feat: AIOps智能助手对话历史持久化(按用户隔离,刷新后仍可见)

frontend/src/components/aiops/AIOpsAssistant.tsx

@@ -23,7 +23,7 @@ import {
 } from '@/components/ui/select';
 import { Switch } from '@/components/ui/switch';
 import { toast } from 'sonner';
-import { aiApi, type LLMConfigData } from '@/services/api';
+import { aiApi, type LLMConfigData, type ChatHistoryItem } from '@/services/api';
 import {
   Bot,
   Send,
@@ -110,7 +110,28 @@ export function AIOpsAssistant() {
       setConfigReady(false);
     }
   };
-  useEffect(() => { loadConfig(); }, []);
+
+  // 加载历史对话（按用户隔离，刷新后仍可见） // Logan.Li
+  const loadHistory = async () => {
+    try {
+      const res = await aiApi.getHistory();
+      const items: ChatHistoryItem[] = (res as any)?.list || [];
+      setMessages(
+        items.map((m) => ({
+          id: String(m.id),
+          role: m.role,
+          content: m.content,
+          timestamp: m.created_at,
+        })),
+      );
+    } catch {
+      // 历史加载失败不阻塞主流程
+    }
+  };
+  useEffect(() => {
+    loadConfig();
+    loadHistory();
+  }, []);
 
   // 切换提供商时自动填充默认 endpoint + 模型 // Logan.Li
   const handleProviderChange = (provider: string) => {
@@ -189,10 +210,16 @@ export function AIOpsAssistant() {
     }
   };
 
-  // 新对话 // Logan.Li
-  const handleNewChat = () => {
+  // 新对话（清空本地 + 后端持久化历史） // Logan.Li
+  const handleNewChat = async () => {
+    try {
+      await aiApi.clearHistory();
+    } catch {
+      // 清除失败不阻塞本地清空
+    }
     setMessages([]);
     setInput('');
+    toast.success('已开始新对话');
   };
 
   const currentProvider = LLM_PROVIDERS.find((p) => p.id === config.provider);