diff --git a/frontends/nextjs/src/app/api/v1/[...slug]/route.test.ts b/frontends/nextjs/src/app/api/v1/[...slug]/route.test.ts
index ee1ee21f9..078a179a0 100644
--- a/frontends/nextjs/src/app/api/v1/[...slug]/route.test.ts
+++ b/frontends/nextjs/src/app/api/v1/[...slug]/route.test.ts
@@ -5,7 +5,9 @@
  * Integration tests verify full DBAL execution
  */
 
-import { describe, it, expect } from 'vitest'
+import { describe, it, expect, vi } from 'vitest'
+
+vi.mock('server-only', () => ({}))
 
 describe('API Route /api/v1/[...slug]', () => {
   describe('Route structure', () => {
diff --git a/frontends/nextjs/src/lib/workflow/multi-tenant-context.test.ts b/frontends/nextjs/src/lib/workflow/multi-tenant-context.test.ts
index d05e930c3..e44f5516a 100644
--- a/frontends/nextjs/src/lib/workflow/multi-tenant-context.test.ts
+++ b/frontends/nextjs/src/lib/workflow/multi-tenant-context.test.ts
@@ -9,7 +9,7 @@
  * - Security validations
  */
 
-import { describe, it, expect, beforeEach } from '@jest/globals'
+import { describe, it, expect, beforeEach } from 'vitest'
 import {
   MultiTenantContextBuilder,
   createContextFromRequest,
diff --git a/frontends/nextjs/src/lib/workflow/workflow-error-handler.test.ts b/frontends/nextjs/src/lib/workflow/workflow-error-handler.test.ts
index e649bb662..e29f91425 100644
--- a/frontends/nextjs/src/lib/workflow/workflow-error-handler.test.ts
+++ b/frontends/nextjs/src/lib/workflow/workflow-error-handler.test.ts
@@ -10,7 +10,7 @@
  * - Recovery suggestions and hints
  */
 
-import { describe, it, expect, beforeEach } from '@jest/globals'
+import { describe, it, expect, beforeEach } from 'vitest'
 import {
   WorkflowErrorHandler,
   WorkflowErrorCode,
diff --git a/frontends/nextjs/vitest.config.ts b/frontends/nextjs/vitest.config.ts
index f27396826..e26872b7f 100644
--- a/frontends/nextjs/vitest.config.ts
+++ b/frontends/nextjs/vitest.config.ts
@@ -16,7 +16,7 @@ export default defineConfig({
       // Use inline to avoid duplicate React instances in tests
       optimizer: {
         web: {
-          include: ['@/fakemui', 'react', 'react-dom']
+          include: ['react', 'react-dom']
         }
       }
     }
@@ -25,8 +25,8 @@ export default defineConfig({
     dedupe: ['react', 'react-dom'],
     alias: [
       // fakemui aliases must be first (more specific matches first)
-      { find: /^@\/fakemui\/(.+)$/, replacement: resolve(__dirname, '../../fakemui/$1') },
-      { find: /^@\/fakemui$/, replacement: resolve(__dirname, '../../fakemui/index.ts') },
+      { find: /^@\/fakemui\/(.+)$/, replacement: resolve(__dirname, '../../components/fakemui/$1') },
+      { find: /^@\/fakemui$/, replacement: resolve(__dirname, '../../components/fakemui/index.ts') },
       // dbal-ui alias for shared UI components
       { find: /^@dbal-ui\/(.+)$/, replacement: resolve(__dirname, '../../dbal/shared/ui/$1') },
       { find: /^@dbal-ui$/, replacement: resolve(__dirname, '../../dbal/shared/ui') },