feat: add Piper TTS UI components and remove duplicate Dia TTS UI

app.py

@@ -432,7 +432,19 @@ with gr.Blocks(css=custom_css, title="🎙️ TTS Model Gallery", theme=gr.theme
             piper_language_selection = gr.Radio(
                 choices=["English", "Chinese"],
                 value="English",
-                
+                label="Language"
+            )
+            piper_voice_selection = gr.Dropdown(
+                choices=list(voices_by_lang["English"].keys()),
+                value=list(voices_by_lang["English"].keys())[0] if voices_by_lang["English"] else None,
+                label="Voice"
+            )
+            piper_generate_btn = gr.Button("Generate Speech")
+        
+        with gr.Column():
+            piper_audio_output = gr.Audio(label="Generated Speech", type="filepath")
+            piper_status = gr.Textbox(label="Status", interactive=False)
+
     # Dia TTS UI
     dia_model_info = gr.HTML(create_model_card("nari-labs/Dia-1.6B"))
     
@@ -446,18 +458,6 @@ with gr.Blocks(css=custom_css, title="🎙️ TTS Model Gallery", theme=gr.theme
         
         with gr.Column():
             dia_audio_output = gr.Audio(label="Generated Speech", type="filepath")
-                label="Language"
-            )
-            piper_voice_selection = gr.Dropdown(
-                choices=list(voices_by_lang["English"].keys()),
-                value=list(voices_by_lang["English"].keys())[0] if voices_by_lang["English"] else None,
-                label="Voice"
-            )
-            piper_generate_btn = gr.Button("Generate Speech")
-        
-        with gr.Column():
-            piper_audio_output = gr.Audio(label="Generated Speech", type="filepath")
-            piper_status = gr.Textbox(label="Status", interactive=False)
     
     # Faster Whisper section
     whisper_model_info = gr.HTML(create_model_card("SYSTRAN/faster-whisper"))