dataset card: hyperliquid_mainnet_archive part 2 (dedicated collector), bbo_stream config, audited corrections

hyperliquid_mainnet_archive: 2026-07-18..2026-08-04 (l2book/trades/asset_ctx/bbo/mark/funding/candles)

hyperliquid_trades: add 30 day(s) 2026-07-23..2026-08-21

polymarket_updown_orderbook: add 90 day(s) 2026-05-24..2026-08-21

initial commit