fix: preserve agent debug conversation context

ai_knowledge_base_v2/apps/admin-web/src/components/AgentManagementView.vue

@@ -275,6 +275,10 @@ async function debugAgent() {
   if (!agentForm.question.trim()) return ElMessage.error("请输入调试问题");
   if (!promptContent.value.trim()) return ElMessage.error("主提示词不能为空");
   const question = agentForm.question.trim();
+  const conversationHistory = agentPreviewMessages.value
+    .slice(1)
+    .filter((message) => ["user", "assistant"].includes(message.role) && message.content.trim() && !message.streaming)
+    .map((message) => ({ role: message.role, content: message.content.trim() }));
   agentPreviewMessages.value.push({ role: "user", content: question });
   agentPreviewMessages.value.push({ role: "assistant", content: "", streaming: true });
   const assistantIndex = agentPreviewMessages.value.length - 1;
@@ -291,6 +295,7 @@ async function debugAgent() {
         modelId: agentForm.modelId,
         knowledgeIds: agentForm.knowledgeIds,
         question,
+        history: conversationHistory,
         temperature: agentForm.temperature,
         topP: agentForm.topP,
         topK: agentForm.topK,