update

backend/routes.py

@@ -95,6 +95,8 @@ async def remove_topic(topic: str):
     await delete_source(topic)          # topic config (DB) — removed together with the topic
     await delete_guide_content(topic)
     shutil.rmtree(topic_dir(topic), ignore_errors=True)
+    import qa
+    shutil.rmtree(qa.QA_DIR / topic, ignore_errors=True)  # QA reports belong to the topic
     return {"ok": True}