fix: preserve KOC portal path in delegation links

koc-portal/tests/rendered-html.test.mjs

@@ -129,6 +129,9 @@ test("creates anonymous delegation bundles and reuses one-to-one backfill", asyn
   assert.match(page, /action:\s*"revoke_delegation"/);
   assert.match(page, /合作社转派 · 无需登录/);
   assert.match(page, /"X-KOC-Delegation"/);
+  assert.match(page, /const url = new URL\(window\.location\.href\)/);
+  assert.match(page, /url\.search = ""/);
+  assert.doesNotMatch(page, /const url = new URL\(window\.location\.origin\)/);
   assert.match(page, /url\.searchParams\.set\("share", shareToken\)/);
   assert.match(page, /请保存当前分享链接/);
   assert.doesNotMatch(page, /底层KOC手机号|底层KOC企微|底层KOC微信/);