fix: /api/circles 500エラーの修正

削除済みのtags/featureTagsフィールドへの参照を削除

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/main.py

@@ -149,8 +149,6 @@ def get_summary_data():
             activityFrequency=circle.activityFrequency,
             activityFrequencyNote=circle.activityFrequencyNote,
             activityLocation=circle.activityLocation,
-            tags=circle.tags,
-            featureTags=circle.featureTags,
             isArchived=circle.isArchived,
         )
         summaries_payload.append(summary.model_dump(mode="json"))