fix: remove trigger word, always auto-submit on recording stop

- Remove trigger phrase logic (answer me, etc.)
- Wire both .stop_recording() and .change() for reliability
- Answer generates automatically when user stops talking
- No manual button click needed for voice questions

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

app.py

@@ -542,7 +542,7 @@ with gr.Blocks(title="MomsVoice", css=css_code) as demo:
                     with gr.Group(visible=False) as qa_input_group:
                         question_audio = gr.Audio(
                             sources=["microphone"], type="filepath",
-                            label="🎤 Ask your question, then say 'answer me' to get the answer",
+                            label="🎤 Ask your question — answer generates automatically when you stop",
                             show_label=True, streaming=False,
                             elem_id="qa_audio_input",
                         )
@@ -1019,10 +1019,7 @@ with gr.Blocks(title="MomsVoice", css=css_code) as demo:
         }"""
     )
 
-    # 9. Submit question
-    # Trigger phrase: user says "answer me" to signal end of question
-    _TRIGGER_PHRASES = ["answer me", "answer this", "tell me"]
-
+    # 9. Submit question — always auto-submits when recording stops
     def handle_question_submit(question_txt, question_audio_path, paragraphs, slider_val, profile_id):
         q_txt = (question_txt or "").strip()
         has_audio = question_audio_path is not None and question_audio_path != ""
@@ -1046,27 +1043,6 @@ with gr.Blocks(title="MomsVoice", css=css_code) as demo:
             except Exception as e:
                 q_text = f"(transcription failed: {e})"
 
-        # Check for trigger phrase — if not found in voice input, wait for it
-        q_lower = q_text.lower().strip()
-        has_trigger = any(trigger in q_lower for trigger in _TRIGGER_PHRASES)
-
-        if has_audio and not q_txt and not has_trigger:
-            # No trigger phrase detected — show transcription and wait
-            safe_q = html.escape(q_text)
-            waiting_html = f"""
-                <div style="padding: 12px; background: rgba(245,132,31,0.1); border: 1px solid rgba(245,132,31,0.3); border-radius: 10px; font-size: 12px; color: #f5841f;">
-                    🎤 Heard: &ldquo;<em>{safe_q}</em>&rdquo;<br>
-                    <span style="font-size: 11px; color: #94a3b8;">Say <strong>&ldquo;answer me&rdquo;</strong> to get the answer, or keep recording.</span>
-                </div>
-            """
-            return gr.HTML(value=waiting_html, visible=True), gr.Audio(visible=False)
-
-        # Strip trigger phrase from the question text
-        for trigger in _TRIGGER_PHRASES:
-            q_text = re.sub(rf'\b{trigger}\b[.!?,\s]*', '', q_text, flags=re.IGNORECASE).strip()
-        if not q_text:
-            q_text = "What happens next in the story?"
-
         # Step 10: Generate grounded answer from story context using Qwen
         current_idx = int(slider_val) if slider_val else 0
         try:
@@ -1124,17 +1100,23 @@ with gr.Blocks(title="MomsVoice", css=css_code) as demo:
         outputs=[answer_display, answer_audio]
     )
 
-    # Auto-submit when voice recording completes
-    # .stop_recording may fire before audio value is committed in Gradio 5.35
-    # .change fires after the value is set — use it with a guard to avoid triggering on clear
-    def auto_submit_on_audio_change(audio_path, question_txt, paragraphs, slider_val, profile_id):
-        """Auto-submit only when a new recording is available (not on clear)."""
+    # Auto-submit when voice recording completes — use BOTH events for reliability
+    def auto_submit_on_audio(audio_path, question_txt, paragraphs, slider_val, profile_id):
+        """Auto-submit when a recording is available."""
         if not audio_path:
             return gr.update(), gr.update()
         return handle_question_submit(question_txt, audio_path, paragraphs, slider_val, profile_id)
 
+    # .stop_recording fires when user clicks stop or silence detected
+    question_audio.stop_recording(
+        auto_submit_on_audio,
+        inputs=[question_audio, question_text, paragraphs_state, timeline_slider, voice_profile_state],
+        outputs=[answer_display, answer_audio]
+    )
+
+    # .change fires after audio value is committed — backup in case stop_recording misses
     question_audio.change(
-        auto_submit_on_audio_change,
+        auto_submit_on_audio,
         inputs=[question_audio, question_text, paragraphs_state, timeline_slider, voice_profile_state],
         outputs=[answer_display, answer_audio]
     )