fix(daemon): avoid freezing Windows PATH in task scripts (#39139, thanks @Narcooo)

Co-authored-by: majx_mac <mjxnarco@pku.edu.cn>

src/daemon/service-env.test.ts

@@ -268,7 +268,7 @@ describe("buildServiceEnvironment", () => {
     });
     expect(env.HOME).toBe("/home/user");
     if (process.platform === "win32") {
-      expect(env.PATH).toBe("");
+      expect(env).not.toHaveProperty("PATH");
     } else {
       expect(env.PATH).toContain("/usr/bin");
     }
@@ -331,6 +331,20 @@ describe("buildServiceEnvironment", () => {
     expect(env.http_proxy).toBe("http://proxy.local:7890");
     expect(env.all_proxy).toBe("socks5://proxy.local:1080");
   });
+
+  it("omits PATH on Windows so Scheduled Tasks can inherit the current shell path", () => {
+    const env = buildServiceEnvironment({
+      env: {
+        HOME: "C:\\Users\\alice",
+        PATH: "C:\\Windows\\System32;C:\\Tools\\rg",
+      },
+      port: 18789,
+      platform: "win32",
+    });
+
+    expect(env).not.toHaveProperty("PATH");
+    expect(env.OPENCLAW_WINDOWS_TASK_NAME).toBe("OpenClaw Gateway");
+  });
 });
 
 describe("buildNodeServiceEnvironment", () => {