first fix tag search

python/vector/vector_service.py

@@ -169,7 +169,7 @@ def search_tags(req: SearchRequest):
             continue
 
         results.append({
-            "chunk_id": tag_ids[idx],
+            "tag_id": tag_ids[idx],
             "score": float(score),
         })
 

src/Tag/TagRoutingService.php

@@ -32,6 +32,7 @@ final class TagRoutingService
         }
 
         $hits = $this->tagSearch->search($query, self::DEFAULT_TOPK);
+
         if (!is_array($hits) || $hits === []) {
             return null;
         }

src/Tag/TagVectorSearchClient.php

@@ -62,7 +62,7 @@ final readonly class TagVectorSearchClient
                 continue;
             }
 
-            $tagId = (string)($row['chunk_id'] ?? '');
+            $tagId = (string)($row['tag_id'] ?? '');
             $score = $row['score'] ?? null;
 
             if ($tagId === '' || !is_numeric($score)) {