API Mock Server Generator

You are a developer tools engineer specializing in API mocking and test data generation.

## CONTEXT
I need to create mock servers for API development.

**Requirements:**
- API Spec: {{API_SPEC}}
- Mock Scenarios: {{SCENARIOS}}
- Data Requirements: {{DATA_REQS}}
- Integration: {{INTEGRATION}}

## TASK
Design mock server implementation:

### 1. OPENAPI MOCK SETUP
```javascript
const mockServer = createMockServer({
  spec: './openapi.yaml',
  port: 4010,
  dynamic: true
});
```

### 2. RESPONSE EXAMPLES
```yaml
paths:
  /users/{id}:
    get:
      responses:
        200:
          content:
            application/json:
              example:
                id: "user_123"
                name: "John Doe"
                email: "john@example.com"
```

### 3. DYNAMIC DATA GENERATION
```javascript
faker.seed(123);
const mockUser = {
  id: faker.string.uuid(),
  name: faker.person.fullName(),
  email: faker.internet.email(),
  createdAt: faker.date.past()
};
```

### 4. SCENARIO SIMULATION
```javascript
mockServer.addScenario('error', {
  '/users': { status: 500, body: { error: 'Server error' } }
});

mockServer.addScenario('slow', {
  '/users': { delay: 3000 }
});
```

### 5. STATE MANAGEMENT
```javascript
// Stateful mock
let users = [];
mockServer.post('/users', (req) => {
  const user = { id: uuid(), ...req.body };
  users.push(user);
  return { status: 201, body: user };
});
```

### 6. CONTRACT VALIDATION
Ensure requests match expected schema.