fix(search): force KP for ru language in multi search

- MultiSearch returns KP results when lang starts with ru
- No fallback to TMDB for ru; KP errors bubble up

pkg/handlers/search.go

@@ -30,9 +30,18 @@ func (h *SearchHandler) MultiSearch(w http.ResponseWriter, r *http.Request) {
 	page := getIntQuery(r, "page", 1)
 	language := GetLanguage(r)
 
-	if services.ShouldUseKinopoisk(language) && h.kpService != nil {
+    if services.ShouldUseKinopoisk(language) {
+        if h.kpService == nil {
+            http.Error(w, "Kinopoisk service is not configured", http.StatusBadGateway)
+            return
+        }
+
         kpSearch, err := h.kpService.SearchFilms(query, page)
-		if err == nil {
+        if err != nil {
+            http.Error(w, err.Error(), http.StatusBadGateway)
+            return
+        }
+
         tmdbResp := services.MapKPSearchToTMDBResponse(kpSearch)
         multiResults := make([]models.MultiSearchResult, 0)
         for _, movie := range tmdbResp.Results {
@@ -64,8 +73,8 @@ func (h *SearchHandler) MultiSearch(w http.ResponseWriter, r *http.Request) {
         })
         return
     }
-	}
 
+    // EN/прочие языки — TMDB
     results, err := h.tmdbService.SearchMulti(query, page, language)
     if err != nil {
         http.Error(w, err.Error(), http.StatusInternalServerError)