removed gradio from reqs as hf isntalls it in container by itself

requirements.txt

@@ -17,12 +17,9 @@ fastapi==0.137.1
 filelock==3.29.4
 fonttools==4.63.0
 fsspec==2026.4.0
-gradio==6.18.0
-gradio_client==2.5.0
 graphviz==0.21
 groovy==0.1.2
 h11==0.16.0
-hf-gradio==0.4.1
 hf-xet==1.5.1
 httpcore==1.0.9
 httpx==0.28.1

server.py

@@ -883,5 +883,5 @@ if __name__ == "__main__":
         server_name=host,
         server_port=port,
         show_error=True,
-        ssr_mode=False,
+        # ponytail: ssr_mode=False broke asset serving in Gradio 6.x (404 on .js/.css)
     )