first cleanup iter

tests/test_admin_backup.py

@@ -5,10 +5,6 @@ in production, but tests mock the subprocess boundary. These tests verify
 the route logic, the BackupRecord model, and audit logging.
 """
 
-import os
-
-import pytest
-
 from app.extensions import db
 from app.models import AuditLog, BackupRecord
 
@@ -20,7 +16,6 @@ def _redirected(response):
 class TestBackupCreate:
     def test_create_backup_succeeds(self, app, client, as_role, monkeypatch):
         import app.routes.admin as admin_module
-        from app.supporting_scripts.backup import BackupError
 
         def fake_create_backup_record(backup_type='manual', notes=None):
             from app.models import BackupRecord