test: speed up vitest launcher startup

test/scripts/pnpm-runner.test.ts

@@ -22,6 +22,28 @@ describe("resolvePnpmRunner", () => {
     });
   });
 
+  it("prepends node args when launching pnpm through node", () => {
+    expect(
+      resolvePnpmRunner({
+        npmExecPath: "/home/test/.cache/node/corepack/v1/pnpm/10.32.1/bin/pnpm.cjs",
+        nodeArgs: ["--no-maglev"],
+        nodeExecPath: "/usr/local/bin/node",
+        pnpmArgs: ["exec", "vitest", "run"],
+        platform: "linux",
+      }),
+    ).toEqual({
+      command: "/usr/local/bin/node",
+      args: [
+        "--no-maglev",
+        "/home/test/.cache/node/corepack/v1/pnpm/10.32.1/bin/pnpm.cjs",
+        "exec",
+        "vitest",
+        "run",
+      ],
+      shell: false,
+    });
+  });
+
   it("falls back to bare pnpm on non-Windows when npm_execpath is missing", () => {
     expect(
       resolvePnpmRunner({

test/scripts/run-vitest.test.ts

@@ -0,0 +1,17 @@
+import { describe, expect, it } from "vitest";
+import { resolveVitestNodeArgs } from "../../scripts/run-vitest.mjs";
+
+describe("scripts/run-vitest", () => {
+  it("adds --no-maglev to vitest child processes by default", () => {
+    expect(resolveVitestNodeArgs({ PATH: "/usr/bin" })).toEqual(["--no-maglev"]);
+  });
+
+  it("allows opting back into Maglev explicitly", () => {
+    expect(
+      resolveVitestNodeArgs({
+        OPENCLAW_VITEST_ENABLE_MAGLEV: "1",
+        PATH: "/usr/bin",
+      }),
+    ).toEqual([]);
+  });
+});