fix(kitchen-ops-bff): report kitchen transition success

docs/api/kitchen-ops-workflows.md

@@ -33,4 +33,5 @@ This BFF exposes kitchen board, claim or release, transition, and priority workf
 - Transition requests now forward `ContextId` to `kitchen-service` so kitchen actions land in the correct shared restaurant lifecycle context.
 - Board reads now rely on the lifecycle-driven kitchen ticket materialization in `kitchen-service`, which means newly accepted restaurant orders can appear without a stack reset.
 - The BFF keeps temporary edge-state compatibility for existing web clients by translating `Cooking|Ready|Served` to the canonical kitchen-service states `Preparing|ReadyForPickup|Delivered`.
+- Transition success at the edge is now sourced from the upstream `Applied` flag so operators see truthful mutation outcomes.
 - Correlation IDs are preserved through Thalos session checks and kitchen-service calls.

src/Kitchen.Ops.Bff.Application/Adapters/KitchenWorkflowServiceClient.cs

@@ -89,13 +89,15 @@ public sealed class KitchenWorkflowServiceClient(HttpClient httpClient) : IKitch
             throw new InvalidOperationException("Kitchen service returned an empty transition payload.");
         }
 
+        // kitchen-service reports success as `Applied`; the public edge contract exposes
+        // the same outcome as `Transitioned` for the web clients.
         return new TransitionKitchenWorkItemResponse(
             payload.OrderId,
             payload.TicketId,
             MapEdgeState(payload.PreviousState),
             MapEdgeState(payload.CurrentState),
-            payload.Transitioned,
-            payload.Error);
+            payload.Applied,
+            payload.RejectionReason);
     }
 
     public async Task<SetKitchenOrderPriorityResponse> SetOrderPriorityAsync(SetKitchenOrderPriorityRequest request, CancellationToken cancellationToken)
@@ -186,8 +188,8 @@ public sealed class KitchenWorkflowServiceClient(HttpClient httpClient) : IKitch
         string TicketId,
         string PreviousState,
         string CurrentState,
-        bool Transitioned,
-        string? Error);
+        bool Applied,
+        string? RejectionReason);
 
     private sealed record UpdateKitchenPriorityPayload(
         string ContextId,

tests/Kitchen.Ops.Bff.Application.UnitTests/KitchenWorkflowServiceClientTests.cs

@@ -69,8 +69,8 @@ public sealed class KitchenWorkflowServiceClientTests
               "ticketId": "KT-1001",
               "previousState": "Queued",
               "currentState": "Preparing",
-              "transitioned": true,
-              "error": null
+              "applied": true,
+              "rejectionReason": null
             }
             """));