perf(server): use normal worker parallelism on Windows

packages/server/src/server/agent/providers/cursor-fast-5279.real.e2e.test.ts

@@ -1,67 +0,0 @@
-import { mkdir, mkdtemp, rm } from "node:fs/promises";
-import path from "node:path";
-import { expect, test } from "vitest";
-
-import { createTestLogger } from "../../../test-utils/test-logger.js";
-import { CursorACPAgentClient } from "./cursor-acp-agent.js";
-
-// Diagnosis-only reproduction for #5279. Requires the installed Cursor CLI;
-// sends no prompts and keeps Cursor's model preferences inside this checkout.
-test("Cursor Fast availability follows the drafted and active model", async () => {
-  const fixtures = path.resolve(".diagnose-5279");
-  await mkdir(fixtures, { recursive: true });
-  const root = await mkdtemp(path.join(fixtures, "cursor-"));
-  const client = new CursorACPAgentClient({
-    logger: createTestLogger(),
-    command: ["cursor-agent", "acp"],
-    env: {
-      CURSOR_CONFIG_DIR: path.join(root, "config"),
-      CURSOR_DATA_DIR: path.join(root, "data"),
-    },
-  });
-  const hasFast = (features: { id: string }[] | undefined) =>
-    features?.some((feature) => feature.id === "fast") ?? false;
-
-  try {
-    const catalog = await client.fetchCatalog({ scope: "workspace", cwd: root, force: true });
-    expect(catalog.models.some((model) => model.id === "composer-2.5")).toBe(true);
-    expect(catalog.models.some((model) => model.id === "kimi-k3")).toBe(true);
-
-    const composer = await client.listFeatures({
-      provider: "acp",
-      cwd: root,
-      model: "composer-2.5",
-    });
-    console.log("Default saved model: Composer draft offers Fast =", hasFast(composer));
-    expect.soft(hasFast(composer), "Composer draft must offer Fast").toBe(true);
-
-    // A real model change persists Composer only in the isolated Cursor config.
-    const seed = await client.createSession({
-      provider: "acp",
-      cwd: root,
-      model: "composer-2.5",
-    });
-    await seed.close();
-
-    for (const model of ["composer-2.5", "kimi-k3"]) {
-      const features = await client.listFeatures({ provider: "acp", cwd: root, model });
-      console.log("Composer saved model:", model, "draft offers Fast =", hasFast(features));
-      expect.soft(hasFast(features), `Draft ${model}`).toBe(model === "composer-2.5");
-    }
-
-    const session = await client.createSession({ provider: "acp", cwd: root });
-    try {
-      expect(hasFast(session.features)).toBe(true);
-      await session.setModel!("kimi-k3");
-      console.log("After Composer -> Kimi: session offers Fast =", hasFast(session.features));
-      expect.soft(hasFast(session.features), "Kimi session must hide Fast").toBe(false);
-      await expect(session.setFeature!("fast", "true")).rejects.toThrow(
-        "Unknown model config option: fast",
-      );
-    } finally {
-      await session.close();
-    }
-  } finally {
-    await rm(root, { recursive: true, force: true });
-  }
-}, 120_000);

packages/server/vitest.config.ts

@@ -19,9 +19,6 @@ export default defineConfig({
     setupFiles: [path.resolve(__dirname, "./src/test-utils/vitest-setup.ts")],
     pool: "forks",
     fileParallelism: false,
-    // Even two concurrent Git-heavy suites can exhaust Windows test deadlines.
-    // Run files serially so their subprocesses do not compete across suites.
-    maxWorkers: process.platform === "win32" ? 1 : undefined,
     exclude: ["**/node_modules/**", "**/dist/**", "**/.claude/**", "**/.dev/**"],
   },
 });