更新 MakerEngine、OffsetMakerEngine 和 TrendEngine，重构订单同步逻辑，优化撤单和止损判断，新增订单计划生成和安全撤单功能，提升代码可读性和维护性。

src/core/lib/order-plan.ts

@@ -0,0 +1,47 @@
+import type { AsterOrder } from "../../exchanges/types";
+
+export interface OrderTarget {
+  side: "BUY" | "SELL";
+  price: number;
+  amount: number;
+  reduceOnly: boolean;
+}
+
+export function makeOrderPlan(
+  openOrders: AsterOrder[],
+  targets: OrderTarget[],
+  tolerance: number
+): { toCancel: AsterOrder[]; toPlace: OrderTarget[] } {
+  const unmatched = new Set(targets.map((_, idx) => idx));
+  const toCancel: AsterOrder[] = [];
+
+  for (const order of openOrders) {
+    const price = Number(order.price);
+    if (!Number.isFinite(price)) {
+      toCancel.push(order);
+      continue;
+    }
+    const reduceOnly = order.reduceOnly === true;
+    const matchedIndex = targets.findIndex((target, index) => {
+      return (
+        unmatched.has(index) &&
+        target.side === order.side &&
+        target.reduceOnly === reduceOnly &&
+        Math.abs(price - target.price) <= tolerance
+      );
+    });
+    if (matchedIndex >= 0) {
+      unmatched.delete(matchedIndex);
+    } else {
+      toCancel.push(order);
+    }
+  }
+
+  const toPlace = [...unmatched]
+    .map((idx) => targets[idx])
+    .filter((t): t is OrderTarget => t !== undefined && t.amount > 1e-5);
+
+  return { toCancel, toPlace };
+}
+
+