feat(responses): preserve editable availability history

tests/test_service.py

@@ -19,7 +19,7 @@ from govoplan_core.core.registry import PlatformRegistry
 from govoplan_access.backend.db.models import Account, User
 from govoplan_calendar.backend.db.models import CalendarCollection, CalendarEvent, CalendarOutboxOperation, CalendarSyncSource
 from govoplan_calendar.backend.manifest import get_manifest as get_calendar_manifest
-from govoplan_poll.backend.db.models import Poll, PollInvitation, PollOption, PollResponse
+from govoplan_poll.backend.db.models import Poll, PollInvitation, PollLifecycleTransition, PollOption, PollResponse
 from govoplan_poll.backend.manifest import get_manifest as get_poll_manifest
 from govoplan_poll.backend.router import api_get_poll, api_list_polls, api_submit_poll_response
 from govoplan_poll.backend.schemas import PollAnswerInput, PollSubmitResponseRequest
@@ -86,6 +86,7 @@ class SchedulingServiceTests(unittest.TestCase):
                 PollOption.__table__,
                 PollResponse.__table__,
                 PollInvitation.__table__,
+                PollLifecycleTransition.__table__,
                 CalendarCollection.__table__,
                 CalendarEvent.__table__,
                 CalendarSyncSource.__table__,
@@ -119,6 +120,7 @@ class SchedulingServiceTests(unittest.TestCase):
                 CalendarEvent.__table__,
                 CalendarCollection.__table__,
                 PollInvitation.__table__,
+                PollLifecycleTransition.__table__,
                 PollResponse.__table__,
                 PollOption.__table__,
                 Poll.__table__,