feat: enhance order handling in LighterGateway and introduce order identity normalization for improved precision and consistency

src/exchanges/lighter/flags.ts

@@ -0,0 +1,30 @@
+const TRUE_VALUES = new Set(["1", "true", "yes", "y", "on"]);
+const FALSE_VALUES = new Set(["0", "false", "no", "n", "off"]);
+
+export function normalizeBooleanFlag(value: unknown): boolean | null {
+  if (typeof value === "boolean") return value;
+  if (typeof value === "number") {
+    if (value === 1) return true;
+    if (value === 0) return false;
+    return null;
+  }
+  if (typeof value === "string") {
+    const normalized = value.trim().toLowerCase();
+    if (!normalized) return null;
+    if (TRUE_VALUES.has(normalized)) return true;
+    if (FALSE_VALUES.has(normalized)) return false;
+    return null;
+  }
+  if (typeof value === "bigint") {
+    if (value === 1n) return true;
+    if (value === 0n) return false;
+    return null;
+  }
+  return null;
+}
+
+export function coerceBooleanFlag(value: unknown, fallback = false): boolean {
+  const normalized = normalizeBooleanFlag(value);
+  if (normalized == null) return fallback;
+  return normalized;
+}