Improve price research queries

adapters/research/search_connector.go

@@ -81,7 +81,8 @@ func (c SearchConnector) collectEndpoint(ctx context.Context, configured SearchE
 	if !strings.Contains(configured.Template, "%s") {
 		return nil, ErrSearchRejected
 	}
-	endpoint, err := url.Parse(strings.Replace(configured.Template, "%s", url.QueryEscape(strings.TrimSpace(request.Query)), 1))
+	searchQuery := enrichedSearchQuery(request.Query)
+	endpoint, err := url.Parse(strings.Replace(configured.Template, "%s", url.QueryEscape(searchQuery), 1))
 	if err != nil || endpoint.Scheme != "https" || endpoint.Host == "" || !allowedHost(configured.AllowedHosts, strings.ToLower(endpoint.Hostname())) {
 		return nil, ErrSearchRejected
 	}
@@ -204,6 +205,15 @@ func hasNumericSearchTerm(values []string) bool {
 	return false
 }
 
+func enrichedSearchQuery(query string) string {
+	trimmed := strings.TrimSpace(query)
+	lower := strings.ToLower(trimmed)
+	if (strings.Contains(lower, "цен") || strings.Contains(lower, "стоим")) && !strings.Contains(lower, "куп") {
+		return trimmed + " цена купить сегодня"
+	}
+	return trimmed
+}
+
 func allowedHost(hosts map[string]struct{}, host string) bool { _, ok := hosts[host]; return ok }
 func (c SearchConnector) limit() int {
 	if c.MaxResults <= 0 || c.MaxResults > 8 {

adapters/research/search_connector_test.go

@@ -46,3 +46,12 @@ func TestSearchConnectorFallsBackToAnotherAllowedSource(t *testing.T) {
 		t.Fatalf("search result source = %#v", results[0].Source)
 	}
 }
+
+func TestEnrichedSearchQueryAddsPriceSignalsOnlyToPriceRequests(t *testing.T) {
+	if got := enrichedSearchQuery("проверь цену на видеокарту 4090"); got != "проверь цену на видеокарту 4090 цена купить сегодня" {
+		t.Fatalf("price query = %q", got)
+	}
+	if got := enrichedSearchQuery("какая погода в Казани"); got != "какая погода в Казани" {
+		t.Fatalf("non-price query = %q", got)
+	}
+}