fix: Move theme parameter to launch() method for Gradio 6

- Remove theme from gr.Blocks() (not supported)
- Add theme configuration before demo.launch()
- Pass theme parameter to demo.launch() (Gradio 6 requirement)
- Ocean-inspired theme: blue/cyan colors with Inter font
- Fixes: TypeError: BlockContext.__init__() got an unexpected keyword argument 'theme'

app.py

@@ -83,21 +83,8 @@ except ValueError:
 def create_gradio_ui():
     """Create Gradio UI for testing MCP tools"""
 
-    # Theme configuration (Ocean-inspired)
-    theme = gr.themes.Base(
-        primary_hue="blue",
-        secondary_hue="cyan",
-        neutral_hue="slate",
-        font=gr.themes.GoogleFont("Inter"),
-    ).set(
-        body_background_fill="*neutral_50",
-        body_background_fill_dark="*neutral_900",
-        button_primary_background_fill="*primary_500",
-        button_primary_background_fill_hover="*primary_600",
-        button_primary_text_color="white",
-    )
-
-    with gr.Blocks(title="TraceMind MCP Server", theme=theme) as demo:
+    # Note: In Gradio 6, theme is passed to launch(), not Blocks()
+    with gr.Blocks(title="TraceMind MCP Server") as demo:
         gr.Markdown("""
         # 🤖 TraceMind MCP Server