fix(ci): 修复2个ruff错误 - F541多余f前缀 + B007未用循环变量

apps/api/app/services/ai_service.py

@@ -434,7 +434,7 @@ def semantic_match_assets(
 
     user_prompt = (
         f"目标视频描述：{description}\n\n"
-        f"素材列表：\n" + "\n".join(asset_summaries) + f"\n\n请返回每个素材的匹配分数JSON："
+        f"素材列表：\n" + "\n".join(asset_summaries) + "\n\n请返回每个素材的匹配分数JSON："
     )
 
     messages = [

apps/worker/worker_app/tasks/ai_tasks.py

@@ -142,7 +142,7 @@ def _parse_recommend_response(
             return None
 
         clips: List[Dict[str, Any]] = []
-        for i, clip in enumerate(clips_data):
+        for _, clip in enumerate(clips_data):
             if not isinstance(clip, dict):
                 continue
             asset_id = str(clip.get("asset_id", ""))