Mark truncated batch queries as partial failures (#1472 #1616)

Author: Widthdom

src/CodeIndex/Mcp/McpToolHandlers.cs

@@ -2452,7 +2452,7 @@ void AppendRateLimitedSlot(int requestIndex, string? toolName, JsonNode? toolArg
             ["total_count"] = queries.Count,
             ["success_count"] = successCount,
             ["failure_count"] = failureCount,
-            ["partial_failure"] = failureCount > 0,
+            ["partial_failure"] = failureCount > 0 || cascadeStartedAtIndex.HasValue,
             ["failure_scope"] = GetBatchFailureScope(queries.Count, successCount, failureCount, cascadeStartedAtIndex),
             ["cascade_started_at_index"] = cascadeStartedAtIndex,
             ["metadata"] = new JsonObject
@@ -2539,7 +2539,7 @@ private int EstimateBatchResponseBytes(JsonNode? id, string summary, int submitt
             ["total_count"] = submittedCount,
             ["success_count"] = successCount,
             ["failure_count"] = failureCount,
-            ["partial_failure"] = failureCount > 0,
+            ["partial_failure"] = failureCount > 0 || cascadeStartedAtIndex.HasValue,
             ["failure_scope"] = failureScope,
             ["cascade_started_at_index"] = cascadeStartedAtIndex,
             ["metadata"] = new JsonObject

tests/CodeIndex.Tests/McpServerTests.cs

@@ -6468,6 +6468,7 @@ public void ToolsCall_BatchQuery_TruncatesAggregateResponse_Issue1416()
             Assert.Equal(0, structured["metadata"]!["errors"]!.GetValue<int>());
             Assert.Equal("cascading", structured["failure_scope"]!.GetValue<string>());
             Assert.NotNull(structured["cascade_started_at_index"]);
+            Assert.True(structured["partial_failure"]!.GetValue<bool>());
 
             var truncatedQueries = structured["truncated_queries"]!.AsArray();
             Assert.NotEmpty(truncatedQueries);