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discountry
5aecaabb16
placeOrder took 13 positional arguments; the other five order functions took 9-13. The leading six — adapter, symbol, openOrders, locks, timers, pendings — were the same values at all 36 call sites, and every engine spelled them out again for each order it placed. Introduce Parameter Object: OrderContext holds what is fixed for an engine's lifetime (exposed once via a lazily-built this.orderContext), and each function takes a named request. A wrong argument order is now a compile error rather than a silently misrouted order. The type change surfaced dead weight: placeOrder's opts.priceTick was never read by its body, yet five engines passed it. Removed. Also finishes the PrecisionSyncer migration — grid-engine was the ninth copy and was missed last round, so it still carried the uncleared retry timer. Extract Function: normalizeQuantity replaces the round-down-but-never-to-zero block that appeared in all five order functions. 250 pass; tsc and oxlint clean.