Add /split route — Open WebUI iframe + 참고자료 polling layout

app.py

@@ -92,17 +92,13 @@ def _attach_kpaa_routes() -> None:
     """Mount KPAA OpenAI-compatible /v1 routes onto demo's FastAPI.
 
     Called AFTER demo.launch() — demo.app is the live Gradio FastAPI by then.
-    We use include_router for clean route attachment.
     """
     from kpaa.server import create_app
     kpaa_app = create_app()
 
-    # FastAPI's `include_router` re-registers each route on the parent. Simpler:
-    # iterate kpaa_app.routes and append to demo.app.routes.
     n_added = 0
     skipped = 0
     for route in kpaa_app.routes:
-        # Skip routes that would conflict with Gradio (e.g., '/').
         path = getattr(route, "path", None)
         if path in ("/", None):
             skipped += 1
@@ -112,6 +108,32 @@ def _attach_kpaa_routes() -> None:
     print(f"[kpaa-backend] attached {n_added} KPAA routes (skipped {skipped})", flush=True)
 
 
+def _attach_split_view() -> None:
+    """`/split` endpoint — Open WebUI iframe + 참고자료 polling 분할 레이아웃.
+
+    KPAA local 의 _SPLIT_HTML 을 그대로 재사용하되 iframe src 만 UI Space URL 로
+    교체. /api/last-references polling 은 같은 origin (backend Space) 에서 받음.
+    """
+    from fastapi.responses import HTMLResponse
+
+    from kpaa.server import _SPLIT_HTML
+
+    # Local 은 localhost:8080 (Open WebUI), HF 에서는 UI Space URL.
+    UI_SPACE_URL = "https://scvcoder-korean-privacy-ai-assistant.hf.space"
+    hf_html = _SPLIT_HTML.replace(
+        'src="http://localhost:8080/"',
+        f'src="{UI_SPACE_URL}"',
+    )
+
+    @demo.app.get("/split", response_class=HTMLResponse)
+    async def split_view() -> str:
+        return hf_html
+
+    # 사용자 편의: 루트 접속 시 /split 으로 리다이렉트할까 했지만 Gradio 가
+    # / 를 점유하므로 /split 으로 직접 접속하도록 안내.
+    print(f"[kpaa-backend] /split route added (UI iframe -> {UI_SPACE_URL})", flush=True)
+
+
 if __name__ == "__main__":
     # Launch Gradio in a non-blocking way so we can patch demo.app afterwards.
     demo.queue()
@@ -123,9 +145,10 @@ if __name__ == "__main__":
         prevent_thread_lock=True,
     )
 
-    # demo.app is now a live Starlette/FastAPI app — attach KPAA routes.
+    # demo.app is now a live Starlette/FastAPI app — attach KPAA routes + split view.
     _attach_kpaa_routes()
-    print("[kpaa-backend] ready: Gradio at /, KPAA OpenAI routes at /v1/...", flush=True)
+    _attach_split_view()
+    print("[kpaa-backend] ready: Gradio at /, /v1/... API, /split (Open WebUI + 참고자료)", flush=True)
 
     # Block forever (Gradio runs on background thread).
     while True: