# Logout User

Invalidate the current JWT token.

**Endpoint**: `POST /api/auth/logout`
**Auth**: Required
**Content-Type**: `application/json`

## Request Headers

| Header | Type | Required | Description |
|--------|------|-----------|-------------|
| Authorization | string | Yes | Bearer token (e.g., `Bearer eyJhbG...`) |

### Example Request

```http
POST /api/auth/logout
Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...
```

## Response (204 No Content)

No response body.

## Error Responses

| Code | Description |
|------|-------------|
| 401 | Invalid or expired token |
| 403 | Token already invalidated |
