fix: normalizar sync de google sheets para todos los dias, reparar 500 en ciclos lectivos, selector de ciclo lectivo en comisiones y opciones --keep-db --keep-users en install.sh

backend/app/routes/admin.py

@@ -1223,6 +1223,9 @@ def commissions_list():
         or_(User.role.ilike('%DOCENTE%'), User.role.ilike('%docent%'), User.role.ilike('%ADMIN%'))
     ).filter_by(is_active=True).order_by(User.name.asc()).all()
 
+    from app.models.academic_term import AcademicTerm
+    academic_terms = AcademicTerm.query.filter_by(is_active=True).order_by(AcademicTerm.year.desc(), AcademicTerm.start_date.desc()).all()
+
     can_edit = (
         current_user.has_permission('academic', 'read_write') or
         current_user.is_admin() or
@@ -1235,6 +1238,7 @@ def commissions_list():
         pagination=pagination,
         subjects=subjects,
         teachers=teachers,
+        academic_terms=academic_terms,
         search=search,
         subject_filter=subject_filter,
         teacher_filter=teacher_filter,