Fix NameError in dimension caching

app.py

@@ -792,6 +792,12 @@ def batch_analyze_nlp(
 
     results = []
     estudiantes_existentes = db.query(DimEstudiante).all()
+    
+    existing_docentes = {d.id_docente for d in db.query(DimDocente).all()}
+    existing_modulos = {m.id_modulo for m in db.query(DimModulo).all()}
+    existing_tiempos = {t.id_tiempo for t in db.query(DimTiempo).all()}
+    existing_docs = {d.id_documento for d in db.query(DimOrigenDocumental).all()}
+    existing_users = {u.id for u in db.query(Users).all()}
 
     for record in records:
         # Extraer NLP