diff --git a/platform/packages/api/test/integration/api-discovery.test.ts b/platform/packages/api/test/integration/api-discovery.test.ts
index d7539f637..c996cf56e 100644
--- a/platform/packages/api/test/integration/api-discovery.test.ts
+++ b/platform/packages/api/test/integration/api-discovery.test.ts
@@ -1,5 +1,5 @@
 import { PLATFORM_DISABLED_KEY } from '@void/platform';
-import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+import { afterAll, beforeAll, describe, expect, it } from 'vite-plus/test';
 import app from '../../src/index.ts';
 import { setupEnv, teardownEnv, type TestEnv } from './helpers.ts';
 
diff --git a/platform/packages/api/test/integration/cli-version-gate.test.ts b/platform/packages/api/test/integration/cli-version-gate.test.ts
index 7f286cb9a..8177c2e92 100644
--- a/platform/packages/api/test/integration/cli-version-gate.test.ts
+++ b/platform/packages/api/test/integration/cli-version-gate.test.ts
@@ -1,5 +1,5 @@
 import { eq } from 'drizzle-orm';
-import { describe, it, expect, beforeAll, beforeEach, afterAll } from 'vitest';
+import { describe, it, expect, beforeAll, beforeEach, afterAll } from 'vite-plus/test';
 import type { Db } from '../../src/db.ts';
 import app from '../../src/index.ts';
 import { MIN_CLI_VERSION } from '../../src/middleware/cli-version.ts';
diff --git a/platform/packages/api/test/unit/cli-version.test.ts b/platform/packages/api/test/unit/cli-version.test.ts
index 850a568dc..bf4570c07 100644
--- a/platform/packages/api/test/unit/cli-version.test.ts
+++ b/platform/packages/api/test/unit/cli-version.test.ts
@@ -1,5 +1,5 @@
 import { Hono } from 'hono';
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from 'vite-plus/test';
 import {
   checkCliVersionOrRespond,
   compareVersions,
diff --git a/platform/packages/api/test/unit/default-deployment-manifest.test.ts b/platform/packages/api/test/unit/default-deployment-manifest.test.ts
index 8676eea47..10a9ca611 100644
--- a/platform/packages/api/test/unit/default-deployment-manifest.test.ts
+++ b/platform/packages/api/test/unit/default-deployment-manifest.test.ts
@@ -1,7 +1,7 @@
 import { readFileSync } from 'node:fs';
 import { resolve } from 'node:path';
 import { createApplicationRoutes, parsePlatformDeploymentManifest } from '@void/platform';
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from 'vite-plus/test';
 
 const manifestPath = resolve(import.meta.dirname, '../../../../deployments/void-cloud.json');
 
diff --git a/platform/packages/api/test/unit/platform-deployment-manifest.test.ts b/platform/packages/api/test/unit/platform-deployment-manifest.test.ts
index e3a692d28..a699b7893 100644
--- a/platform/packages/api/test/unit/platform-deployment-manifest.test.ts
+++ b/platform/packages/api/test/unit/platform-deployment-manifest.test.ts
@@ -4,7 +4,7 @@ import {
   createPlatformResourceNames,
   parsePlatformDeploymentManifest,
 } from '@void/platform';
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from 'vite-plus/test';
 
 describe('platform deployment manifest', () => {
   it('creates isolated resource names', () => {
diff --git a/platform/packages/api/test/unit/platform-installation-manifest.test.ts b/platform/packages/api/test/unit/platform-installation-manifest.test.ts
index e6e204771..9946b1ced 100644
--- a/platform/packages/api/test/unit/platform-installation-manifest.test.ts
+++ b/platform/packages/api/test/unit/platform-installation-manifest.test.ts
@@ -6,7 +6,7 @@ import {
   recordInstallationStep,
   transitionInstallation,
 } from '@void/platform';
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from 'vite-plus/test';
 
 const now = '2026-09-14T00:00:00.000Z';
 
diff --git a/platform/packages/dashboard/test/unit/auth-middleware.test.ts b/platform/packages/dashboard/test/unit/auth-middleware.test.ts
index 43f21da75..3cac62faf 100644
--- a/platform/packages/dashboard/test/unit/auth-middleware.test.ts
+++ b/platform/packages/dashboard/test/unit/auth-middleware.test.ts
@@ -1,4 +1,4 @@
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from 'vite-plus/test';
 import { isPublicDashboardPath } from '../../middleware/01.auth.ts';
 
 describe('dashboard auth middleware', () => {
diff --git a/vite.config.ts b/vite.config.ts
index 00e0cb634..e9384c2a7 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -136,6 +136,10 @@ export default defineConfig({
       node: true,
     },
     jsPlugins: [
+      {
+        name: 'vite-plus',
+        specifier: 'vite-plus/oxlint-plugin',
+      },
       {
         name: 'react-hooks-js',
         specifier: 'eslint-plugin-react-hooks',
@@ -406,6 +410,8 @@ export default defineConfig({
       'unicorn/prefer-set-size': 'error',
       'use-isnan': 'error',
       'valid-typeof': 'error',
+      // Import test APIs from `vite-plus/test`, not `vitest`.
+      'vite-plus/prefer-vite-plus-imports': 'error',
     },
     options: {
       typeAware: false,