSAM format (OECD monthly,
already in MoM%) — covers USD, EUR(DEU proxy), GBP, JPY, CHF, CAD.
Remove retailSales from PCT_FIELDS since values are already percentages.
Employment: add LFEMTTTT*647S series (monthly levels → MoM%) for JPY, CAD,
AUD and quarterly for NZD. These replace null/non-existent FRED series.
PMI stays ⚠ — no free real-time source found.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
FRED series GOLDPMGBD228NLBM and SLVPRUSD do not exist on the free tier.
Replace with Stooq XAU/USD and XAG/USD free CSV endpoint (no API key needed).
Delta = intraday change vs session open. Cache 5 min on Vercel.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>