core: !EXPERIMENTAL! 支持跨域引用题目

packages/migrate-vijos/script.ts

@@ -220,6 +220,7 @@ const tasks = {
             code: doc.code,
             lang: doc.lang,
             uid: doc.uid,
+            pdomain: doc.domain_id,
             pid: pid(doc.pid),
             domainId: doc.domain_id,
             judger: doc.judge_uid || 1,