feat: add MindSearch admin controls

src/admin/AdminNav.tsx

@@ -29,6 +29,7 @@ const NAV_SECTIONS: NavSection[] = [
       { to: '/wechat', label: '服务号' },
       { to: '/mindspace', label: 'MindSpace 配置' },
       { to: '/memory-v2', label: 'Memory V2' },
+      { to: '/mindsearch', label: 'MindSearch' },
       { to: '/skill-runtime', label: 'Skill Runtime' },
       { to: '/system-tests', label: '系统测试验证' },
       { to: '/capabilities', label: '能力' },

src/admin/pages/MindSearchPage.tsx

@@ -0,0 +1,68 @@
+import { useEffect, useState } from 'react';
+import { getMindSearchConfig, updateMindSearchConfig } from '../../api/client';
+import type { MindSearchConfig } from '../../types';
+
+const initial: MindSearchConfig = {
+  enabled: false,
+  mode: 'off',
+  providers: { searxng: false, github: false, reader: false },
+  settings: { searxngEndpoint: '', maxResults: 10, timeoutMs: 8000, readerMaxChars: 12000 },
+};
+
+export function MindSearchPage() {
+  const [config, setConfig] = useState(initial);
+  const [meta, setMeta] = useState<{ source?: string; updatedAt?: number | null; updatedBy?: string | null }>({});
+  const [message, setMessage] = useState('加载配置中…');
+
+  useEffect(() => {
+    getMindSearchConfig()
+      .then((result) => {
+        setConfig({ ...initial, ...result.config, settings: { ...initial.settings, ...result.config.settings } });
+        setMeta(result);
+        setMessage('');
+      })
+      .catch((error) => setMessage(error instanceof Error ? error.message : '配置加载失败'));
+  }, []);
+
+  const save = async () => {
+    setMessage('保存中…');
+    try {
+      const result = await updateMindSearchConfig(config);
+      setConfig({ ...initial, ...result.config, settings: { ...initial.settings, ...result.config.settings } });
+      setMeta(result);
+      setMessage('已保存到数据库；新会话生效，旧会话不受影响');
+    } catch (error) {
+      setMessage(error instanceof Error ? error.message : '保存失败');
+    }
+  };
+
+  const toggleProvider = (key: keyof MindSearchConfig['providers']) =>
+    setConfig((current) => ({ ...current, providers: { ...current.providers, [key]: !current.providers[key] } }));
+  const updateSetting = (key: keyof MindSearchConfig['settings'], value: string | number) =>
+    setConfig((current) => ({ ...current, settings: { ...current.settings, [key]: value } }));
+
+  return (
+    <section className="admin-page">
+      <div className="admin-page-header"><div><h1>MindSearch</h1><p>可插拔外部搜索增强。关闭时完全保持原有搜索、记忆和上下文链路。</p></div></div>
+      <div className="admin-card">
+        <h2>总开关与模式</h2>
+        <label><input type="checkbox" checked={config.enabled} onChange={(event) => setConfig({ ...config, enabled: event.target.checked, mode: event.target.checked ? (config.mode === 'off' ? 'shadow' : config.mode) : 'off' })} /> 启用 MindSearch</label>
+        <label>运行模式 <select value={config.mode} onChange={(event) => setConfig({ ...config, mode: event.target.value as MindSearchConfig['mode'] })}><option value="off">关闭</option><option value="shadow">Shadow（只记录，不注入）</option><option value="assist">Assist（补充工具）</option></select></label>
+        <h2>Provider</h2>
+        <fieldset><legend>可用 Provider</legend>
+          <label><input type="checkbox" checked={config.providers.searxng} onChange={() => toggleProvider('searxng')} /> SearXNG Web/News</label>
+          <label><input type="checkbox" checked={config.providers.github} onChange={() => toggleProvider('github')} /> GitHub Code（Token 通过环境变量配置，不在页面回显）</label>
+          <label><input type="checkbox" checked={config.providers.reader} onChange={() => toggleProvider('reader')} /> Reader（阻止 localhost/内网地址）</label>
+        </fieldset>
+        <h2>运行参数</h2>
+        <label>SearXNG 地址 <input value={config.settings.searxngEndpoint} placeholder="http://127.0.0.1:8080/search" onChange={(event) => updateSetting('searxngEndpoint', event.target.value)} /></label>
+        <label>最大结果数 <input type="number" min={1} max={20} value={config.settings.maxResults} onChange={(event) => updateSetting('maxResults', Number(event.target.value))} /></label>
+        <label>Provider 超时（毫秒） <input type="number" min={1000} max={30000} value={config.settings.timeoutMs} onChange={(event) => updateSetting('timeoutMs', Number(event.target.value))} /></label>
+        <label>Reader 最大字符数 <input type="number" min={1000} max={50000} value={config.settings.readerMaxChars} onChange={(event) => updateSetting('readerMaxChars', Number(event.target.value))} /></label>
+        <button type="button" onClick={save}>保存配置</button>
+        {message && <p role="status">{message}</p>}
+        <p>配置来源：{meta.source === 'admin' ? '数据库' : '环境变量默认值'}；最后更新：{meta.updatedAt ? new Date(meta.updatedAt).toLocaleString() : '尚未保存'}{meta.updatedBy ? `；操作人：${meta.updatedBy}` : ''}</p>
+      </div>
+    </section>
+  );
+}