feat: implement context handling with timeout and goroutine management

internal/wb/rate_limiter.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
+	"os"
 	"sipro-mps/internal/redis"
 	"sipro-mps/pkg/utils"
 	"time"
@@ -69,6 +70,9 @@ type RateLimitTransport struct {
 func (t *RateLimitTransport) RoundTrip(req *http.Request) (*http.Response, error) {
 	ctx := req.Context()
 
+	req.Header.Set("X-Client-Secret", os.Getenv("WB_SECRET_TOKEN"))
+	req.Header.Set("User-Agent", "wbas_seller.denco.store3547")
+
 	tokenString := req.Header.Get("Authorization")
 	authData := utils.NewWbAuthData(tokenString)
 	authDataBytes, err := json.Marshal(authData)