Update severity handling and adjust autoplay setting for clinician voice in demo

app.py

@@ -484,7 +484,7 @@ def process_turn(
         return (
             chat_history,
             prev_scores or {},
-            prev_meta,
+            prev_meta.get("Severity", ""),
             finished,
             turns,
             None,
@@ -630,7 +630,7 @@ def create_demo():
                     severity_label = gr.Label(label="Severity")
                     threshold = gr.Slider(0.5, 1.0, value=CONFIDENCE_THRESHOLD_DEFAULT, step=0.05, label="Confidence Threshold (stop when min ≥ τ)")
                     tts_enable = gr.Checkbox(label="Speak clinician responses (TTS)", value=USE_TTS_DEFAULT)
-                    tts_audio = gr.Audio(label="Clinician voice", interactive=False, autoplay=True)
+                    tts_audio = gr.Audio(label="Clinician voice", interactive=False, autoplay=False)
                     model_id_tb = gr.Textbox(value=current_model_id, label="Chat Model ID", info="e.g., google/gemma-2-2b-it or google/medgemma-4b-it")
                     with gr.Row():
                         apply_model_btn = gr.Button("Apply model (no restart)")