Merge pull request #2575 from apple-ouyang/fix/issue-2571-subagent-safeguards

fix(delegate-task): add subagent turn limit and model routing transparency

src/tools/delegate-task/sync-task.ts

@@ -149,9 +149,23 @@ export async function executeSyncTask(
 
       const duration = formatDuration(startTime)
 
+      // 检测模型路由是否与父 session 不同，给用户可见的提示
+      const actualModelStr = categoryModel
+        ? `${categoryModel.providerID}/${categoryModel.modelID}`
+        : undefined
+      const parentModelStr = parentContext.model
+        ? `${parentContext.model.providerID}/${parentContext.model.modelID}`
+        : undefined
+      const modelRoutingNote =
+        actualModelStr && parentModelStr && actualModelStr !== parentModelStr
+          ? `\n⚠️  Model routing: parent used ${parentModelStr}, this subagent used ${actualModelStr} (via category: ${args.category ?? "unknown"})`
+          : actualModelStr
+            ? `\nModel: ${actualModelStr}${args.category ? ` (category: ${args.category})` : ""}`
+            : ""
+
       return `Task completed in ${duration}.
 
-Agent: ${agentToUse}${args.category ? ` (category: ${args.category})` : ""}
+Agent: ${agentToUse}${args.category ? ` (category: ${args.category})` : ""}${modelRoutingNote}
 
 ---