Fix SSE route dependency and align architecture docs

frontend/src/components/layout/Tabs.tsx

@@ -1,7 +1,8 @@
 import React from 'react';
 import { useTheme, useApp } from '../../contexts';
+import type { TabId } from '../../contexts';
 
-const tabs = [
+const tabs: Array<{ id: TabId; label: string }> = [
   { id: 'docs', label: '文档管理' },
   { id: 'compliance', label: '合规分析' },
   { id: 'status', label: '系统状态' },
@@ -24,7 +25,7 @@ export const Tabs: React.FC = () => {
       {tabs.map((tab) => (
         <button
           key={tab.id}
-          onClick={() => setActiveTab(tab.id as any)}
+          onClick={() => setActiveTab(tab.id)}
           style={{
             height: 56,
             padding: '0 32px',
@@ -44,4 +45,4 @@ export const Tabs: React.FC = () => {
       ))}
     </nav>
   );
-};
+};