Add CalDAV outbox recovery UI

tests/test_outbox.py

@@ -18,6 +18,7 @@ from govoplan_calendar.backend.caldav import (
 from govoplan_calendar.backend.db.models import CalendarOutboxOperation
 from govoplan_calendar.backend.outbox import (
     SqlCalendarOutboxProvider,
+    calendar_outbox_operation_action_states,
     claim_next_calendar_outbox_operation,
     discard_calendar_outbox_operation,
     dispatch_calendar_outbox,
@@ -508,6 +509,66 @@ class CalendarOutboxTests(unittest.TestCase):
                 operation_id=first.id,
             )
 
+    def test_recovery_action_state_is_batched_and_respects_source_state(self) -> None:
+        event = self.create_local_event(summary="First")
+        self.session.commit()
+        operation = self.session.query(CalendarOutboxOperation).one()
+
+        state = calendar_outbox_operation_action_states(
+            self.session,
+            [operation],
+        )[operation.id]
+        self.assertFalse(state["retry"]["allowed"])
+        self.assertTrue(state["reconcile"]["allowed"])
+        self.assertTrue(state["discard"]["allowed"])
+
+        operation.status = "conflict"
+        self.source.sync_enabled = False
+        self.session.flush()
+        disabled = calendar_outbox_operation_action_states(
+            self.session,
+            [operation],
+        )[operation.id]
+        self.assertFalse(disabled["retry"]["allowed"])
+        self.assertIn("disabled", str(disabled["retry"]["reason"]))
+        self.assertFalse(disabled["reconcile"]["allowed"])
+        self.assertTrue(disabled["discard"]["allowed"])
+
+        self.source.sync_enabled = True
+        update_event(
+            self.session,
+            tenant_id="tenant-1",
+            user_id=None,
+            event_id=event.id,
+            payload=CalendarEventUpdateRequest(summary="Second"),
+        )
+        self.session.flush()
+        stale = calendar_outbox_operation_action_states(
+            self.session,
+            [operation],
+        )[operation.id]
+        self.assertFalse(any(item["allowed"] for item in stale.values()))
+        self.assertIn("newer desired state", str(stale["discard"]["reason"]))
+
+    def test_manual_retry_cannot_be_repeated_while_pending(self) -> None:
+        self.create_local_event()
+        self.session.commit()
+        operation = self.session.query(CalendarOutboxOperation).one()
+        operation.status = "dead"
+        self.session.flush()
+
+        retry_calendar_outbox_operation(
+            self.session,
+            tenant_id="tenant-1",
+            operation_id=operation.id,
+        )
+        with self.assertRaisesRegex(ValueError, "pending"):
+            retry_calendar_outbox_operation(
+                self.session,
+                tenant_id="tenant-1",
+                operation_id=operation.id,
+            )
+
     def test_discard_latest_cancels_attempted_predecessor_chain(self) -> None:
         event = self.create_local_event(summary="First")
         self.session.commit()