diff --git a/app/search/summarizer.py b/app/search/summarizer.py
index 5a10377..6ce15ec 100644
--- a/app/search/summarizer.py
+++ b/app/search/summarizer.py
@@ -93,9 +93,7 @@ def _expand_anchor_ids(group_text: str) -> list[str]:
     return ids
 
 
-def check_anchors(
-    summary: str, anchor_map: dict[str, str]
-) -> tuple[str, dict[str, int]]:
+def check_anchors(summary: str, anchor_map: dict[str, str]) -> tuple[str, dict[str, int]]:
     """校验行号引注：非法行号删锚不删断言。
 
     参数:
@@ -235,9 +233,7 @@ async def _call_llm(
         {"role": "system", "content": system_prompt},
         {"role": "user", "content": user_text},
     ]
-    response = await llm.chat(
-        messages, session_id=session_id, parent_call_id=parent_call_id
-    )
+    response = await llm.chat(messages, session_id=session_id, parent_call_id=parent_call_id)
     return response.content
 
 
@@ -315,9 +311,7 @@ async def summarize_node(
         verify_result = "跳过（调用失败）"
 
     if anchor_map is not None:
-        raw_summary, asm_stats = assemble_anchored_output(
-            raw_summary, anchor_map, assemble_mode
-        )
+        raw_summary, asm_stats = assemble_anchored_output(raw_summary, anchor_map, assemble_mode)
         anchor_stats.update(asm_stats)
 
     result = f"[内容摘要] {raw_summary}\n[核实] {verify_result}"
@@ -358,9 +352,7 @@ async def summarize_children(
     lines = []
     for child in children_info:
         t_start, t_end = child["time_range"]
-        lines.append(
-            f"- {child['id']} ({t_start:.0f}-{t_end:.0f}s): {child['summary']}"
-        )
+        lines.append(f"- {child['id']} ({t_start:.0f}-{t_end:.0f}s): {child['summary']}")
     children_text = "\n".join(lines)
 
     extract_input = f"问题: {question}\n\n{children_text}"
@@ -417,9 +409,7 @@ async def _summarize_search_result(
     返回:
         "[内容摘要] {提取结果}\\n[核实] {验证结果}" 或错误信息。
     """
-    extract_input = (
-        f"问题: {question}\n\n以下是语义搜索命中的视频节点描述和字幕:\n{raw_text}"
-    )
+    extract_input = f"问题: {question}\n\n以下是语义搜索命中的视频节点描述和字幕:\n{raw_text}"
     try:
         raw_summary = await _call_llm(
             llm,
@@ -487,9 +477,7 @@ async def summarize_nodes_batch(
         )
         return idx, node_id, summary
 
-    tasks = [
-        _worker(i, nid, text) for i, (nid, text, _) in enumerate(items)
-    ]
+    tasks = [_worker(i, nid, text) for i, (nid, text, _) in enumerate(items)]
     results_raw = await asyncio.gather(*tasks)
 
     results: dict[int, tuple[str, str]] = {}