REST API endpoints for AI-powered recommendations

GET /api/v1/recommendations
Authorization: Bearer <token>

{
  "data": [
    {
      "id": 1,
      "type": "cost",
      "title": "Downsize overprovisioned EC2 instance",
      "description": "Instance web-server-01 uses 8% average CPU over 30 days. Downsizing from t3.large to t3.small saves approximately $42/month.",
      "estimated_monthly_savings": 42.00,
      "resource_id": 15,
      "resource_name": "web-server-01",
      "status": "pending",
      "created_at": "2024-01-15T04:30:00Z"
    }
  ],
  "meta": { "total": 8, "page": 1, "per_page": 20 }
}

GET /api/v1/recommendations/{id}
Authorization: Bearer <token>

POST /api/v1/recommendations/generate
Authorization: Bearer <token>
Content-Type: application/json

{
  "resource_id": 15
}

POST /api/v1/recommendations/{id}/apply
Authorization: Bearer <token>

POST /api/v1/recommendations/{id}/dismiss
Authorization: Bearer <token>
Content-Type: application/json

{
  "reason": "Not applicable — instance is reserved"
}