Fix diagram display: use Textbox instead of Code

- gr.Code doesn't support plain text in Gradio 4.44.0
- Changed to gr.Textbox with lines=20, max_lines=40 for ASCII diagrams
- Fixes ValueError: Language text not supported

app.py

@@ -300,7 +300,7 @@ def build_ui():
                                     setup_output = gr.Markdown(label="Deployment Guide")
                                 
                                 with gr.Tab("📊 Diagram"):
-                                    diagram_output = gr.Code(label="Network Diagram", language="text")
+                                    diagram_output = gr.Textbox(label="Network Diagram", lines=20, max_lines=40)
                 
                 with gr.Tab("Build Network"):
                     gr.Markdown("### 🌱 Build Network from Description\nDescribe your network needs in plain English - Overgrowth builds and configures it automatically.")
@@ -350,7 +350,7 @@ def build_ui():
                             )
                             get_topology_btn = gr.Button("Get Topology")
                             topology_summary = gr.Markdown(label="Topology Summary")
-                            topology_diagram = gr.Code(label="Network Diagram (ASCII)", language="text")
+                            topology_diagram = gr.Textbox(label="Network Diagram (ASCII)", lines=20, max_lines=40)
                             topology_details = gr.Code(label="Topology JSON", language="json")
                         
                         with gr.Column():