fix(intents): isolate alarm context lookup and sanitize alarm failure logs

Co-authored-by: genichin <4282227+genichin@users.noreply.github.com>

trex_core/application/intents.py

@@ -183,20 +183,11 @@ class IntentService:
             intent.intent_id, decision.status, decision.slot_id, decision.reason
         )
         if decision.status == "rejected" and decision.reason == "reconcile_warned":
-            slot = (
-                self._repo.fetch_slot(intent.slot_id)
-                if intent.slot_id is not None
-                else (
-                    self._repo.find_slot_by_portfolio(self._instance_key, intent.portfolio_id)
-                    if intent.portfolio_id
-                    else None
-                )
-            )
             self._publish_reconcile_warned_rejection_alarm(
                 intent_id=intent.intent_id,
                 intent_type="buy",
                 strategy_id=intent.strategy_id,
-                slot=slot,
+                slot=self._resolve_buy_alarm_slot(intent),
             )
         return decision
 
@@ -221,10 +212,28 @@ class IntentService:
                 intent_id=intent.intent_id,
                 intent_type="sell",
                 strategy_id=intent.sell_strategy_id,
-                slot=self._repo.fetch_slot(intent.slot_id),
+                slot=self._resolve_sell_alarm_slot(intent),
             )
         return decision
 
+    def _resolve_buy_alarm_slot(self, intent: BuyIntent) -> Any:
+        try:
+            if intent.slot_id is not None:
+                return self._repo.fetch_slot(intent.slot_id)
+            if intent.portfolio_id:
+                return self._repo.find_slot_by_portfolio(
+                    self._instance_key, intent.portfolio_id
+                )
+        except Exception:  # noqa: BLE001 - optional alarm context lookup
+            return None
+        return None
+
+    def _resolve_sell_alarm_slot(self, intent: SellIntent) -> Any:
+        try:
+            return self._repo.fetch_slot(intent.slot_id)
+        except Exception:  # noqa: BLE001 - optional alarm context lookup
+            return None
+
     def _publish_reconcile_warned_rejection_alarm(
         self,
         *,