* fix(relay): load COMMODITY_SYMBOLS from shared/commodities.json
The relay had a hardcoded 6-symbol list (VIX, Gold, Oil, NatGas, Silver,
Copper) that overwrote market:commodities-bootstrap:v1 every ~40 minutes,
wiping Platinum, Palladium, Aluminum, Brent, Gasoline, Heating Oil,
Uranium, and Lithium seeded by seed-commodity-quotes.mjs.
Use requireShared('commodities.json') — same source as the seed script
and the frontend — so adding a commodity to the JSON file is the only
change needed. YAHOO_ONLY is auto-derived: futures (=F) and indices (^).
* ci: trigger typecheck
* fix(relay): restore ^GSPC/^DJI/^IXIC in YAHOO_ONLY and add URA/LIT
Deriving YAHOO_ONLY from COMMODITY_SYMBOLS alone dropped the three major
indices (^GSPC, ^DJI, ^IXIC) which live in MARKET_SYMBOLS, not COMMODITY_SYMBOLS.
With Finnhub API key present, seedMarketQuotes() would route them through
Finnhub instead of Yahoo, potentially caching wrong index values.
Explicit list: indices hardcoded + futures/^ from COMMODITY_SYMBOLS + ETFs.
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