optimize error handling if shop api error

src/Commerce/ShopSearchService.php

@@ -103,13 +103,14 @@ final class ShopSearchService
         );
 
         if ($this->lastSearchHadSystemFailure) {
-            $this->logger->warning('Shop search stopped after Store API system failure during reference probe', [
+            $this->logger->warning('Shop search reference probe failed, continuing with primary search', [
                 'commerceIntent' => $commerceIntent,
                 'originalPrompt' => $originalPrompt,
                 'failureReason' => $this->lastSearchFailureReason,
             ]);
 
-            //return [];
+            // A reference probe is only an enrichment step. It must not block the primary shop search.
+            $this->resetLastSearchFailure();
         }
 
         $rankedProducts = $this->executeSearch(
@@ -238,17 +239,6 @@ final class ShopSearchService
                 false
             );
 
-            if ($this->lastSearchHadSystemFailure) {
-                $this->logger->warning('Shop reference probe stopped after Store API system failure', [
-                    'commerceIntent' => $commerceIntent,
-                    'originalPrompt' => $originalPrompt,
-                    'referenceSearchText' => $referenceSearchText,
-                    'failureReason' => $this->lastSearchFailureReason,
-                ]);
-
-                break;
-            }
-
             if ($results !== []) {
                 $allResults = array_merge($allResults, $results);
             }