feat(calendar): schedule durable outbox recovery

tests/test_calendar_outbox_worker.py

@@ -0,0 +1,48 @@
+from __future__ import annotations
+
+import unittest
+from unittest.mock import MagicMock, patch
+
+from govoplan_core.celery_app import celery, dispatch_calendar_outbox
+
+
+class CalendarOutboxWorkerTests(unittest.TestCase):
+    def test_worker_commits_provider_outcome(self) -> None:
+        session = MagicMock()
+        database = MagicMock()
+        database.SessionLocal.return_value.__enter__.return_value = session
+        provider = MagicMock()
+        provider.dispatch_due.return_value = {
+            "processed": 1,
+            "succeeded": 1,
+            "retrying": 0,
+            "failed": 0,
+            "operations": [{"id": "operation-1", "status": "succeeded"}],
+        }
+
+        with (
+            patch("govoplan_core.celery_app._calendar_outbox", return_value=provider),
+            patch("govoplan_core.db.session.get_database", return_value=database),
+        ):
+            result = dispatch_calendar_outbox.run("tenant-1", 25)
+
+        provider.dispatch_due.assert_called_once_with(
+            session,
+            tenant_id="tenant-1",
+            limit=25,
+        )
+        session.commit.assert_called_once_with()
+        self.assertEqual(result["succeeded"], 1)
+
+    def test_calendar_worker_route_and_periodic_recovery_are_registered(self) -> None:
+        self.assertEqual(
+            celery.conf.task_routes["govoplan.calendar.dispatch_outbox"],
+            {"queue": "calendar"},
+        )
+        schedule = celery.conf.beat_schedule["calendar-outbox-every-minute"]
+        self.assertEqual(schedule["task"], "govoplan.calendar.dispatch_outbox")
+        self.assertEqual(schedule["schedule"], 60.0)
+
+
+if __name__ == "__main__":
+    unittest.main()