diff --git a/src/langbot/pkg/plugin/handler.py b/src/langbot/pkg/plugin/handler.py
index bdcd024d..645b28de 100644
--- a/src/langbot/pkg/plugin/handler.py
+++ b/src/langbot/pkg/plugin/handler.py
@@ -562,9 +562,7 @@ class RuntimeConnectionHandler(handler.Handler):
             limit = data.get('limit', 20)
             offset = data.get('offset', 0)
             try:
-                items, total = await self.ap.rag_runtime_service.vector_list(
-                    collection_id, filters, limit, offset
-                )
+                items, total = await self.ap.rag_runtime_service.vector_list(collection_id, filters, limit, offset)
                 return handler.ActionResponse.success(data={'items': items, 'total': total})
             except Exception as e:
                 return _make_rag_error_response(e, 'VectorStoreError', collection_id=collection_id)
diff --git a/src/langbot/pkg/vector/vdbs/chroma.py b/src/langbot/pkg/vector/vdbs/chroma.py
index 4b880c0e..d0ee58fc 100644
--- a/src/langbot/pkg/vector/vdbs/chroma.py
+++ b/src/langbot/pkg/vector/vdbs/chroma.py
@@ -244,11 +244,13 @@ class ChromaVectorDatabase(VectorDatabase):
 
         items = []
         for i, vid in enumerate(ids):
-            items.append({
-                'id': vid,
-                'document': documents[i] if i < len(documents) else None,
-                'metadata': metadatas[i] if i < len(metadatas) else {},
-            })
+            items.append(
+                {
+                    'id': vid,
+                    'document': documents[i] if i < len(documents) else None,
+                    'metadata': metadatas[i] if i < len(metadatas) else {},
+                }
+            )
 
         # Chroma col.count() gives total in collection; filtered count not available
         total = await asyncio.to_thread(col.count) if not filter else -1
diff --git a/src/langbot/pkg/vector/vdbs/milvus.py b/src/langbot/pkg/vector/vdbs/milvus.py
index ec41722c..e9c66b09 100644
--- a/src/langbot/pkg/vector/vdbs/milvus.py
+++ b/src/langbot/pkg/vector/vdbs/milvus.py
@@ -368,15 +368,17 @@ class MilvusVectorDatabase(VectorDatabase):
 
         items = []
         for row in results:
-            items.append({
-                'id': row.get('id', ''),
-                'document': row.get('text'),
-                'metadata': {
-                    'text': row.get('text', ''),
-                    'file_id': row.get('file_id', ''),
-                    'uuid': row.get('chunk_uuid', ''),
-                },
-            })
+            items.append(
+                {
+                    'id': row.get('id', ''),
+                    'document': row.get('text'),
+                    'metadata': {
+                        'text': row.get('text', ''),
+                        'file_id': row.get('file_id', ''),
+                        'uuid': row.get('chunk_uuid', ''),
+                    },
+                }
+            )
 
         # Milvus query with count(*)
         total = -1
diff --git a/src/langbot/pkg/vector/vdbs/pgvector_db.py b/src/langbot/pkg/vector/vdbs/pgvector_db.py
index dccf388b..35d05447 100644
--- a/src/langbot/pkg/vector/vdbs/pgvector_db.py
+++ b/src/langbot/pkg/vector/vdbs/pgvector_db.py
@@ -338,9 +338,7 @@ class PgVectorDatabase(VectorDatabase):
                 )
 
                 count_stmt = (
-                    select(func.count())
-                    .select_from(PgVectorEntry)
-                    .filter(PgVectorEntry.collection == collection)
+                    select(func.count()).select_from(PgVectorEntry).filter(PgVectorEntry.collection == collection)
                 )
 
                 if filter:
@@ -356,15 +354,17 @@ class PgVectorDatabase(VectorDatabase):
 
                 items = []
                 for row in rows:
-                    items.append({
-                        'id': row.id,
-                        'document': row.text or '',
-                        'metadata': {
-                            'text': row.text or '',
-                            'file_id': row.file_id or '',
-                            'uuid': row.chunk_uuid or '',
-                        },
-                    })
+                    items.append(
+                        {
+                            'id': row.id,
+                            'document': row.text or '',
+                            'metadata': {
+                                'text': row.text or '',
+                                'file_id': row.file_id or '',
+                                'uuid': row.chunk_uuid or '',
+                            },
+                        }
+                    )
 
                 return items, total
             except Exception as e:
diff --git a/src/langbot/pkg/vector/vdbs/qdrant.py b/src/langbot/pkg/vector/vdbs/qdrant.py
index 5df3a39a..f944846b 100644
--- a/src/langbot/pkg/vector/vdbs/qdrant.py
+++ b/src/langbot/pkg/vector/vdbs/qdrant.py
@@ -196,11 +196,13 @@ class QdrantVectorDatabase(VectorDatabase):
                     break
                 # Re-fetch payload if we skipped it during the skip phase
                 payload = point.payload or {}
-                collected.append({
-                    'id': str(point.id),
-                    'document': payload.get('text') or payload.get('document'),
-                    'metadata': payload,
-                })
+                collected.append(
+                    {
+                        'id': str(point.id),
+                        'document': payload.get('text') or payload.get('document'),
+                        'metadata': payload,
+                    }
+                )
                 remaining_to_collect -= 1
 
             if next_cursor is None:
diff --git a/src/langbot/pkg/vector/vdbs/seekdb.py b/src/langbot/pkg/vector/vdbs/seekdb.py
index ac3f8d04..676bc0d7 100644
--- a/src/langbot/pkg/vector/vdbs/seekdb.py
+++ b/src/langbot/pkg/vector/vdbs/seekdb.py
@@ -373,11 +373,13 @@ class SeekDBVectorDatabase(VectorDatabase):
 
         items = []
         for i, vid in enumerate(ids):
-            items.append({
-                'id': vid,
-                'document': documents[i] if i < len(documents) else None,
-                'metadata': metadatas[i] if i < len(metadatas) else {},
-            })
+            items.append(
+                {
+                    'id': vid,
+                    'document': documents[i] if i < len(documents) else None,
+                    'metadata': metadatas[i] if i < len(metadatas) else {},
+                }
+            )
 
         total = await asyncio.to_thread(coll.count) if not filter else -1
         return items, total