update

backend/main.py

@@ -73,8 +73,7 @@ def topic_anlegen(auftrag: TopicNeu):
 
 def _pipeline_daten_loeschen(topic: str) -> None:
     """Alle Pipeline-Daten eines Topics räumen (Snapshots inklusive)."""
-    for tabelle in ("tasks", "gate_laeufe", "quellen", "soll", "atome", "kanten",
-                    "lernziele", "bausteine", "kapitel"):
+    for tabelle in db.PIPELINE_TABELLEN:
         db.execute(f"DELETE FROM {tabelle} WHERE topic=?", topic)
     db.execute("DELETE FROM befunde WHERE run_id IN "
                "(SELECT id FROM runs WHERE topic=?)", topic)