fix(update): harden global updates

src/infra/update-runner.test.ts

@@ -21,6 +21,15 @@ function createRunner(responses: Record<string, CommandResult>) {
   return { runner, calls };
 }
 
+async function pathExists(targetPath: string): Promise<boolean> {
+  try {
+    await fs.stat(targetPath);
+    return true;
+  } catch {
+    return false;
+  }
+}
+
 describe("runGatewayUpdate", () => {
   let tempDir: string;
 
@@ -199,6 +208,48 @@ describe("runGatewayUpdate", () => {
     expect(calls.some((call) => call === "npm i -g openclaw@latest")).toBe(true);
   });
 
+  it("cleans stale npm rename dirs before global update", async () => {
+    const nodeModules = path.join(tempDir, "node_modules");
+    const pkgRoot = path.join(nodeModules, "openclaw");
+    const staleDir = path.join(nodeModules, ".openclaw-stale");
+    await fs.mkdir(staleDir, { recursive: true });
+    await fs.mkdir(pkgRoot, { recursive: true });
+    await fs.writeFile(
+      path.join(pkgRoot, "package.json"),
+      JSON.stringify({ name: "openclaw", version: "1.0.0" }),
+      "utf-8",
+    );
+
+    let stalePresentAtInstall = true;
+    const runCommand = async (argv: string[]) => {
+      const key = argv.join(" ");
+      if (key === `git -C ${pkgRoot} rev-parse --show-toplevel`) {
+        return { stdout: "", stderr: "not a git repository", code: 128 };
+      }
+      if (key === "npm root -g") {
+        return { stdout: nodeModules, stderr: "", code: 0 };
+      }
+      if (key === "pnpm root -g") {
+        return { stdout: "", stderr: "", code: 1 };
+      }
+      if (key === "npm i -g openclaw@latest") {
+        stalePresentAtInstall = await pathExists(staleDir);
+        return { stdout: "ok", stderr: "", code: 0 };
+      }
+      return { stdout: "", stderr: "", code: 0 };
+    };
+
+    const result = await runGatewayUpdate({
+      cwd: pkgRoot,
+      runCommand: async (argv, _options) => runCommand(argv),
+      timeoutMs: 5000,
+    });
+
+    expect(result.status).toBe("ok");
+    expect(stalePresentAtInstall).toBe(false);
+    expect(await pathExists(staleDir)).toBe(false);
+  });
+
   it("updates global npm installs with tag override", async () => {
     const nodeModules = path.join(tempDir, "node_modules");
     const pkgRoot = path.join(nodeModules, "openclaw");