fix: persist uncertain cancel outcomes

tests/adapters/persistence/test_postgresql_slot_repository_parity.py

@@ -35,7 +35,8 @@ _SLOT_COLUMNS = (
     "order_id, strategy_id, broker_order_id, portfolio_id, "
     "sell_strategy_id, forced_close_at, stop_loss_price, take_profit_price, "
     "created_at, updated_at, instance_key, retired_at, "
-    "timeout_sec, slippage_pct, occupancy_seq, venue"
+    "timeout_sec, slippage_pct, occupancy_seq, venue, "
+    "cancel_state, cancel_requested_at"
 )
 _MANAGED_SLOT_SQL = (
     f"SELECT {_SLOT_COLUMNS} FROM daily_slot "
@@ -146,6 +147,8 @@ def _row(slot: Slot) -> tuple:
         Decimal(str(slot.slippage_pct)),
         slot.occupancy_seq,
         slot.venue,
+        slot.cancel_state,
+        slot.cancel_requested_at,
     )