diff --git a/frontend/src/components/aiops/AIOpsAssistant.tsx b/frontend/src/components/aiops/AIOpsAssistant.tsx
index 7ec563b..891666d 100644
--- a/frontend/src/components/aiops/AIOpsAssistant.tsx
+++ b/frontend/src/components/aiops/AIOpsAssistant.tsx
@@ -1,4 +1,5 @@
 import { useState, useRef, useEffect } from 'react';
+import { useNavigate } from 'react-router-dom';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
@@ -145,6 +146,7 @@ function fmtTime(iso: string): string {
 }
 
 export function AIOpsAssistant() {
+  const navigate = useNavigate();
   const [messages, setMessages] = useState<Message[]>([]);
   const [input, setInput] = useState('');
   const [isLoading, setIsLoading] = useState(false);
@@ -381,20 +383,12 @@ export function AIOpsAssistant() {
           </div>
         </div>
         <div className="flex items-center gap-3">
-          {configReady ? (
+          {configReady && (
             <Badge variant="outline" className="border-emerald-500/30 text-emerald-400 bg-emerald-500/10">
               <CheckCircle2 className="h-3 w-3 mr-1" />
               {config.model}
             </Badge>
-          ) : (
-            <Badge variant="outline" className="border-amber-500/30 text-amber-400 bg-amber-500/10">
-              未配置
-            </Badge>
           )}
-          <Button variant="outline" className="border-slate-700 text-slate-300" onClick={() => setIsConfigOpen(true)}>
-            <Settings className="h-4 w-4 mr-2" />
-            模型配置
-          </Button>
         </div>
       </div>
 
@@ -483,7 +477,12 @@ export function AIOpsAssistant() {
                   <MessageSquare className="h-10 w-10 mb-3 opacity-30" />
                   <p>{configReady ? '暂无对话记录，输入问题开始与 AI 助手对话' : 'AI 助手尚未配置大模型'}</p>
                   {!configReady && (
-                    <Button variant="outline" size="sm" className="mt-4 border-slate-600 text-slate-300" onClick={() => setIsConfigOpen(true)}>
+                    <Button
+                      variant="outline"
+                      size="sm"
+                      className="mt-4 border-slate-700 text-slate-300 hover:text-purple-400"
+                      onClick={() => navigate('/ai-llm-config')}
+                    >
                       <Settings className="h-4 w-4 mr-1" />
                       前往配置
                     </Button>
diff --git a/frontend/src/components/aiops/AgentCLI.tsx b/frontend/src/components/aiops/AgentCLI.tsx
index 97fef3f..c799b0a 100644
--- a/frontend/src/components/aiops/AgentCLI.tsx
+++ b/frontend/src/components/aiops/AgentCLI.tsx
@@ -2,7 +2,6 @@
 // 关联主机后，用自然语言描述任务，AI 通过 SSH 工具自主排障/部署，循环重试直到解决。
 // 通过 WebSocket 实时展示思考、执行的命令、输出与结果；高危命令弹框确认。
 import { useState, useRef, useEffect, useCallback } from 'react';
-import { useNavigate } from 'react-router-dom';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
@@ -12,8 +11,9 @@ import {
 } from '@/components/ui/select';
 import { useConfirm } from '@/components/ui/confirm-dialog';
 import { serverApi, buildAgentCliWsUrl } from '@/api';
+import { toast } from 'sonner';
 import {
-  Send, Square, Terminal, Settings, ChevronDown, ChevronRight,
+  Send, Square, Terminal, ChevronDown, ChevronRight,
   Shield, Brain, Cpu, Database, Loader2, Bot, AlertTriangle, CheckCircle2, Lightbulb, Server,
 } from 'lucide-react';
 
@@ -57,7 +57,6 @@ function riskClass(risk?: string): string {
 }
 
 export default function AgentCLI() {
-  const navigate = useNavigate();
   const confirm = useConfirm();
 
   const [servers, setServers] = useState<{ id: number; hostname: string; ip: string }[]>([]);
@@ -67,7 +66,7 @@ export default function AgentCLI() {
   const [running, setRunning] = useState(false);
   const [round, setRound] = useState(0);
   const [tokens, setTokens] = useState(0);
-  const [tipsOpen, setTipsOpen] = useState(true);
+  const [tipsOpen, setTipsOpen] = useState(false);
   const [connected, setConnected] = useState(false);
 
   const wsRef = useRef<WebSocket | null>(null);
@@ -95,6 +94,7 @@ export default function AgentCLI() {
     wsRef.current = ws;
     ws.onopen = () => setConnected(true);
     ws.onclose = () => { setConnected(false); setRunning(false); };
+    ws.onerror = () => { setConnected(false); };
     ws.onmessage = (e) => {
       try { handleEvent(JSON.parse(e.data)); } catch { /* 忽略非 JSON */ }
     };
@@ -176,7 +176,13 @@ export default function AgentCLI() {
   // 发送任务 // Logan.Li
   const send = () => {
     const q = input.trim();
-    if (!q || running || !wsRef.current || wsRef.current.readyState !== WebSocket.OPEN) return;
+    if (!q) return;
+    if (!serverId) { toast.error('请先选择目标主机'); return; }
+    if (!wsRef.current || wsRef.current.readyState !== WebSocket.OPEN) {
+      toast.error('连接未就绪，请检查大模型配置或刷新页面重试');
+      return;
+    }
+    if (running) return;
     push({ kind: 'user', content: q });
     wsRef.current.send(JSON.stringify({ type: 'start', query: q }));
     setInput('');
@@ -219,9 +225,6 @@ export default function AgentCLI() {
             </Badge>
           )}
           <div className="flex-1" />
-          <Button variant="outline" size="sm" className="border-slate-700 text-slate-300" onClick={() => navigate('/ai-llm-config')}>
-            <Settings className="w-4 h-4 mr-1" /> 大模型设置
-          </Button>
         </CardContent>
       </Card>
 
@@ -232,7 +235,6 @@ export default function AgentCLI() {
             {tipsOpen ? <ChevronDown className="w-4 h-4" /> : <ChevronRight className="w-4 h-4" />}
             <Lightbulb className="w-4 h-4 text-yellow-400" />
             <span className="font-medium">核心能力与设计思路</span>
-            <span className="text-slate-500 text-xs">— Agent CLI 由四大模块构成，参考 opsxcli AI Agent 移植</span>
           </div>
         </CardHeader>
         {tipsOpen && (
@@ -254,9 +256,23 @@ export default function AgentCLI() {
       <Card className="flex-1 min-h-0 bg-slate-900/40 border-slate-800 flex flex-col">
         <div ref={scrollRef} className="flex-1 min-h-0 overflow-y-auto p-4 space-y-3">
           {items.length === 0 && (
-            <div className="h-full flex flex-col items-center justify-center text-slate-500 gap-2">
+            <div className="h-full flex flex-col items-center justify-center text-slate-500 gap-3">
               <Terminal className="w-10 h-10 opacity-40" />
-              <div className="text-sm">{serverId ? '描述你要执行的任务，例如「检查磁盘使用率并清理大文件」' : '请先选择一台目标主机'}</div>
+              {!serverId ? (
+                <>
+                  <div className="text-sm">请先选择一台目标主机</div>
+                  {servers.length === 0 && (
+                    <div className="text-xs text-slate-600">暂无主机，请先前往「资产管理」添加服务器</div>
+                  )}
+                </>
+              ) : !connected ? (
+                <>
+                  <Loader2 className="w-6 h-6 animate-spin text-blue-400" />
+                  <div className="text-sm">正在连接主机...</div>
+                </>
+              ) : (
+                <div className="text-sm">描述你要执行的任务，例如「检查磁盘使用率并清理大文件」</div>
+              )}
             </div>
           )}
           {items.map((it) => (
@@ -270,7 +286,6 @@ export default function AgentCLI() {
             onChange={(e) => setInput(e.target.value)}
             onKeyDown={(e) => { if (e.key === 'Enter' && !e.shiftKey) { e.preventDefault(); send(); } }}
             placeholder={serverId ? '输入任务描述，回车发送（Shift+回车换行）' : '请先选择目标主机'}
-            disabled={!connected}
             rows={1}
             className="flex-1 resize-none bg-slate-800 border border-slate-700 rounded-md px-3 py-2 text-sm text-slate-200 placeholder:text-slate-600 focus:outline-none focus:ring-1 focus:ring-blue-500 max-h-32"
           />
@@ -279,7 +294,7 @@ export default function AgentCLI() {
               <Square className="w-4 h-4 mr-1" /> 停止
             </Button>
           ) : (
-            <Button onClick={send} disabled={!connected || !input.trim()} className="bg-blue-600 hover:bg-blue-700">
+            <Button onClick={send} disabled={!input.trim()} className="bg-blue-600 hover:bg-blue-700">
               <Send className="w-4 h-4 mr-1" /> 执行
             </Button>
           )}
diff --git a/frontend/src/components/monitor/log-center/LogCenter.tsx b/frontend/src/components/monitor/log-center/LogCenter.tsx
index 9048c8b..d91b739 100644
--- a/frontend/src/components/monitor/log-center/LogCenter.tsx
+++ b/frontend/src/components/monitor/log-center/LogCenter.tsx
@@ -4,7 +4,7 @@ import { Navigate, useParams } from 'react-router-dom';
 import { ScrollText } from 'lucide-react';
 import { LogQueryProvider } from './LogQueryContext';
 import { UnifiedQueryPanel } from './UnifiedQueryPanel';
-import { LogLibraryPage } from './LogLibraryPage';
+import { LogDatasourcePage } from './LogDatasourcePage';
 import { LogAlertsPanel } from './LogAlertsPanel';
 import type { LogEngine } from './types-v3';
 
@@ -42,7 +42,7 @@ export default function LogCenter() {
         {(tab === 'loki' || tab === 'es') && meta.engine && (
           <UnifiedQueryPanel engine={meta.engine} onRuleCreated={() => setAlertReloadKey(k => k + 1)} />
         )}
-        {tab === 'datasources' && <LogLibraryPage />}
+        {tab === 'datasources' && <LogDatasourcePage />}
         {tab === 'alerts' && <LogAlertsPanel key={alertReloadKey} />}
       </div>
     </LogQueryProvider>
diff --git a/frontend/src/components/monitor/log-center/logLibraryTypes.ts b/frontend/src/components/monitor/log-center/logLibraryTypes.ts
index 692be72..75ebb87 100644
--- a/frontend/src/components/monitor/log-center/logLibraryTypes.ts
+++ b/frontend/src/components/monitor/log-center/logLibraryTypes.ts
@@ -53,19 +53,26 @@ export const STATUS_CONFIG: Record<string, StatusConfigItem> = {
   untested: { color: 'var(--dg-text-muted)', label: '未测试', dot: '#94a3b8' },
 };
 
-/** Mock 数据源 */
+/** Mock 数据源（仅演示用 — demo-loki / demo-es 各一个） */
 export const MOCK_DATASOURCES: LogDatasource[] = [
-  { id: 1, engine: 'loki', name: 'prod-loki', url: 'http://loki.prod.local:3100', status: 'connected', description: '生产环境 Loki', isDefault: true, auth: null },
-  { id: 2, engine: 'loki', name: 'dev-loki', url: 'http://loki.dev.local:3100', status: 'connected', description: '开发环境 Loki', isDefault: false, auth: null },
-  { id: 3, engine: 'elasticsearch', name: 'prod-es', url: 'http://es.prod.local:9200', status: 'connected', description: '生产环境 ES', isDefault: true, auth: null },
-  { id: 4, engine: 'elasticsearch', name: 'dev-es', url: 'http://es.dev.local:9200', status: 'error', description: '开发环境 ES', isDefault: false, auth: null },
+  { id: 1, engine: 'loki', name: 'demo-loki', url: '', status: 'connected', description: 'Loki 模拟数据', isDefault: true, auth: null },
+  { id: 2, engine: 'elasticsearch', name: 'demo-es', url: '', status: 'connected', description: 'ES 模拟数据', isDefault: true, auth: null },
 ];
 
-/** 从 localStorage 加载数据源 */
+/** 从 localStorage 加载数据源（迁移旧数据自动清理） */
 export function loadDatasources(): LogDatasource[] {
   try {
     const raw = localStorage.getItem(STORAGE_KEY);
-    if (raw) return JSON.parse(raw);
+    if (raw) {
+      const list: LogDatasource[] = JSON.parse(raw);
+      // 版本迁移：旧数据（含 prod-loki / dev-loki 等）强制重置为 demo
+      const oldNames = list.map((d) => d.name);
+      if (oldNames.includes('prod-loki') || oldNames.includes('dev-es') || oldNames.includes('prod-es') || oldNames.includes('dev-loki')) {
+        localStorage.removeItem(STORAGE_KEY);
+        return [...MOCK_DATASOURCES];
+      }
+      return list;
+    }
   } catch { /* ignore */ }
   return [...MOCK_DATASOURCES];
 }