curl --request POST \
  --url http://localhost:3000/api/user/feedback \
  --header 'Content-Type: application/json' \
  --header 'x-access-token: <api-key>' \
  --data '
{
  "feedback": "Great feature! Very helpful.",
  "rating": 5,
  "category": "feature_request",
  "context": {
    "page": "<string>",
    "action": "<string>"
  }
}
'

{
  "success": true,
  "feedbackId": "<string>"
}