feat: multi-module iteration

server/dukang-api/src/common/parse-bigint.ts

@@ -0,0 +1,13 @@
+import { BadRequestException } from '@nestjs/common';
+
+export function parseBigIntParam(value: unknown, label = 'ID'): bigint {
+  const text = String(value ?? '').trim();
+  if (!/^\d+$/.test(text)) {
+    throw new BadRequestException(`${label}格式无效`);
+  }
+  try {
+    return BigInt(text);
+  } catch {
+    throw new BadRequestException(`${label}格式无效`);
+  }
+}