Fix UI layout: replace gr.Group(visible=False) with gr.State for regen plumbing

app.py

@@ -1767,10 +1767,9 @@ with gr.Blocks(title="Generate Audio for Video", css=_SLOT_CSS, js=_GLOBAL_JS) a
                     (taro_slot_grps, taro_slot_vids,
                      taro_slot_waves) = _make_output_slots("taro")
 
-            # Hidden regen plumbing — outside Row so no layout impact
-            with gr.Group(visible=False):
-                taro_regen_seg   = gr.Textbox(value="0", elem_id="taro_regen_seg")
-                taro_regen_state = gr.Textbox(value="", elem_id="taro_regen_state")
+            # Hidden regen plumbing — gr.State has zero DOM footprint
+            taro_regen_seg   = gr.State(value="0")
+            taro_regen_state = gr.State(value="")
 
             for trigger in [taro_video, taro_steps, taro_cf_dur]:
                 trigger.change(
@@ -1875,10 +1874,9 @@ with gr.Blocks(title="Generate Audio for Video", css=_SLOT_CSS, js=_GLOBAL_JS) a
                     (mma_slot_grps, mma_slot_vids,
                      mma_slot_waves) = _make_output_slots("mma")
 
-            # Hidden regen plumbing — outside Row so no layout impact
-            with gr.Group(visible=False):
-                mma_regen_seg   = gr.Textbox(value="0", elem_id="mma_regen_seg")
-                mma_regen_state = gr.Textbox(value="", elem_id="mma_regen_state")
+            # Hidden regen plumbing — gr.State has zero DOM footprint
+            mma_regen_seg   = gr.State(value="0")
+            mma_regen_state = gr.State(value="")
 
             mma_samples.change(
                 fn=_update_slot_visibility,
@@ -1967,10 +1965,9 @@ with gr.Blocks(title="Generate Audio for Video", css=_SLOT_CSS, js=_GLOBAL_JS) a
                     (hf_slot_grps, hf_slot_vids,
                      hf_slot_waves) = _make_output_slots("hf")
 
-            # Hidden regen plumbing — outside Row so no layout impact
-            with gr.Group(visible=False):
-                hf_regen_seg    = gr.Textbox(value="0", elem_id="hf_regen_seg")
-                hf_regen_state  = gr.Textbox(value="", elem_id="hf_regen_state")
+            # Hidden regen plumbing — gr.State has zero DOM footprint
+            hf_regen_seg    = gr.State(value="0")
+            hf_regen_state  = gr.State(value="")
 
             hf_samples.change(
                 fn=_update_slot_visibility,