Add Stock

Add stock to user inventory using Redis Sorted Sets This endpoint adds new stock codes to both: 1. PostgreSQL (full metadata storage) 2. Redis Sorted Sets (for atomic operations) The stock is stored in Redis using key pattern `stock:${ownerId}:${game}:${groupId}` with stock IDs as both score and member in the sorted set. Codes must be unique and not already in the user's inventory. Code formats are validated before storage.

curl -X POST "https://api.t4b.top/stock/add" \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{
    "game": "FREE_FIRE",
    "codeTxt": "ABCD-1234-EFGH-5678",
    "amount": 100,
    "price": "10.50"
  }'

{
  "data": {
    "quantity": 0,
    "codes": [
      {
        "id": 0,
        "code": {
          "amount": 0,
          "serial": "string"
        },
        "game": "string"
      }
    ]
  },
  "statusCode": 200
}