Fix Runtime Error: Remove theme argument from Blocks

src/ui/layout.py

@@ -157,7 +157,8 @@ def create_ui():
     │              └────────────────────────────────────────┘ │
     └─────────────────────────────────────────────────────────┘
     """
-    with gr.Blocks(theme=gr.themes.Default()) as demo:
+    # Theme argument removed to fix Runtime Error on HF Spaces (Gradio 5.x regression?)
+    with gr.Blocks() as demo:
         # Inject CSS directly via HTML
         gr.HTML(f"<style>{NEO_CSS}</style>", visible=False)