diff --git a/package.json b/package.json
index 27d4034..4f60e63 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "author": "Codex Market",
   "license": "MIT",
   "main": "electron/bootstrap.js",
-  "hotContentVersion": "1.5.83",
+  "hotContentVersion": "1.5.84",
   "hotMinAppVersion": "1.5.0",
   "scripts": {
     "start": "electron .",
diff --git a/scripts/publish-hot.js b/scripts/publish-hot.js
index c0bb5c4..1855c68 100644
--- a/scripts/publish-hot.js
+++ b/scripts/publish-hot.js
@@ -50,6 +50,23 @@ fs.mkdirSync(OUT, { recursive: true });
 const bundleName = `bundle-${version}.zip`;
 const bundlePath = path.join(OUT, bundleName);
 
+// —— 0) 版本复用守卫：远端 manifest 已是该版本时拒绝发布（除非 --force）。
+// 客户端按 contentVersion 判断是否更新，同名覆盖会让已装用户永远收不到新内容。
+try {
+  const rel = JSON.parse(execFileSync("curl", ["-s", `-H`, `Authorization: token ${token}`,
+    `${API}/releases/tags/${TAG}`], { encoding: "utf8", maxBuffer: 64 * 1024 * 1024 }));
+  const mAsset = (rel.assets || []).find((a) => a.name === "hotupdate.json");
+  if (mAsset) {
+    const remote = JSON.parse(execFileSync("curl", ["-s", "-H", `Authorization: token ${token}`,
+      mAsset.browser_download_url], { encoding: "utf8" }));
+    if (remote && remote.contentVersion === version && !has("--force")) {
+      console.error(`✖ 版本 ${version} 已发布过（远端 manifest contentVersion 相同）。`);
+      console.error("  客户端会认为已是最新而忽略同名覆盖。请递增 --version 后重试，或确需覆盖时加 --force。");
+      process.exit(1);
+    }
+  }
+} catch (e) { /* 拉不到远端 manifest 时不阻塞发布 */ }
+
 // —— 1) 打包（zip，deflate，可被 lib/zip.js 解压）——
 fs.rmSync(bundlePath, { force: true });
 console.log(`打包 electron/ + renderer/ → ${bundleName} …`);