Pin Gradio/Pydantic and fix launch config

apps/web/app.py

@@ -154,4 +154,5 @@ with gr.Blocks(title="RAG Assistant") as demo:
             ingest_btn.click(admin_ingest, inputs=[file_upload], outputs=[status_box])
 
 if __name__ == "__main__":
-    demo.queue().launch()
+    # specific server_name needed for Docker/Spaces
+    demo.queue().launch(server_name="0.0.0.0", ssr_mode=False)

requirements.txt

@@ -15,3 +15,6 @@ pandas
 networkx<3.5
 # Add other necessary root deps if missed, but this covers 99% of RAG needs.
 # Allowing pip to resolve versions avoids Py3.10 vs 3.11 conflicts.
+# Explicitly pinning to avoid Spaces/Gradio conflicts
+gradio==4.44.1
+pydantic>=2.0,<3.0