Globale Orphan-Bereinigung: /api/purge-all-orphans + UI-Button

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

app.py

@@ -1304,6 +1304,43 @@ def purge_orphan_junctions(obj_id: str):
     return jsonify({"ok": True, "orphans_removed": removed})
 
 
+@app.route("/api/purge-all-orphans", methods=["POST"])
+def purge_all_orphans():
+    """
+    Bereinigt verwaiste Junction-Einträge für ALLE Objekte auf einmal.
+    Lädt alle Junction-Zeilen und prüft, ob das referenzierte Item noch existiert.
+    """
+    token = request.headers.get("Authorization", "")
+    removed = 0
+
+    for junc_col, fk_field, item_col in [
+        ("questions_objects", "questions_id", "questions"),
+        ("words_objects", "words_id", "words"),
+    ]:
+        junc_data, _ = _directus("GET",
+            f"/items/{junc_col}?fields=id,{fk_field}&limit=10000", token)
+        rows = junc_data.get("data") or []
+
+        # collect all unique FK values
+        fk_ids = list({row[fk_field] for row in rows if row.get(fk_field)})
+        if not fk_ids:
+            continue
+
+        # fetch which IDs still exist in one bulk call
+        ids_param = ",".join(fk_ids)
+        existing_data, _ = _directus("GET",
+            f"/items/{item_col}?filter[id][_in]={ids_param}&fields=id&limit=10000", token)
+        existing_ids = {e["id"] for e in (existing_data.get("data") or [])}
+
+        orphan_junc_ids = [row["id"] for row in rows
+                           if row.get(fk_field) and row[fk_field] not in existing_ids]
+        if orphan_junc_ids:
+            _directus("DELETE", f"/items/{junc_col}", token, orphan_junc_ids)
+            removed += len(orphan_junc_ids)
+
+    return jsonify({"ok": True, "orphans_removed": removed})
+
+
 @app.route("/api/fix-distractor-field", methods=["POST"])
 def fix_distractor_field():
     """Setzt special=m2m auf questions.distractor_words (einmalig)."""