fix: publish hot updates on update domain

electron/lib/hotupdate.js

@@ -9,7 +9,7 @@ const hotstate = require("./hotstate");
 const UA = "codex-market";
 const OWNER = "mhgmh";
 const REPO = "codex-market-app";
-const API = `https://up.tokendun.cc/api/v1/repos/${OWNER}/${REPO}`;
+const API = `https://update.tokendun.cc/api/v1/repos/${OWNER}/${REPO}`;
 const HOT_TAG = "hot";
 // 可选 ed25519 公钥（SPKI PEM）。留空则只做 sha256 校验；填入后强制校验签名。
 const HOT_PUBKEY_PEM = "";