fix: route video agent to comfyui and ignore openspec

src/web/pages/ComfyUI.tsx

@@ -4,10 +4,11 @@ import { getSessionToken } from '../authSession.js';
 
 export default function ComfyUI() {
   const [isDark, setIsDark] = React.useState(true);
+  const [iframeSrc, setIframeSrc] = React.useState('');
+  const [starting, setStarting] = React.useState(true);
   const location = useLocation();
   const audience = location.pathname.startsWith('/user/') ? 'user' : 'admin';
   const token = getSessionToken(audience, localStorage);
-  const iframeSrc = token ? `/comfy/?token=${encodeURIComponent(token)}` : '';
 
   React.useEffect(() => {
     const el = document.documentElement;
@@ -18,6 +19,49 @@ export default function ComfyUI() {
     return () => mo.disconnect();
   }, []);
 
+  React.useEffect(() => {
+    let cancelled = false;
+    const encodedToken = token ? encodeURIComponent(token) : '';
+
+    if (!token) {
+      setIframeSrc('');
+      setStarting(false);
+      return () => {
+        cancelled = true;
+      };
+    }
+
+    setStarting(true);
+    setIframeSrc('');
+
+    const start = async () => {
+      try {
+        const response = await fetch('/api/video-agent/start', {
+          method: 'POST',
+          headers: { Authorization: `Bearer ${token}` },
+        });
+        if (!cancelled && response.ok) {
+          setIframeSrc(`/comfy/?token=${encodedToken}`);
+          return;
+        }
+      } catch {
+        // Fall through to the legacy embedded ComfyUI proxy.
+      }
+
+      if (!cancelled) {
+        setIframeSrc('/api/comfyui/proxy/');
+      }
+    };
+
+    void start().finally(() => {
+      if (!cancelled) setStarting(false);
+    });
+
+    return () => {
+      cancelled = true;
+    };
+  }, [token]);
+
   return (
     <div
       style={{
@@ -47,7 +91,7 @@ export default function ComfyUI() {
           color: 'var(--color-text-muted)',
           fontSize: 14,
         }}>
-          登录状态已过期，请重新登录。
+          {starting ? '正在启动 ComfyUI...' : '登录状态已过期，请重新登录。'}
         </div>
       )}
     </div>