fix UI bug

app.py

@@ -14,6 +14,8 @@ from fastapi import FastAPI
 from gradio.oauth import OAUTH_CLIENT_SECRET
 from starlette.middleware.sessions import SessionMiddleware
 
+from fastapi.responses import RedirectResponse
+
 from src.about import (
     INTRODUCTION_TEXT,
     TITLE,
@@ -1380,8 +1382,17 @@ def orcid_debug() -> dict[str, str]:
 
 api_app.add_api_route("/orcid/start", oauth_start, methods=["GET"])
 api_app.add_api_route("/orcid/callback", oauth_callback, methods=["GET"])
+
+# Public homepage: redirect to the Gradio interface.
+@api_app.get("/", include_in_schema=False)
+def homepage():
+    return RedirectResponse(url="/ui/", status_code=307)
+
+
 demo.queue(default_concurrency_limit=8)
-app = gr.mount_gradio_app(api_app, demo, path="/")
+
+# Mount at a non-root path to avoid Gradio 5.43.1 SSR path stripping.
+app = gr.mount_gradio_app(api_app, demo, path="/ui", ssr_mode=True)
 
 if __name__ == "__main__":
     server_port = 7860