fix: disable SSR (fixes /_app/immutable 404 + /video 308 redirect)

app.py

@@ -570,5 +570,9 @@ if __name__ == "__main__":
 
     _GradioApp.create_app = staticmethod(_patched_create_app)
 
-    demo.queue(default_concurrency_limit=16).launch()
+    # Disable SSR — it caused major issues:
+    # 1. /_app/immutable/* bundles 404'd on fresh browsers (old FastAPI mount)
+    # 2. /video/... got 308-redirected to / by the SSR router
+    # Classic CSR is simpler and rock-solid for our use-case.
+    demo.queue(default_concurrency_limit=16).launch(ssr_mode=False)