diff --git a/main.js b/main.js
index f851284..00f2b94 100644
--- a/main.js
+++ b/main.js
@@ -4,9 +4,10 @@ const http = require("node:http");
 const fs = require("node:fs");
 const path = require("node:path");
 const os = require("node:os");
+const { spawn } = require("node:child_process");
 const autostart = require("./lib/autostart");
 const hooksInstaller = require("./lib/hooks-installer");
-const { unpacked, portableDir, isPackaged } = require("./lib/paths");
+const { unpacked, portableDir, portableExe, isPackaged } = require("./lib/paths");
 
 const APP_DIR = __dirname;
 const HOME = os.homedir();
@@ -507,6 +508,12 @@ function startServer() {
       }));
       return;
     }
+    if (req.method === "POST" && req.url === "/restart") {
+      res.writeHead(204);
+      res.end();
+      setTimeout(restartApp, 100);
+      return;
+    }
     if (req.method === "GET" && req.url === "/health") {
       res.writeHead(200, { "content-type": "text/plain" });
       res.end("ok");
@@ -653,6 +660,7 @@ function buildMenu() {
     { label: "開啟設定檔", click: () => { saveConfig(); shell.openPath(CONFIG_PATH); } },
     { label: "開啟事件紀錄", click: () => { appendLog("open log"); shell.openPath(LOG_PATH); } },
     { type: "separator" },
+    { label: "重啟", click: restartApp },
     { label: "結束", click: () => app.quit() },
   ]);
 }
@@ -679,6 +687,23 @@ function setScale(scale) {
   refreshTray();
 }
 
+// 重啟。安裝版／開發模式用 app.relaunch()（等目前這個結束後才啟動新的）。
+// portable 版不能這樣：relaunch 會重跑解壓到 %TEMP% 的那顆 exe，而 portable 外殼在程式結束時會把
+// 整個解壓目錄刪掉、下次啟動再重新解壓；舊程序還在跑時檔案被鎖住，解壓也會失敗。
+// 所以改成延遲兩秒後重新執行原本的 -portable.exe，然後結束自己。
+function restartApp() {
+  appendLog("restart requested");
+  const exe = portableExe();
+  if (exe) {
+    const child = spawn("cmd.exe", ["/c", `ping -n 3 127.0.0.1 >nul && start "" "${exe}"`],
+      { detached: true, stdio: "ignore", windowsHide: true, windowsVerbatimArguments: true });
+    child.unref();
+  } else {
+    app.relaunch();
+  }
+  app.quit();
+}
+
 function resetPosition() {
   if (!win) return;
   const pos = defaultPosition(windowSizeFor(config.scale));
diff --git a/package-lock.json b/package-lock.json
index 08ed285..9dab6ef 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "claude-pet",
-  "version": "2.0.12",
+  "version": "2.0.13",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "claude-pet",
-      "version": "2.0.12",
+      "version": "2.0.13",
       "devDependencies": {
         "electron": "^43.4.1",
         "electron-builder": "^26.0.12"
diff --git a/package.json b/package.json
index e3bca0e..8b05ba0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "claude-pet",
-  "version": "2.0.12",
+  "version": "2.0.13",
   "description": "Codex Pets 相容的 Claude Code 桌面寵物（spriteVersionNumber 2：9 個動作列 + 16 方向追視）",
   "main": "main.js",
   "private": true,