Migrate AI runtime to SDK and hardcode Zhipu coding endpoint

app/layout.tsx

@@ -3,7 +3,7 @@ import type { Metadata } from 'next';
 
 export const metadata: Metadata = {
   title: 'Fiscal Clone',
-  description: 'Futuristic fiscal intelligence terminal with durable tasks and OpenClaw integration.'
+  description: 'Futuristic fiscal intelligence terminal with durable tasks and AI SDK integration.'
 };
 
 export default function RootLayout({ children }: { children: React.ReactNode }) {

app/page.tsx

@@ -184,7 +184,7 @@ export default function CommandCenterPage() {
           )}
         </Panel>
 
-        <Panel title="AI Brief" subtitle="Latest portfolio insight from OpenClaw/ZeroClaw" className="xl:col-span-2">
+        <Panel title="AI Brief" subtitle="Latest portfolio insight from AI SDK (Zhipu)" className="xl:col-span-2">
           {loading ? (
             <p className="text-sm text-[color:var(--terminal-muted)]">Loading intelligence output...</p>
           ) : state.latestInsight ? (