test: compare manifest version with package metadata

tests/test_payments.py

@@ -1,6 +1,8 @@
 from __future__ import annotations
 
 from datetime import UTC, datetime, timedelta
+from pathlib import Path
+import tomllib
 import unittest
 
 from sqlalchemy import create_engine
@@ -201,7 +203,8 @@ class PaymentTests(unittest.TestCase):
         self.assertEqual((), self.provider.list_payments(self.session, tenant_id="tenant-2"))
 
     def test_manifest_exposes_permission_bounded_operator_workspace(self) -> None:
-        self.assertEqual("0.1.21", manifest.version)
+        project = tomllib.loads((Path(__file__).parents[1] / "pyproject.toml").read_text())
+        self.assertEqual(project["project"]["version"], manifest.version)
         self.assertIsNotNone(manifest.frontend)
         assert manifest.frontend is not None
         self.assertEqual("@govoplan/payments-webui", manifest.frontend.package_name)